[PATCH v6 00/17] xfsprogs: Delayed Ready Attributes

[PATCH v6 00/17] xfsprogs: Delayed Ready Attributes

[Allison Collins]

This set applies the corresponding changes for delayed ready attributes to
xfsprogs. I will pick up the reviews from the kernel side series and mirror
them here.  

Thanks all!
Allison

Allison Collins (17):
  xfsprogs: Remove all strlen in all xfs_attr_* functions for attr
    names.
  xfsprogs: Replace attribute parameters with struct xfs_name
  xfsprogs: Embed struct xfs_name in xfs_da_args
  xfsprogs: Add xfs_has_attr and subroutines
  xfsprogs: Factor out new helper functions xfs_attr_rmtval_set
  xfsprogs: Factor out trans handling in xfs_attr3_leaf_flipflags
  xfsprogs: Factor out xfs_attr_leaf_addname helper
  xfsprogs: Refactor xfs_attr_try_sf_addname
  xfsprogs: Factor out trans roll from xfs_attr3_leaf_setflag
  xfsprogs: Factor out xfs_attr_rmtval_invalidate
  xfsprogs: Factor out trans roll in xfs_attr3_leaf_clearflag
  xfsprogs: Check for -ENOATTR or -EEXIST
  xfsprogs: Add helper function xfs_attr_init_unmapstate
  xfsprogs: Add helper function xfs_attr_rmtval_unmap
  xfsprogs: Simplify xfs_attr_set_args
  xfsprogs: Add delay ready attr remove routines
  xfsprogs: Add delay ready attr set routines

 db/attrset.c             |  11 +-
 libxfs/libxfs_priv.h     |  11 +-
 libxfs/xfs_attr.c        | 859 ++++++++++++++++++++++++++++++++---------------
 libxfs/xfs_attr.h        |   9 +-
 libxfs/xfs_attr_leaf.c   | 222 ++++++------
 libxfs/xfs_attr_leaf.h   |   3 +
 libxfs/xfs_attr_remote.c | 265 +++++++++++----
 libxfs/xfs_attr_remote.h |   7 +-
 libxfs/xfs_da_btree.c    |   6 +-
 libxfs/xfs_da_btree.h    |  41 ++-
 libxfs/xfs_dir2.c        |  18 +-
 libxfs/xfs_dir2_block.c  |   6 +-
 libxfs/xfs_dir2_leaf.c   |   6 +-
 libxfs/xfs_dir2_node.c   |   8 +-
 libxfs/xfs_dir2_sf.c     |  30 +-
 libxfs/xfs_types.c       |  11 +
 libxfs/xfs_types.h       |   1 +
 17 files changed, 1033 insertions(+), 481 deletions(-)

-- 
2.7.4

[PATCH v6 01/17] xfsprogs: Remove all strlen in all xfs_attr_* functions for attr names.

[Allison Collins]

This helps to pre-simplify the extra handling of the null terminator in
delayed operations which use memcpy rather than strlen.  Later
when we introduce parent pointers, attribute names will become binary,
so strlen will not work at all.  Removing uses of strlen now will
help reduce complexities later

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 db/attrset.c         |  4 ++--
 libxfs/libxfs_priv.h |  9 +++++----
 libxfs/xfs_attr.c    | 12 ++++++++----
 libxfs/xfs_attr.h    |  8 +++++---
 4 files changed, 20 insertions(+), 13 deletions(-)

diff --git a/db/attrset.c b/db/attrset.c
index 5697250..5c0ec6e9 100644
--- a/db/attrset.c
+++ b/db/attrset.c
@@ -146,7 +146,7 @@ attr_set_f(
 		goto out;
 	}
 
-	if (libxfs_attr_set(ip, (unsigned char *)name,
+	if (libxfs_attr_set(ip, (unsigned char *)name, strlen(name),
 				(unsigned char *)value, valuelen, flags)) {
 		dbprintf(_("failed to set attr %s on inode %llu\n"),
 			name, (unsigned long long)iocur_top->ino);
@@ -222,7 +222,7 @@ attr_remove_f(
 		goto out;
 	}
 
-	if (libxfs_attr_remove(ip, (unsigned char *)name, flags)) {
+	if (libxfs_attr_remove(ip, (unsigned char *)name, strlen(name), flags)) {
 		dbprintf(_("failed to remove attr %s from inode %llu\n"),
 			name, (unsigned long long)iocur_top->ino);
 		goto out;
diff --git a/libxfs/libxfs_priv.h b/libxfs/libxfs_priv.h
index d944efc0..c25c5de 100644
--- a/libxfs/libxfs_priv.h
+++ b/libxfs/libxfs_priv.h
@@ -610,11 +610,12 @@ static inline int test_and_set_bit(int nr, volatile unsigned long *addr)
 int xfs_inode_hasattr(struct xfs_inode *ip);
 int xfs_attr_get_ilocked(struct xfs_inode *ip, struct xfs_da_args *args);
 int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name,
-                unsigned char **value, int *valuelenp, int flags);
+		 size_t namelen, unsigned char **value, int *valuelenp,
+		 int flags);
 int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,
-                 unsigned char *value, int valuelen, int flags);
-int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags);
-
+		 size_t namelen, unsigned char *value, int valuelen, int flags);
+int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name,
+		    size_t namelen, int flags);
 int xfs_rtbuf_get(struct xfs_mount *mp, struct xfs_trans *tp,
 		  xfs_rtblock_t block, int issum, struct xfs_buf **bpp);
 int xfs_rtcheck_range(struct xfs_mount *mp, struct xfs_trans *tp,
diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index ada1b5f..925094d 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -61,6 +61,7 @@ xfs_attr_args_init(
 	struct xfs_da_args	*args,
 	struct xfs_inode	*dp,
 	const unsigned char	*name,
+	size_t			namelen,
 	int			flags)
 {
 
@@ -73,7 +74,7 @@ xfs_attr_args_init(
 	args->dp = dp;
 	args->flags = flags;
 	args->name = name;
-	args->namelen = strlen((const char *)name);
+	args->namelen = namelen;
 	if (args->namelen >= MAXNAMELEN)
 		return -EFAULT;		/* match IRIX behaviour */
 
@@ -138,6 +139,7 @@ int
 xfs_attr_get(
 	struct xfs_inode	*ip,
 	const unsigned char	*name,
+	size_t			namelen,
 	unsigned char		**value,
 	int			*valuelenp,
 	int			flags)
@@ -153,7 +155,7 @@ xfs_attr_get(
 	if (XFS_FORCED_SHUTDOWN(ip->i_mount))
 		return -EIO;
 
-	error = xfs_attr_args_init(&args, ip, name, flags);
+	error = xfs_attr_args_init(&args, ip, name, namelen, flags);
 	if (error)
 		return error;
 
@@ -337,6 +339,7 @@ int
 xfs_attr_set(
 	struct xfs_inode	*dp,
 	const unsigned char	*name,
+	size_t			namelen,
 	unsigned char		*value,
 	int			valuelen,
 	int			flags)
@@ -352,7 +355,7 @@ xfs_attr_set(
 	if (XFS_FORCED_SHUTDOWN(dp->i_mount))
 		return -EIO;
 
-	error = xfs_attr_args_init(&args, dp, name, flags);
+	error = xfs_attr_args_init(&args, dp, name, namelen, flags);
 	if (error)
 		return error;
 
@@ -441,6 +444,7 @@ int
 xfs_attr_remove(
 	struct xfs_inode	*dp,
 	const unsigned char	*name,
+	size_t			namelen,
 	int			flags)
 {
 	struct xfs_mount	*mp = dp->i_mount;
@@ -452,7 +456,7 @@ xfs_attr_remove(
 	if (XFS_FORCED_SHUTDOWN(dp->i_mount))
 		return -EIO;
 
-	error = xfs_attr_args_init(&args, dp, name, flags);
+	error = xfs_attr_args_init(&args, dp, name, namelen, flags);
 	if (error)
 		return error;
 
diff --git a/libxfs/xfs_attr.h b/libxfs/xfs_attr.h
index 94badfa..106a2f2 100644
--- a/libxfs/xfs_attr.h
+++ b/libxfs/xfs_attr.h
@@ -145,11 +145,13 @@ int xfs_attr_list_int(struct xfs_attr_list_context *);
 int xfs_inode_hasattr(struct xfs_inode *ip);
 int xfs_attr_get_ilocked(struct xfs_inode *ip, struct xfs_da_args *args);
 int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name,
-		 unsigned char **value, int *valuelenp, int flags);
+		 size_t namelen, unsigned char **value, int *valuelenp,
+		 int flags);
 int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,
-		 unsigned char *value, int valuelen, int flags);
+		 size_t namelen, unsigned char *value, int valuelen, int flags);
 int xfs_attr_set_args(struct xfs_da_args *args);
-int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags);
+int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name,
+		    size_t namelen, int flags);
 int xfs_attr_remove_args(struct xfs_da_args *args);
 int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize,
 		  int flags, struct attrlist_cursor_kern *cursor);
-- 
2.7.4

[PATCH v6 02/17] xfsprogs: Replace attribute parameters with struct xfs_name

[Allison Collins]

This patch replaces the attribute name and length parameters with a
single struct xfs_name parameter.  This helps to clean up the numbers of
parameters being passed around and pre-simplifies the code some.

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
---
 db/attrset.c         | 11 ++++++++---
 libxfs/libxfs_priv.h | 12 +++++-------
 libxfs/xfs_attr.c    | 22 +++++++++-------------
 libxfs/xfs_attr.h    | 12 +++++-------
 libxfs/xfs_types.c   | 11 +++++++++++
 libxfs/xfs_types.h   |  1 +
 6 files changed, 39 insertions(+), 30 deletions(-)

diff --git a/db/attrset.c b/db/attrset.c
index 5c0ec6e9..4da85cb 100644
--- a/db/attrset.c
+++ b/db/attrset.c
@@ -16,6 +16,7 @@
 #include "field.h"
 #include "inode.h"
 #include "malloc.h"
+#include "xfs_types.h"
 
 static int		attr_set_f(int argc, char **argv);
 static int		attr_remove_f(int argc, char **argv);
@@ -68,6 +69,7 @@ attr_set_f(
 {
 	xfs_inode_t	*ip = NULL;
 	char		*name, *value, *sp;
+	struct xfs_name	xname;
 	int		c, valuelen = 0, flags = 0;
 
 	if (cur_typ == NULL) {
@@ -146,8 +148,9 @@ attr_set_f(
 		goto out;
 	}
 
-	if (libxfs_attr_set(ip, (unsigned char *)name, strlen(name),
-				(unsigned char *)value, valuelen, flags)) {
+	xfs_name_init(&xname, name);
+	if (libxfs_attr_set(ip, &xname, (unsigned char *)value, valuelen,
+			    flags)) {
 		dbprintf(_("failed to set attr %s on inode %llu\n"),
 			name, (unsigned long long)iocur_top->ino);
 		goto out;
@@ -172,6 +175,7 @@ attr_remove_f(
 {
 	xfs_inode_t	*ip = NULL;
 	char		*name;
+	struct xfs_name	xname;
 	int		c, flags = 0;
 
 	if (cur_typ == NULL) {
@@ -222,7 +226,8 @@ attr_remove_f(
 		goto out;
 	}
 
-	if (libxfs_attr_remove(ip, (unsigned char *)name, strlen(name), flags)) {
+	xfs_name_init(&xname, name);
+	if (libxfs_attr_remove(ip, &xname, flags)) {
 		dbprintf(_("failed to remove attr %s from inode %llu\n"),
 			name, (unsigned long long)iocur_top->ino);
 		goto out;
diff --git a/libxfs/libxfs_priv.h b/libxfs/libxfs_priv.h
index c25c5de..f8637e8c 100644
--- a/libxfs/libxfs_priv.h
+++ b/libxfs/libxfs_priv.h
@@ -609,13 +609,11 @@ static inline int test_and_set_bit(int nr, volatile unsigned long *addr)
 /* Keep static checkers quiet about nonstatic functions by exporting */
 int xfs_inode_hasattr(struct xfs_inode *ip);
 int xfs_attr_get_ilocked(struct xfs_inode *ip, struct xfs_da_args *args);
-int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name,
-		 size_t namelen, unsigned char **value, int *valuelenp,
-		 int flags);
-int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,
-		 size_t namelen, unsigned char *value, int valuelen, int flags);
-int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name,
-		    size_t namelen, int flags);
+int xfs_attr_get(struct xfs_inode *ip, struct xfs_name *name,
+		 unsigned char **value, int *valuelenp, int flags);
+int xfs_attr_set(struct xfs_inode *dp, struct xfs_name *name,
+		 unsigned char *value, int valuelen, int flags);
+int xfs_attr_remove(struct xfs_inode *dp, struct xfs_name *name, int flags);
 int xfs_rtbuf_get(struct xfs_mount *mp, struct xfs_trans *tp,
 		  xfs_rtblock_t block, int issum, struct xfs_buf **bpp);
 int xfs_rtcheck_range(struct xfs_mount *mp, struct xfs_trans *tp,
diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index 925094d..6e1f3a1 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -60,8 +60,7 @@ STATIC int
 xfs_attr_args_init(
 	struct xfs_da_args	*args,
 	struct xfs_inode	*dp,
-	const unsigned char	*name,
-	size_t			namelen,
+	struct xfs_name		*name,
 	int			flags)
 {
 
@@ -73,8 +72,8 @@ xfs_attr_args_init(
 	args->whichfork = XFS_ATTR_FORK;
 	args->dp = dp;
 	args->flags = flags;
-	args->name = name;
-	args->namelen = namelen;
+	args->name = name->name;
+	args->namelen = name->len;
 	if (args->namelen >= MAXNAMELEN)
 		return -EFAULT;		/* match IRIX behaviour */
 
@@ -138,8 +137,7 @@ xfs_attr_get_ilocked(
 int
 xfs_attr_get(
 	struct xfs_inode	*ip,
-	const unsigned char	*name,
-	size_t			namelen,
+	struct xfs_name		*name,
 	unsigned char		**value,
 	int			*valuelenp,
 	int			flags)
@@ -155,7 +153,7 @@ xfs_attr_get(
 	if (XFS_FORCED_SHUTDOWN(ip->i_mount))
 		return -EIO;
 
-	error = xfs_attr_args_init(&args, ip, name, namelen, flags);
+	error = xfs_attr_args_init(&args, ip, name, flags);
 	if (error)
 		return error;
 
@@ -338,8 +336,7 @@ xfs_attr_remove_args(
 int
 xfs_attr_set(
 	struct xfs_inode	*dp,
-	const unsigned char	*name,
-	size_t			namelen,
+	struct xfs_name		*name,
 	unsigned char		*value,
 	int			valuelen,
 	int			flags)
@@ -355,7 +352,7 @@ xfs_attr_set(
 	if (XFS_FORCED_SHUTDOWN(dp->i_mount))
 		return -EIO;
 
-	error = xfs_attr_args_init(&args, dp, name, namelen, flags);
+	error = xfs_attr_args_init(&args, dp, name, flags);
 	if (error)
 		return error;
 
@@ -443,8 +440,7 @@ out_trans_cancel:
 int
 xfs_attr_remove(
 	struct xfs_inode	*dp,
-	const unsigned char	*name,
-	size_t			namelen,
+	struct xfs_name		*name,
 	int			flags)
 {
 	struct xfs_mount	*mp = dp->i_mount;
@@ -456,7 +452,7 @@ xfs_attr_remove(
 	if (XFS_FORCED_SHUTDOWN(dp->i_mount))
 		return -EIO;
 
-	error = xfs_attr_args_init(&args, dp, name, namelen, flags);
+	error = xfs_attr_args_init(&args, dp, name, flags);
 	if (error)
 		return error;
 
diff --git a/libxfs/xfs_attr.h b/libxfs/xfs_attr.h
index 106a2f2..44dd07a 100644
--- a/libxfs/xfs_attr.h
+++ b/libxfs/xfs_attr.h
@@ -144,14 +144,12 @@ int xfs_attr_list_int_ilocked(struct xfs_attr_list_context *);
 int xfs_attr_list_int(struct xfs_attr_list_context *);
 int xfs_inode_hasattr(struct xfs_inode *ip);
 int xfs_attr_get_ilocked(struct xfs_inode *ip, struct xfs_da_args *args);
-int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name,
-		 size_t namelen, unsigned char **value, int *valuelenp,
-		 int flags);
-int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,
-		 size_t namelen, unsigned char *value, int valuelen, int flags);
+int xfs_attr_get(struct xfs_inode *ip, struct xfs_name *name,
+		 unsigned char **value, int *valuelenp, int flags);
+int xfs_attr_set(struct xfs_inode *dp, struct xfs_name *name,
+		 unsigned char *value, int valuelen, int flags);
 int xfs_attr_set_args(struct xfs_da_args *args);
-int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name,
-		    size_t namelen, int flags);
+int xfs_attr_remove(struct xfs_inode *dp, struct xfs_name *name, int flags);
 int xfs_attr_remove_args(struct xfs_da_args *args);
 int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize,
 		  int flags, struct attrlist_cursor_kern *cursor);
diff --git a/libxfs/xfs_types.c b/libxfs/xfs_types.c
index fa11372..363e5050 100644
--- a/libxfs/xfs_types.c
+++ b/libxfs/xfs_types.c
@@ -12,6 +12,17 @@
 #include "xfs_bit.h"
 #include "xfs_mount.h"
 
+/* Initialize a struct xfs_name with a null terminated string name */
+void
+xfs_name_init(
+	struct xfs_name *xname,
+	const char *name)
+{
+	xname->name = (unsigned char *)name;
+	xname->len = strlen(name);
+	xname->type = 0;
+}
+
 /* Find the size of the AG, in blocks. */
 xfs_agblock_t
 xfs_ag_block_count(
diff --git a/libxfs/xfs_types.h b/libxfs/xfs_types.h
index 300b3e9..ecb2c58 100644
--- a/libxfs/xfs_types.h
+++ b/libxfs/xfs_types.h
@@ -182,6 +182,7 @@ enum xfs_ag_resv_type {
  */
 struct xfs_mount;
 
+void xfs_name_init(struct xfs_name *xname, const char *name);
 xfs_agblock_t xfs_ag_block_count(struct xfs_mount *mp, xfs_agnumber_t agno);
 bool xfs_verify_agbno(struct xfs_mount *mp, xfs_agnumber_t agno,
 		xfs_agblock_t agbno);
-- 
2.7.4

[PATCH v6 03/17] xfsprogs: Embed struct xfs_name in xfs_da_args

[Allison Collins]

This patch embeds an xfs_name in xfs_da_args, replacing the name,
namelen, and flags members.  This helps to clean up the xfs_da_args
structure and make it more uniform with the new xfs_name parameter being
passed around.

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
---
 libxfs/xfs_attr.c        |  39 +++++++++--------
 libxfs/xfs_attr_leaf.c   | 106 ++++++++++++++++++++++++-----------------------
 libxfs/xfs_attr_remote.c |   2 +-
 libxfs/xfs_da_btree.c    |   6 ++-
 libxfs/xfs_da_btree.h    |   4 +-
 libxfs/xfs_dir2.c        |  18 ++++----
 libxfs/xfs_dir2_block.c  |   6 +--
 libxfs/xfs_dir2_leaf.c   |   6 +--
 libxfs/xfs_dir2_node.c   |   8 ++--
 libxfs/xfs_dir2_sf.c     |  30 +++++++-------
 10 files changed, 115 insertions(+), 110 deletions(-)

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index 6e1f3a1..4fe27f1 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -71,13 +71,12 @@ xfs_attr_args_init(
 	args->geo = dp->i_mount->m_attr_geo;
 	args->whichfork = XFS_ATTR_FORK;
 	args->dp = dp;
-	args->flags = flags;
-	args->name = name->name;
-	args->namelen = name->len;
-	if (args->namelen >= MAXNAMELEN)
+	memcpy(&args->name, name, sizeof(struct xfs_name));
+	args->name.type = flags;
+	if (args->name.len >= MAXNAMELEN)
 		return -EFAULT;		/* match IRIX behaviour */
 
-	args->hashval = xfs_da_hashname(args->name, args->namelen);
+	args->hashval = xfs_da_hashname(args->name.name, args->name.len);
 	return 0;
 }
 
@@ -235,7 +234,7 @@ xfs_attr_try_sf_addname(
 	 * Commit the shortform mods, and we're done.
 	 * NOTE: this is also the error path (EEXIST, etc).
 	 */
-	if (!error && (args->flags & ATTR_KERNOTIME) == 0)
+	if (!error && (args->name.type & ATTR_KERNOTIME) == 0)
 		xfs_trans_ichgtime(args->trans, dp, XFS_ICHGTIME_CHG);
 
 	if (mp->m_flags & XFS_MOUNT_WSYNC)
@@ -356,6 +355,9 @@ xfs_attr_set(
 	if (error)
 		return error;
 
+	/* Use name now stored in args */
+	name = &args.name;
+
 	args.value = value;
 	args.valuelen = valuelen;
 	args.op_flags = XFS_DA_OP_ADDNAME | XFS_DA_OP_OKNOENT;
@@ -371,7 +373,7 @@ xfs_attr_set(
 	 */
 	if (XFS_IFORK_Q(dp) == 0) {
 		int sf_size = sizeof(xfs_attr_sf_hdr_t) +
-			XFS_ATTR_SF_ENTSIZE_BYNAME(args.namelen, valuelen);
+			XFS_ATTR_SF_ENTSIZE_BYNAME(name->len, valuelen);
 
 		error = xfs_bmap_add_attrfork(dp, sf_size, rsvd);
 		if (error)
@@ -456,6 +458,9 @@ xfs_attr_remove(
 	if (error)
 		return error;
 
+	/* Use name now stored in args */
+	name = &args.name;
+
 	/*
 	 * we have no control over the attribute names that userspace passes us
 	 * to remove, so we have to allow the name lookup prior to attribute
@@ -531,10 +536,10 @@ xfs_attr_shortform_addname(xfs_da_args_t *args)
 	trace_xfs_attr_sf_addname(args);
 
 	retval = xfs_attr_shortform_lookup(args);
-	if ((args->flags & ATTR_REPLACE) && (retval == -ENOATTR)) {
+	if ((args->name.type & ATTR_REPLACE) && (retval == -ENOATTR)) {
 		return retval;
 	} else if (retval == -EEXIST) {
-		if (args->flags & ATTR_CREATE)
+		if (args->name.type & ATTR_CREATE)
 			return retval;
 		retval = xfs_attr_shortform_remove(args);
 		if (retval)
@@ -544,15 +549,15 @@ xfs_attr_shortform_addname(xfs_da_args_t *args)
 		 * that the leaf format add routine won't trip over the attr
 		 * not being around.
 		 */
-		args->flags &= ~ATTR_REPLACE;
+		args->name.type &= ~ATTR_REPLACE;
 	}
 
-	if (args->namelen >= XFS_ATTR_SF_ENTSIZE_MAX ||
+	if (args->name.len >= XFS_ATTR_SF_ENTSIZE_MAX ||
 	    args->valuelen >= XFS_ATTR_SF_ENTSIZE_MAX)
 		return -ENOSPC;
 
 	newsize = XFS_ATTR_SF_TOTSIZE(args->dp);
-	newsize += XFS_ATTR_SF_ENTSIZE_BYNAME(args->namelen, args->valuelen);
+	newsize += XFS_ATTR_SF_ENTSIZE_BYNAME(args->name.len, args->valuelen);
 
 	forkoff = xfs_attr_shortform_bytesfit(args->dp, newsize);
 	if (!forkoff)
@@ -597,11 +602,11 @@ xfs_attr_leaf_addname(
 	 * the given flags produce an error or call for an atomic rename.
 	 */
 	retval = xfs_attr3_leaf_lookup_int(bp, args);
-	if ((args->flags & ATTR_REPLACE) && (retval == -ENOATTR)) {
+	if ((args->name.type & ATTR_REPLACE) && (retval == -ENOATTR)) {
 		xfs_trans_brelse(args->trans, bp);
 		return retval;
 	} else if (retval == -EEXIST) {
-		if (args->flags & ATTR_CREATE) {	/* pure create op */
+		if (args->name.type & ATTR_CREATE) {	/* pure create op */
 			xfs_trans_brelse(args->trans, bp);
 			return retval;
 		}
@@ -871,10 +876,10 @@ restart:
 		goto out;
 	blk = &state->path.blk[ state->path.active-1 ];
 	ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC);
-	if ((args->flags & ATTR_REPLACE) && (retval == -ENOATTR)) {
+	if ((args->name.type & ATTR_REPLACE) && (retval == -ENOATTR)) {
 		goto out;
 	} else if (retval == -EEXIST) {
-		if (args->flags & ATTR_CREATE)
+		if (args->name.type & ATTR_CREATE)
 			goto out;
 
 		trace_xfs_attr_node_replace(args);
@@ -1006,7 +1011,7 @@ restart:
 		 * The INCOMPLETE flag means that we will find the "old"
 		 * attr, not the "new" one.
 		 */
-		args->flags |= XFS_ATTR_INCOMPLETE;
+		args->name.type |= XFS_ATTR_INCOMPLETE;
 		state = xfs_da_state_alloc();
 		state->args = args;
 		state->mp = mp;
diff --git a/libxfs/xfs_attr_leaf.c b/libxfs/xfs_attr_leaf.c
index 0249a0a..1389970 100644
--- a/libxfs/xfs_attr_leaf.c
+++ b/libxfs/xfs_attr_leaf.c
@@ -398,7 +398,7 @@ xfs_attr_copy_value(
 	/*
 	 * No copy if all we have to do is get the length
 	 */
-	if (args->flags & ATTR_KERNOVAL) {
+	if (args->name.type & ATTR_KERNOVAL) {
 		args->valuelen = valuelen;
 		return 0;
 	}
@@ -611,27 +611,27 @@ xfs_attr_shortform_add(xfs_da_args_t *args, int forkoff)
 	sfe = &sf->list[0];
 	for (i = 0; i < sf->hdr.count; sfe = XFS_ATTR_SF_NEXTENTRY(sfe), i++) {
 #ifdef DEBUG
-		if (sfe->namelen != args->namelen)
+		if (sfe->namelen != args->name.len)
 			continue;
-		if (memcmp(args->name, sfe->nameval, args->namelen) != 0)
+		if (memcmp(args->name.name, sfe->nameval, args->name.len) != 0)
 			continue;
-		if (!xfs_attr_namesp_match(args->flags, sfe->flags))
+		if (!xfs_attr_namesp_match(args->name.type, sfe->flags))
 			continue;
 		ASSERT(0);
 #endif
 	}
 
 	offset = (char *)sfe - (char *)sf;
-	size = XFS_ATTR_SF_ENTSIZE_BYNAME(args->namelen, args->valuelen);
+	size = XFS_ATTR_SF_ENTSIZE_BYNAME(args->name.len, args->valuelen);
 	xfs_idata_realloc(dp, size, XFS_ATTR_FORK);
 	sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
 	sfe = (xfs_attr_sf_entry_t *)((char *)sf + offset);
 
-	sfe->namelen = args->namelen;
+	sfe->namelen = args->name.len;
 	sfe->valuelen = args->valuelen;
-	sfe->flags = XFS_ATTR_NSP_ARGS_TO_ONDISK(args->flags);
-	memcpy(sfe->nameval, args->name, args->namelen);
-	memcpy(&sfe->nameval[args->namelen], args->value, args->valuelen);
+	sfe->flags = XFS_ATTR_NSP_ARGS_TO_ONDISK(args->name.type);
+	memcpy(sfe->nameval, args->name.name, args->name.len);
+	memcpy(&sfe->nameval[args->name.len], args->value, args->valuelen);
 	sf->hdr.count++;
 	be16_add_cpu(&sf->hdr.totsize, size);
 	xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_ADATA);
@@ -681,11 +681,11 @@ xfs_attr_shortform_remove(xfs_da_args_t *args)
 	for (i = 0; i < end; sfe = XFS_ATTR_SF_NEXTENTRY(sfe),
 					base += size, i++) {
 		size = XFS_ATTR_SF_ENTSIZE(sfe);
-		if (sfe->namelen != args->namelen)
+		if (sfe->namelen != args->name.len)
 			continue;
-		if (memcmp(sfe->nameval, args->name, args->namelen) != 0)
+		if (memcmp(sfe->nameval, args->name.name, args->name.len) != 0)
 			continue;
-		if (!xfs_attr_namesp_match(args->flags, sfe->flags))
+		if (!xfs_attr_namesp_match(args->name.type, sfe->flags))
 			continue;
 		break;
 	}
@@ -748,11 +748,11 @@ xfs_attr_shortform_lookup(xfs_da_args_t *args)
 	sfe = &sf->list[0];
 	for (i = 0; i < sf->hdr.count;
 				sfe = XFS_ATTR_SF_NEXTENTRY(sfe), i++) {
-		if (sfe->namelen != args->namelen)
+		if (sfe->namelen != args->name.len)
 			continue;
-		if (memcmp(args->name, sfe->nameval, args->namelen) != 0)
+		if (memcmp(args->name.name, sfe->nameval, args->name.len) != 0)
 			continue;
-		if (!xfs_attr_namesp_match(args->flags, sfe->flags))
+		if (!xfs_attr_namesp_match(args->name.type, sfe->flags))
 			continue;
 		return -EEXIST;
 	}
@@ -779,13 +779,13 @@ xfs_attr_shortform_getvalue(
 	sfe = &sf->list[0];
 	for (i = 0; i < sf->hdr.count;
 				sfe = XFS_ATTR_SF_NEXTENTRY(sfe), i++) {
-		if (sfe->namelen != args->namelen)
+		if (sfe->namelen != args->name.len)
 			continue;
-		if (memcmp(args->name, sfe->nameval, args->namelen) != 0)
+		if (memcmp(args->name.name, sfe->nameval, args->name.len) != 0)
 			continue;
-		if (!xfs_attr_namesp_match(args->flags, sfe->flags))
+		if (!xfs_attr_namesp_match(args->name.type, sfe->flags))
 			continue;
-		return xfs_attr_copy_value(args, &sfe->nameval[args->namelen],
+		return xfs_attr_copy_value(args, &sfe->nameval[args->name.len],
 						sfe->valuelen);
 	}
 	return -ENOATTR;
@@ -844,13 +844,13 @@ xfs_attr_shortform_to_leaf(
 
 	sfe = &sf->list[0];
 	for (i = 0; i < sf->hdr.count; i++) {
-		nargs.name = sfe->nameval;
-		nargs.namelen = sfe->namelen;
-		nargs.value = &sfe->nameval[nargs.namelen];
+		nargs.name.name = sfe->nameval;
+		nargs.name.len = sfe->namelen;
+		nargs.value = &sfe->nameval[nargs.name.len];
 		nargs.valuelen = sfe->valuelen;
 		nargs.hashval = xfs_da_hashname(sfe->nameval,
 						sfe->namelen);
-		nargs.flags = XFS_ATTR_NSP_ONDISK_TO_ARGS(sfe->flags);
+		nargs.name.type = XFS_ATTR_NSP_ONDISK_TO_ARGS(sfe->flags);
 		error = xfs_attr3_leaf_lookup_int(bp, &nargs); /* set a->index */
 		ASSERT(error == -ENOATTR);
 		error = xfs_attr3_leaf_add(bp, &nargs);
@@ -1051,12 +1051,12 @@ xfs_attr3_leaf_to_shortform(
 			continue;
 		ASSERT(entry->flags & XFS_ATTR_LOCAL);
 		name_loc = xfs_attr3_leaf_name_local(leaf, i);
-		nargs.name = name_loc->nameval;
-		nargs.namelen = name_loc->namelen;
-		nargs.value = &name_loc->nameval[nargs.namelen];
+		nargs.name.name = name_loc->nameval;
+		nargs.name.len = name_loc->namelen;
+		nargs.value = &name_loc->nameval[nargs.name.len];
 		nargs.valuelen = be16_to_cpu(name_loc->valuelen);
 		nargs.hashval = be32_to_cpu(entry->hashval);
-		nargs.flags = XFS_ATTR_NSP_ONDISK_TO_ARGS(entry->flags);
+		nargs.name.type = XFS_ATTR_NSP_ONDISK_TO_ARGS(entry->flags);
 		xfs_attr_shortform_add(&nargs, forkoff);
 	}
 	error = 0;
@@ -1384,7 +1384,7 @@ xfs_attr3_leaf_add_work(
 				     ichdr->freemap[mapindex].size);
 	entry->hashval = cpu_to_be32(args->hashval);
 	entry->flags = tmp ? XFS_ATTR_LOCAL : 0;
-	entry->flags |= XFS_ATTR_NSP_ARGS_TO_ONDISK(args->flags);
+	entry->flags |= XFS_ATTR_NSP_ARGS_TO_ONDISK(args->name.type);
 	if (args->op_flags & XFS_DA_OP_RENAME) {
 		entry->flags |= XFS_ATTR_INCOMPLETE;
 		if ((args->blkno2 == args->blkno) &&
@@ -1408,15 +1408,16 @@ xfs_attr3_leaf_add_work(
 	 */
 	if (entry->flags & XFS_ATTR_LOCAL) {
 		name_loc = xfs_attr3_leaf_name_local(leaf, args->index);
-		name_loc->namelen = args->namelen;
+		name_loc->namelen = args->name.len;
 		name_loc->valuelen = cpu_to_be16(args->valuelen);
-		memcpy((char *)name_loc->nameval, args->name, args->namelen);
-		memcpy((char *)&name_loc->nameval[args->namelen], args->value,
+		memcpy((char *)name_loc->nameval, args->name.name,
+		       args->name.len);
+		memcpy((char *)&name_loc->nameval[args->name.len], args->value,
 				   be16_to_cpu(name_loc->valuelen));
 	} else {
 		name_rmt = xfs_attr3_leaf_name_remote(leaf, args->index);
-		name_rmt->namelen = args->namelen;
-		memcpy((char *)name_rmt->name, args->name, args->namelen);
+		name_rmt->namelen = args->name.len;
+		memcpy((char *)name_rmt->name, args->name.name, args->name.len);
 		entry->flags |= XFS_ATTR_INCOMPLETE;
 		/* just in case */
 		name_rmt->valuelen = 0;
@@ -2329,29 +2330,31 @@ xfs_attr3_leaf_lookup_int(
 		 * If we are looking for INCOMPLETE entries, show only those.
 		 * If we are looking for complete entries, show only those.
 		 */
-		if ((args->flags & XFS_ATTR_INCOMPLETE) !=
+		if ((args->name.type & XFS_ATTR_INCOMPLETE) !=
 		    (entry->flags & XFS_ATTR_INCOMPLETE)) {
 			continue;
 		}
 		if (entry->flags & XFS_ATTR_LOCAL) {
 			name_loc = xfs_attr3_leaf_name_local(leaf, probe);
-			if (name_loc->namelen != args->namelen)
+			if (name_loc->namelen != args->name.len)
 				continue;
-			if (memcmp(args->name, name_loc->nameval,
-							args->namelen) != 0)
+			if (memcmp(args->name.name, name_loc->nameval,
+							args->name.len) != 0)
 				continue;
-			if (!xfs_attr_namesp_match(args->flags, entry->flags))
+			if (!xfs_attr_namesp_match(args->name.type,
+						   entry->flags))
 				continue;
 			args->index = probe;
 			return -EEXIST;
 		} else {
 			name_rmt = xfs_attr3_leaf_name_remote(leaf, probe);
-			if (name_rmt->namelen != args->namelen)
+			if (name_rmt->namelen != args->name.len)
 				continue;
-			if (memcmp(args->name, name_rmt->name,
-							args->namelen) != 0)
+			if (memcmp(args->name.name, name_rmt->name,
+							args->name.len) != 0)
 				continue;
-			if (!xfs_attr_namesp_match(args->flags, entry->flags))
+			if (!xfs_attr_namesp_match(args->name.type,
+						   entry->flags))
 				continue;
 			args->index = probe;
 			args->rmtvaluelen = be32_to_cpu(name_rmt->valuelen);
@@ -2393,16 +2396,17 @@ xfs_attr3_leaf_getvalue(
 	entry = &xfs_attr3_leaf_entryp(leaf)[args->index];
 	if (entry->flags & XFS_ATTR_LOCAL) {
 		name_loc = xfs_attr3_leaf_name_local(leaf, args->index);
-		ASSERT(name_loc->namelen == args->namelen);
-		ASSERT(memcmp(args->name, name_loc->nameval, args->namelen) == 0);
+		ASSERT(name_loc->namelen == args->name.len);
+		ASSERT(memcmp(args->name.name, name_loc->nameval,
+			      args->name.len) == 0);
 		return xfs_attr_copy_value(args,
-					&name_loc->nameval[args->namelen],
+					&name_loc->nameval[args->name.len],
 					be16_to_cpu(name_loc->valuelen));
 	}
 
 	name_rmt = xfs_attr3_leaf_name_remote(leaf, args->index);
-	ASSERT(name_rmt->namelen == args->namelen);
-	ASSERT(memcmp(args->name, name_rmt->name, args->namelen) == 0);
+	ASSERT(name_rmt->namelen == args->name.len);
+	ASSERT(memcmp(args->name.name, name_rmt->name, args->name.len) == 0);
 	args->rmtvaluelen = be32_to_cpu(name_rmt->valuelen);
 	args->rmtblkno = be32_to_cpu(name_rmt->valueblk);
 	args->rmtblkcnt = xfs_attr3_rmt_blocks(args->dp->i_mount,
@@ -2618,7 +2622,7 @@ xfs_attr_leaf_newentsize(
 {
 	int			size;
 
-	size = xfs_attr_leaf_entsize_local(args->namelen, args->valuelen);
+	size = xfs_attr_leaf_entsize_local(args->name.len, args->valuelen);
 	if (size < xfs_attr_leaf_entsize_local_max(args->geo->blksize)) {
 		if (local)
 			*local = 1;
@@ -2626,7 +2630,7 @@ xfs_attr_leaf_newentsize(
 	}
 	if (local)
 		*local = 0;
-	return xfs_attr_leaf_entsize_remote(args->namelen);
+	return xfs_attr_leaf_entsize_remote(args->name.len);
 }
 
 
@@ -2680,8 +2684,8 @@ xfs_attr3_leaf_clearflag(
 		name = (char *)name_rmt->name;
 	}
 	ASSERT(be32_to_cpu(entry->hashval) == args->hashval);
-	ASSERT(namelen == args->namelen);
-	ASSERT(memcmp(name, args->name, namelen) == 0);
+	ASSERT(namelen == args->name.len);
+	ASSERT(memcmp(name, args->name.name, namelen) == 0);
 #endif /* DEBUG */
 
 	entry->flags &= ~XFS_ATTR_INCOMPLETE;
diff --git a/libxfs/xfs_attr_remote.c b/libxfs/xfs_attr_remote.c
index 7234f86..0cadc82 100644
--- a/libxfs/xfs_attr_remote.c
+++ b/libxfs/xfs_attr_remote.c
@@ -377,7 +377,7 @@ xfs_attr_rmtval_get(
 
 	trace_xfs_attr_rmtval_get(args);
 
-	ASSERT(!(args->flags & ATTR_KERNOVAL));
+	ASSERT(!(args->name.type & ATTR_KERNOVAL));
 	ASSERT(args->rmtvaluelen == args->valuelen);
 
 	valuelen = args->rmtvaluelen;
diff --git a/libxfs/xfs_da_btree.c b/libxfs/xfs_da_btree.c
index e7af446..b731d96 100644
--- a/libxfs/xfs_da_btree.c
+++ b/libxfs/xfs_da_btree.c
@@ -2037,8 +2037,10 @@ xfs_da_compname(
 	const unsigned char *name,
 	int		len)
 {
-	return (args->namelen == len && memcmp(args->name, name, len) == 0) ?
-					XFS_CMP_EXACT : XFS_CMP_DIFFERENT;
+	if (args->name.len == len && !memcmp(args->name.name, name, len))
+		return XFS_CMP_EXACT;
+
+	return XFS_CMP_DIFFERENT;
 }
 
 static xfs_dahash_t
diff --git a/libxfs/xfs_da_btree.h b/libxfs/xfs_da_btree.h
index ae0bbd2..bed4f40 100644
--- a/libxfs/xfs_da_btree.h
+++ b/libxfs/xfs_da_btree.h
@@ -47,12 +47,10 @@ enum xfs_dacmp {
  */
 typedef struct xfs_da_args {
 	struct xfs_da_geometry *geo;	/* da block geometry */
-	const uint8_t		*name;		/* string (maybe not NULL terminated) */
-	int		namelen;	/* length of string (maybe no NULL) */
+	struct xfs_name	name;		/* name, length and argument  flags*/
 	uint8_t		filetype;	/* filetype of inode for directories */
 	uint8_t		*value;		/* set of bytes (maybe contain NULLs) */
 	int		valuelen;	/* length of value */
-	int		flags;		/* argument flags (eg: ATTR_NOCREATE) */
 	xfs_dahash_t	hashval;	/* hash value of name */
 	xfs_ino_t	inumber;	/* input/output inode number */
 	struct xfs_inode *dp;		/* directory inode to manipulate */
diff --git a/libxfs/xfs_dir2.c b/libxfs/xfs_dir2.c
index b3fbc4d..7f4a011 100644
--- a/libxfs/xfs_dir2.c
+++ b/libxfs/xfs_dir2.c
@@ -72,14 +72,14 @@ xfs_ascii_ci_compname(
 	enum xfs_dacmp	result;
 	int		i;
 
-	if (args->namelen != len)
+	if (args->name.len != len)
 		return XFS_CMP_DIFFERENT;
 
 	result = XFS_CMP_EXACT;
 	for (i = 0; i < len; i++) {
-		if (args->name[i] == name[i])
+		if (args->name.name[i] == name[i])
 			continue;
-		if (tolower(args->name[i]) != tolower(name[i]))
+		if (tolower(args->name.name[i]) != tolower(name[i]))
 			return XFS_CMP_DIFFERENT;
 		result = XFS_CMP_CASE;
 	}
@@ -257,8 +257,7 @@ xfs_dir_createname(
 		return -ENOMEM;
 
 	args->geo = dp->i_mount->m_dir_geo;
-	args->name = name->name;
-	args->namelen = name->len;
+	memcpy(&args->name, name, sizeof(struct xfs_name));
 	args->filetype = name->type;
 	args->hashval = dp->i_mount->m_dirnameops->hashname(name);
 	args->inumber = inum;
@@ -353,8 +352,7 @@ xfs_dir_lookup(
 	 */
 	args = kmem_zalloc(sizeof(*args), KM_NOFS);
 	args->geo = dp->i_mount->m_dir_geo;
-	args->name = name->name;
-	args->namelen = name->len;
+	memcpy(&args->name, name, sizeof(struct xfs_name));
 	args->filetype = name->type;
 	args->hashval = dp->i_mount->m_dirnameops->hashname(name);
 	args->dp = dp;
@@ -425,8 +423,7 @@ xfs_dir_removename(
 		return -ENOMEM;
 
 	args->geo = dp->i_mount->m_dir_geo;
-	args->name = name->name;
-	args->namelen = name->len;
+	memcpy(&args->name, name, sizeof(struct xfs_name));
 	args->filetype = name->type;
 	args->hashval = dp->i_mount->m_dirnameops->hashname(name);
 	args->inumber = ino;
@@ -486,8 +483,7 @@ xfs_dir_replace(
 		return -ENOMEM;
 
 	args->geo = dp->i_mount->m_dir_geo;
-	args->name = name->name;
-	args->namelen = name->len;
+	memcpy(&args->name, name, sizeof(struct xfs_name));
 	args->filetype = name->type;
 	args->hashval = dp->i_mount->m_dirnameops->hashname(name);
 	args->inumber = inum;
diff --git a/libxfs/xfs_dir2_block.c b/libxfs/xfs_dir2_block.c
index eea894f..1568c6a 100644
--- a/libxfs/xfs_dir2_block.c
+++ b/libxfs/xfs_dir2_block.c
@@ -352,7 +352,7 @@ xfs_dir2_block_addname(
 	if (error)
 		return error;
 
-	len = dp->d_ops->data_entsize(args->namelen);
+	len = dp->d_ops->data_entsize(args->name.len);
 
 	/*
 	 * Set up pointers to parts of the block.
@@ -536,8 +536,8 @@ xfs_dir2_block_addname(
 	 * Create the new data entry.
 	 */
 	dep->inumber = cpu_to_be64(args->inumber);
-	dep->namelen = args->namelen;
-	memcpy(dep->name, args->name, args->namelen);
+	dep->namelen = args->name.len;
+	memcpy(dep->name, args->name.name, args->name.len);
 	dp->d_ops->data_put_ftype(dep, args->filetype);
 	tagp = dp->d_ops->data_entry_tag_p(dep);
 	*tagp = cpu_to_be16((char *)dep - (char *)hdr);
diff --git a/libxfs/xfs_dir2_leaf.c b/libxfs/xfs_dir2_leaf.c
index ff4a04e..6bf063c 100644
--- a/libxfs/xfs_dir2_leaf.c
+++ b/libxfs/xfs_dir2_leaf.c
@@ -608,7 +608,7 @@ xfs_dir2_leaf_addname(
 	ents = dp->d_ops->leaf_ents_p(leaf);
 	dp->d_ops->leaf_hdr_from_disk(&leafhdr, leaf);
 	bestsp = xfs_dir2_leaf_bests_p(ltp);
-	length = dp->d_ops->data_entsize(args->namelen);
+	length = dp->d_ops->data_entsize(args->name.len);
 
 	/*
 	 * See if there are any entries with the same hash value
@@ -811,8 +811,8 @@ xfs_dir2_leaf_addname(
 	 */
 	dep = (xfs_dir2_data_entry_t *)dup;
 	dep->inumber = cpu_to_be64(args->inumber);
-	dep->namelen = args->namelen;
-	memcpy(dep->name, args->name, dep->namelen);
+	dep->namelen = args->name.len;
+	memcpy(dep->name, args->name.name, dep->namelen);
 	dp->d_ops->data_put_ftype(dep, args->filetype);
 	tagp = dp->d_ops->data_entry_tag_p(dep);
 	*tagp = cpu_to_be16((char *)dep - (char *)hdr);
diff --git a/libxfs/xfs_dir2_node.c b/libxfs/xfs_dir2_node.c
index d3dea3f..ef73584 100644
--- a/libxfs/xfs_dir2_node.c
+++ b/libxfs/xfs_dir2_node.c
@@ -601,7 +601,7 @@ xfs_dir2_leafn_lookup_for_addname(
 		ASSERT(free->hdr.magic == cpu_to_be32(XFS_DIR2_FREE_MAGIC) ||
 		       free->hdr.magic == cpu_to_be32(XFS_DIR3_FREE_MAGIC));
 	}
-	length = dp->d_ops->data_entsize(args->namelen);
+	length = dp->d_ops->data_entsize(args->name.len);
 	/*
 	 * Loop over leaf entries with the right hash value.
 	 */
@@ -1866,7 +1866,7 @@ xfs_dir2_node_addname_int(
 	__be16			*tagp;		/* data entry tag pointer */
 	__be16			*bests;
 
-	length = dp->d_ops->data_entsize(args->namelen);
+	length = dp->d_ops->data_entsize(args->name.len);
 	error = xfs_dir2_node_find_freeblk(args, fblk, &dbno, &fbp, &findex,
 					   length);
 	if (error)
@@ -1921,8 +1921,8 @@ xfs_dir2_node_addname_int(
 	/* Fill in the new entry and log it. */
 	dep = (xfs_dir2_data_entry_t *)dup;
 	dep->inumber = cpu_to_be64(args->inumber);
-	dep->namelen = args->namelen;
-	memcpy(dep->name, args->name, dep->namelen);
+	dep->namelen = args->name.len;
+	memcpy(dep->name, args->name.name, dep->namelen);
 	dp->d_ops->data_put_ftype(dep, args->filetype);
 	tagp = dp->d_ops->data_entry_tag_p(dep);
 	*tagp = cpu_to_be16((char *)dep - (char *)hdr);
diff --git a/libxfs/xfs_dir2_sf.c b/libxfs/xfs_dir2_sf.c
index 50bcb8a..1a8254b 100644
--- a/libxfs/xfs_dir2_sf.c
+++ b/libxfs/xfs_dir2_sf.c
@@ -291,7 +291,7 @@ xfs_dir2_sf_addname(
 	/*
 	 * Compute entry (and change in) size.
 	 */
-	incr_isize = dp->d_ops->sf_entsize(sfp, args->namelen);
+	incr_isize = dp->d_ops->sf_entsize(sfp, args->name.len);
 	objchange = 0;
 
 	/*
@@ -375,7 +375,7 @@ xfs_dir2_sf_addname_easy(
 	/*
 	 * Grow the in-inode space.
 	 */
-	xfs_idata_realloc(dp, dp->d_ops->sf_entsize(sfp, args->namelen),
+	xfs_idata_realloc(dp, dp->d_ops->sf_entsize(sfp, args->name.len),
 			  XFS_DATA_FORK);
 	/*
 	 * Need to set up again due to realloc of the inode data.
@@ -385,9 +385,9 @@ xfs_dir2_sf_addname_easy(
 	/*
 	 * Fill in the new entry.
 	 */
-	sfep->namelen = args->namelen;
+	sfep->namelen = args->name.len;
 	xfs_dir2_sf_put_offset(sfep, offset);
-	memcpy(sfep->name, args->name, sfep->namelen);
+	memcpy(sfep->name, args->name.name, sfep->namelen);
 	dp->d_ops->sf_put_ino(sfp, sfep, args->inumber);
 	dp->d_ops->sf_put_ftype(sfep, args->filetype);
 
@@ -446,7 +446,7 @@ xfs_dir2_sf_addname_hard(
 	 */
 	for (offset = dp->d_ops->data_first_offset,
 	      oldsfep = xfs_dir2_sf_firstentry(oldsfp),
-	      add_datasize = dp->d_ops->data_entsize(args->namelen),
+	      add_datasize = dp->d_ops->data_entsize(args->name.len),
 	      eof = (char *)oldsfep == &buf[old_isize];
 	     !eof;
 	     offset = new_offset + dp->d_ops->data_entsize(oldsfep->namelen),
@@ -476,9 +476,9 @@ xfs_dir2_sf_addname_hard(
 	/*
 	 * Fill in the new entry, and update the header counts.
 	 */
-	sfep->namelen = args->namelen;
+	sfep->namelen = args->name.len;
 	xfs_dir2_sf_put_offset(sfep, offset);
-	memcpy(sfep->name, args->name, sfep->namelen);
+	memcpy(sfep->name, args->name.name, sfep->namelen);
 	dp->d_ops->sf_put_ino(sfp, sfep, args->inumber);
 	dp->d_ops->sf_put_ftype(sfep, args->filetype);
 	sfp->count++;
@@ -522,7 +522,7 @@ xfs_dir2_sf_addname_pick(
 	dp = args->dp;
 
 	sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
-	size = dp->d_ops->data_entsize(args->namelen);
+	size = dp->d_ops->data_entsize(args->name.len);
 	offset = dp->d_ops->data_first_offset;
 	sfep = xfs_dir2_sf_firstentry(sfp);
 	holefit = 0;
@@ -807,7 +807,7 @@ xfs_dir2_sf_lookup(
 	/*
 	 * Special case for .
 	 */
-	if (args->namelen == 1 && args->name[0] == '.') {
+	if (args->name.len == 1 && args->name.name[0] == '.') {
 		args->inumber = dp->i_ino;
 		args->cmpresult = XFS_CMP_EXACT;
 		args->filetype = XFS_DIR3_FT_DIR;
@@ -816,8 +816,8 @@ xfs_dir2_sf_lookup(
 	/*
 	 * Special case for ..
 	 */
-	if (args->namelen == 2 &&
-	    args->name[0] == '.' && args->name[1] == '.') {
+	if (args->name.len == 2 &&
+	    args->name.name[0] == '.' && args->name.name[1] == '.') {
 		args->inumber = dp->d_ops->sf_get_parent_ino(sfp);
 		args->cmpresult = XFS_CMP_EXACT;
 		args->filetype = XFS_DIR3_FT_DIR;
@@ -912,7 +912,7 @@ xfs_dir2_sf_removename(
 	 * Calculate sizes.
 	 */
 	byteoff = (int)((char *)sfep - (char *)sfp);
-	entsize = dp->d_ops->sf_entsize(sfp, args->namelen);
+	entsize = dp->d_ops->sf_entsize(sfp, args->name.len);
 	newsize = oldsize - entsize;
 	/*
 	 * Copy the part if any after the removed entry, sliding it down.
@@ -1002,12 +1002,12 @@ xfs_dir2_sf_replace(
 	} else
 		i8elevated = 0;
 
-	ASSERT(args->namelen != 1 || args->name[0] != '.');
+	ASSERT(args->name.len != 1 || args->name.name[0] != '.');
 	/*
 	 * Replace ..'s entry.
 	 */
-	if (args->namelen == 2 &&
-	    args->name[0] == '.' && args->name[1] == '.') {
+	if (args->name.len == 2 &&
+	    args->name.name[0] == '.' && args->name.name[1] == '.') {
 		ino = dp->d_ops->sf_get_parent_ino(sfp);
 		ASSERT(args->inumber != ino);
 		dp->d_ops->sf_put_parent_ino(sfp, args->inumber);
-- 
2.7.4

[PATCH v6 04/17] xfsprogs: Add xfs_has_attr and subroutines

[Allison Collins]

This patch adds a new functions to check for the existence of an
attribute.  Subroutines are also added to handle the cases of leaf
blocks, nodes or shortform.  Common code that appears in existing attr
add and remove functions have been factored out to help reduce the
appearance of duplicated code.  We will need these routines later for
delayed attributes since delayed operations cannot return error codes.

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
---
 libxfs/xfs_attr.c      | 171 ++++++++++++++++++++++++++++++++-----------------
 libxfs/xfs_attr.h      |   1 +
 libxfs/xfs_attr_leaf.c | 111 ++++++++++++++++++++------------
 libxfs/xfs_attr_leaf.h |   3 +
 4 files changed, 188 insertions(+), 98 deletions(-)

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index 4fe27f1..a96761c 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -45,6 +45,7 @@ STATIC int xfs_attr_shortform_addname(xfs_da_args_t *args);
 STATIC int xfs_attr_leaf_get(xfs_da_args_t *args);
 STATIC int xfs_attr_leaf_addname(xfs_da_args_t *args);
 STATIC int xfs_attr_leaf_removename(xfs_da_args_t *args);
+STATIC int xfs_attr_leaf_hasname(struct xfs_da_args *args, struct xfs_buf **bp);
 
 /*
  * Internal routines when attribute list is more than one block.
@@ -52,6 +53,8 @@ STATIC int xfs_attr_leaf_removename(xfs_da_args_t *args);
 STATIC int xfs_attr_node_get(xfs_da_args_t *args);
 STATIC int xfs_attr_node_addname(xfs_da_args_t *args);
 STATIC int xfs_attr_node_removename(xfs_da_args_t *args);
+STATIC int xfs_attr_node_hasname(xfs_da_args_t *args,
+				 struct xfs_da_state **state);
 STATIC int xfs_attr_fillstate(xfs_da_state_t *state);
 STATIC int xfs_attr_refillstate(xfs_da_state_t *state);
 
@@ -309,6 +312,37 @@ xfs_attr_set_args(
 }
 
 /*
+ * Return EEXIST if attr is found, or ENOATTR if not
+ */
+int
+xfs_has_attr(
+	struct xfs_da_args      *args)
+{
+	struct xfs_inode	*dp = args->dp;
+	struct xfs_buf		*bp = NULL;
+	int			error;
+
+	if (!xfs_inode_hasattr(dp))
+		return -ENOATTR;
+
+	if (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) {
+		ASSERT(dp->i_afp->if_flags & XFS_IFINLINE);
+		return xfs_attr_sf_findname(args, NULL, NULL);
+	}
+
+	if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
+		error = xfs_attr_leaf_hasname(args, &bp);
+
+		if (bp)
+			xfs_trans_brelse(args->trans, bp);
+
+		return error;
+	}
+
+	return xfs_attr_node_hasname(args, NULL);
+}
+
+/*
  * Remove the attribute specified in @args.
  */
 int
@@ -582,26 +616,20 @@ STATIC int
 xfs_attr_leaf_addname(
 	struct xfs_da_args	*args)
 {
-	struct xfs_inode	*dp;
 	struct xfs_buf		*bp;
 	int			retval, error, forkoff;
+	struct xfs_inode	*dp = args->dp;
 
 	trace_xfs_attr_leaf_addname(args);
 
 	/*
-	 * Read the (only) block in the attribute list in.
-	 */
-	dp = args->dp;
-	args->blkno = 0;
-	error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp);
-	if (error)
-		return error;
-
-	/*
 	 * Look up the given attribute in the leaf block.  Figure out if
 	 * the given flags produce an error or call for an atomic rename.
 	 */
-	retval = xfs_attr3_leaf_lookup_int(bp, args);
+	retval = xfs_attr_leaf_hasname(args, &bp);
+	if (retval != -ENOATTR && retval != -EEXIST)
+		return retval;
+
 	if ((args->name.type & ATTR_REPLACE) && (retval == -ENOATTR)) {
 		xfs_trans_brelse(args->trans, bp);
 		return retval;
@@ -753,6 +781,27 @@ xfs_attr_leaf_addname(
 }
 
 /*
+ * Return EEXIST if attr is found, or ENOATTR if not
+ */
+STATIC int
+xfs_attr_leaf_hasname(
+	struct xfs_da_args      *args,
+	struct xfs_buf		**bp)
+{
+	int                     error = 0;
+
+	error = xfs_attr3_leaf_read(args->trans, args->dp, 0, -1, bp);
+	if (error)
+		return error;
+
+	error = xfs_attr3_leaf_lookup_int(*bp, args);
+	if (error != -ENOATTR && error != -EEXIST)
+		xfs_trans_brelse(args->trans, *bp);
+
+	return error;
+}
+
+/*
  * Remove a name from the leaf attribute list structure
  *
  * This leaf block cannot have a "remote" value, we only call this routine
@@ -772,12 +821,11 @@ xfs_attr_leaf_removename(
 	 * Remove the attribute.
 	 */
 	dp = args->dp;
-	args->blkno = 0;
-	error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp);
-	if (error)
+
+	error = xfs_attr_leaf_hasname(args, &bp);
+	if (error != -ENOATTR && error != -EEXIST)
 		return error;
 
-	error = xfs_attr3_leaf_lookup_int(bp, args);
 	if (error == -ENOATTR) {
 		xfs_trans_brelse(args->trans, bp);
 		return error;
@@ -816,12 +864,10 @@ xfs_attr_leaf_get(xfs_da_args_t *args)
 
 	trace_xfs_attr_leaf_get(args);
 
-	args->blkno = 0;
-	error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp);
-	if (error)
+	error = xfs_attr_leaf_hasname(args, &bp);
+	if (error != -ENOATTR && error != -EEXIST)
 		return error;
 
-	error = xfs_attr3_leaf_lookup_int(bp, args);
 	if (error != -EEXIST)  {
 		xfs_trans_brelse(args->trans, bp);
 		return error;
@@ -831,6 +877,41 @@ xfs_attr_leaf_get(xfs_da_args_t *args)
 	return error;
 }
 
+/*
+ * Return EEXIST if attr is found, or ENOATTR if not
+ * statep: If not null is set to point at the found state.  Caller will
+ *         be responsible for freeing the state in this case.
+ */
+STATIC int
+xfs_attr_node_hasname(
+	struct xfs_da_args	*args,
+	struct xfs_da_state	**statep)
+{
+	struct xfs_da_state	*state;
+	int			retval, error;
+
+	state = xfs_da_state_alloc();
+	state->args = args;
+	state->mp = args->dp->i_mount;
+
+	if (statep != NULL)
+		*statep = NULL;
+
+	/*
+	 * Search to see if name exists, and get back a pointer to it.
+	 */
+	error = xfs_da3_node_lookup_int(state, &retval);
+	if (error == 0) {
+		if (statep != NULL)
+			*statep = state;
+		return retval;
+	}
+
+	xfs_da_state_free(state);
+
+	return error;
+}
+
 /*========================================================================
  * External routines when attribute list size > geo->blksize
  *========================================================================*/
@@ -863,20 +944,17 @@ xfs_attr_node_addname(
 	dp = args->dp;
 	mp = dp->i_mount;
 restart:
-	state = xfs_da_state_alloc();
-	state->args = args;
-	state->mp = mp;
-
 	/*
 	 * Search to see if name already exists, and get back a pointer
 	 * to where it should go.
 	 */
-	error = xfs_da3_node_lookup_int(state, &retval);
-	if (error)
+	retval = xfs_attr_node_hasname(args, &state);
+	if (retval != -ENOATTR)
 		goto out;
+
 	blk = &state->path.blk[ state->path.active-1 ];
 	ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC);
-	if ((args->name.type & ATTR_REPLACE) && (retval == -ENOATTR)) {
+	if (args->name.type & ATTR_REPLACE) {
 		goto out;
 	} else if (retval == -EEXIST) {
 		if (args->name.type & ATTR_CREATE)
@@ -1078,29 +1156,15 @@ xfs_attr_node_removename(
 {
 	struct xfs_da_state	*state;
 	struct xfs_da_state_blk	*blk;
-	struct xfs_inode	*dp;
 	struct xfs_buf		*bp;
 	int			retval, error, forkoff;
+	struct xfs_inode	*dp = args->dp;
 
 	trace_xfs_attr_node_removename(args);
 
-	/*
-	 * Tie a string around our finger to remind us where we are.
-	 */
-	dp = args->dp;
-	state = xfs_da_state_alloc();
-	state->args = args;
-	state->mp = dp->i_mount;
-
-	/*
-	 * Search to see if name exists, and get back a pointer to it.
-	 */
-	error = xfs_da3_node_lookup_int(state, &retval);
-	if (error || (retval != -EEXIST)) {
-		if (error == 0)
-			error = retval;
+	error = xfs_attr_node_hasname(args, &state);
+	if (error != -EEXIST)
 		goto out;
-	}
 
 	/*
 	 * If there is an out-of-line value, de-allocate the blocks.
@@ -1195,7 +1259,8 @@ xfs_attr_node_removename(
 	error = 0;
 
 out:
-	xfs_da_state_free(state);
+	if (state)
+		xfs_da_state_free(state);
 	return error;
 }
 
@@ -1317,31 +1382,23 @@ xfs_attr_node_get(xfs_da_args_t *args)
 {
 	xfs_da_state_t *state;
 	xfs_da_state_blk_t *blk;
-	int error, retval;
+	int error;
 	int i;
 
 	trace_xfs_attr_node_get(args);
 
-	state = xfs_da_state_alloc();
-	state->args = args;
-	state->mp = args->dp->i_mount;
-
 	/*
 	 * Search to see if name exists, and get back a pointer to it.
 	 */
-	error = xfs_da3_node_lookup_int(state, &retval);
-	if (error) {
-		retval = error;
-		goto out_release;
-	}
-	if (retval != -EEXIST)
+	error = xfs_attr_node_hasname(args, &state);
+	if (error != -EEXIST)
 		goto out_release;
 
 	/*
 	 * Get the value, local or "remote"
 	 */
 	blk = &state->path.blk[state->path.active - 1];
-	retval = xfs_attr3_leaf_getvalue(blk->bp, args);
+	error = xfs_attr3_leaf_getvalue(blk->bp, args);
 
 	/*
 	 * If not in a transaction, we have to release all the buffers.
@@ -1353,7 +1410,7 @@ out_release:
 	}
 
 	xfs_da_state_free(state);
-	return retval;
+	return error;
 }
 
 /* Returns true if the attribute entry name is valid. */
diff --git a/libxfs/xfs_attr.h b/libxfs/xfs_attr.h
index 44dd07a..3b5dad4 100644
--- a/libxfs/xfs_attr.h
+++ b/libxfs/xfs_attr.h
@@ -150,6 +150,7 @@ int xfs_attr_set(struct xfs_inode *dp, struct xfs_name *name,
 		 unsigned char *value, int valuelen, int flags);
 int xfs_attr_set_args(struct xfs_da_args *args);
 int xfs_attr_remove(struct xfs_inode *dp, struct xfs_name *name, int flags);
+int xfs_has_attr(struct xfs_da_args *args);
 int xfs_attr_remove_args(struct xfs_da_args *args);
 int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize,
 		  int flags, struct attrlist_cursor_kern *cursor);
diff --git a/libxfs/xfs_attr_leaf.c b/libxfs/xfs_attr_leaf.c
index 1389970..542315e 100644
--- a/libxfs/xfs_attr_leaf.c
+++ b/libxfs/xfs_attr_leaf.c
@@ -586,18 +586,66 @@ xfs_attr_shortform_create(xfs_da_args_t *args)
 }
 
 /*
+ * Return -EEXIST if attr is found, or -ENOATTR if not
+ * args:  args containing attribute name and namelen
+ * sfep:  If not null, pointer will be set to the last attr entry found on
+	  -EEXIST.  On -ENOATTR pointer is left at the last entry in the list
+ * basep: If not null, pointer is set to the byte offset of the entry in the
+ *	  list on -EEXIST.  On -ENOATTR, pointer is left at the byte offset of
+ *	  the last entry in the list
+ */
+int
+xfs_attr_sf_findname(
+	struct xfs_da_args	 *args,
+	struct xfs_attr_sf_entry **sfep,
+	unsigned int		 *basep)
+{
+	struct xfs_attr_shortform *sf;
+	struct xfs_attr_sf_entry *sfe;
+	unsigned int		base = sizeof(struct xfs_attr_sf_hdr);
+	int			size = 0;
+	int			end;
+	int			i;
+
+	sf = (struct xfs_attr_shortform *)args->dp->i_afp->if_u1.if_data;
+	sfe = &sf->list[0];
+	end = sf->hdr.count;
+	for (i = 0; i < end; sfe = XFS_ATTR_SF_NEXTENTRY(sfe),
+			base += size, i++) {
+		size = XFS_ATTR_SF_ENTSIZE(sfe);
+		if (sfe->namelen != args->name.len)
+			continue;
+		if (memcmp(sfe->nameval, args->name.name, args->name.len) != 0)
+			continue;
+		if (!xfs_attr_namesp_match(args->name.type, sfe->flags))
+			continue;
+		break;
+	}
+
+	if (sfep != NULL)
+		*sfep = sfe;
+
+	if (basep != NULL)
+		*basep = base;
+
+	if (i == end)
+		return -ENOATTR;
+	return -EEXIST;
+}
+
+/*
  * Add a name/value pair to the shortform attribute list.
  * Overflow from the inode has already been checked for.
  */
 void
-xfs_attr_shortform_add(xfs_da_args_t *args, int forkoff)
+xfs_attr_shortform_add(struct xfs_da_args *args, int forkoff)
 {
-	xfs_attr_shortform_t *sf;
-	xfs_attr_sf_entry_t *sfe;
-	int i, offset, size;
-	xfs_mount_t *mp;
-	xfs_inode_t *dp;
-	struct xfs_ifork *ifp;
+	struct xfs_attr_shortform	*sf;
+	struct xfs_attr_sf_entry	*sfe;
+	int				offset, size, error;
+	struct xfs_mount		*mp;
+	struct xfs_inode		*dp;
+	struct xfs_ifork		*ifp;
 
 	trace_xfs_attr_sf_add(args);
 
@@ -608,18 +656,8 @@ xfs_attr_shortform_add(xfs_da_args_t *args, int forkoff)
 	ifp = dp->i_afp;
 	ASSERT(ifp->if_flags & XFS_IFINLINE);
 	sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
-	sfe = &sf->list[0];
-	for (i = 0; i < sf->hdr.count; sfe = XFS_ATTR_SF_NEXTENTRY(sfe), i++) {
-#ifdef DEBUG
-		if (sfe->namelen != args->name.len)
-			continue;
-		if (memcmp(args->name.name, sfe->nameval, args->name.len) != 0)
-			continue;
-		if (!xfs_attr_namesp_match(args->name.type, sfe->flags))
-			continue;
-		ASSERT(0);
-#endif
-	}
+	error = xfs_attr_sf_findname(args, &sfe, NULL);
+	ASSERT(error != -EEXIST);
 
 	offset = (char *)sfe - (char *)sf;
 	size = XFS_ATTR_SF_ENTSIZE_BYNAME(args->name.len, args->valuelen);
@@ -662,35 +700,26 @@ xfs_attr_fork_remove(
  * Remove an attribute from the shortform attribute list structure.
  */
 int
-xfs_attr_shortform_remove(xfs_da_args_t *args)
+xfs_attr_shortform_remove(struct xfs_da_args *args)
 {
-	xfs_attr_shortform_t *sf;
-	xfs_attr_sf_entry_t *sfe;
-	int base, size=0, end, totsize, i;
-	xfs_mount_t *mp;
-	xfs_inode_t *dp;
+	struct xfs_attr_shortform	*sf;
+	struct xfs_attr_sf_entry	*sfe;
+	int				size = 0, end, totsize;
+	unsigned int			base;
+	struct xfs_mount		*mp;
+	struct xfs_inode		*dp;
+	int				error;
 
 	trace_xfs_attr_sf_remove(args);
 
 	dp = args->dp;
 	mp = dp->i_mount;
-	base = sizeof(xfs_attr_sf_hdr_t);
 	sf = (xfs_attr_shortform_t *)dp->i_afp->if_u1.if_data;
-	sfe = &sf->list[0];
-	end = sf->hdr.count;
-	for (i = 0; i < end; sfe = XFS_ATTR_SF_NEXTENTRY(sfe),
-					base += size, i++) {
-		size = XFS_ATTR_SF_ENTSIZE(sfe);
-		if (sfe->namelen != args->name.len)
-			continue;
-		if (memcmp(sfe->nameval, args->name.name, args->name.len) != 0)
-			continue;
-		if (!xfs_attr_namesp_match(args->name.type, sfe->flags))
-			continue;
-		break;
-	}
-	if (i == end)
-		return -ENOATTR;
+
+	error = xfs_attr_sf_findname(args, &sfe, &base);
+	if (error != -EEXIST)
+		return error;
+	size = XFS_ATTR_SF_ENTSIZE(sfe);
 
 	/*
 	 * Fix up the attribute fork data, covering the hole
diff --git a/libxfs/xfs_attr_leaf.h b/libxfs/xfs_attr_leaf.h
index 7b74e18..736a9ba 100644
--- a/libxfs/xfs_attr_leaf.h
+++ b/libxfs/xfs_attr_leaf.h
@@ -39,6 +39,9 @@ int	xfs_attr_shortform_getvalue(struct xfs_da_args *args);
 int	xfs_attr_shortform_to_leaf(struct xfs_da_args *args,
 			struct xfs_buf **leaf_bp);
 int	xfs_attr_shortform_remove(struct xfs_da_args *args);
+int	xfs_attr_sf_findname(struct xfs_da_args *args,
+			     struct xfs_attr_sf_entry **sfep,
+			     unsigned int *basep);
 int	xfs_attr_shortform_allfit(struct xfs_buf *bp, struct xfs_inode *dp);
 int	xfs_attr_shortform_bytesfit(struct xfs_inode *dp, int bytes);
 xfs_failaddr_t xfs_attr_shortform_verify(struct xfs_inode *ip);
-- 
2.7.4

[PATCH v6 05/17] xfsprogs: Factor out new helper functions xfs_attr_rmtval_set

[Allison Collins]

Break xfs_attr_rmtval_set into two helper functions
xfs_attr_rmt_find_hole and xfs_attr_rmtval_set_value.
xfs_attr_rmtval_set rolls the transaction between the
helpers, but delayed operations cannot.  We will use the helpers later
when constructing new delayed attribute routines.

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 libxfs/xfs_attr_remote.c | 149 +++++++++++++++++++++++++++++------------------
 1 file changed, 92 insertions(+), 57 deletions(-)

diff --git a/libxfs/xfs_attr_remote.c b/libxfs/xfs_attr_remote.c
index 0cadc82..edd6e90 100644
--- a/libxfs/xfs_attr_remote.c
+++ b/libxfs/xfs_attr_remote.c
@@ -422,32 +422,23 @@ xfs_attr_rmtval_get(
 }
 
 /*
- * Write the value associated with an attribute into the out-of-line buffer
- * that we have defined for it.
+ * Find a "hole" in the attribute address space large enough for us to drop the
+ * new attribute's value into
  */
-int
-xfs_attr_rmtval_set(
+STATIC int
+xfs_attr_rmt_find_hole(
 	struct xfs_da_args	*args)
 {
 	struct xfs_inode	*dp = args->dp;
 	struct xfs_mount	*mp = dp->i_mount;
-	struct xfs_bmbt_irec	map;
-	xfs_dablk_t		lblkno;
-	xfs_fileoff_t		lfileoff = 0;
-	uint8_t			*src = args->value;
-	int			blkcnt;
-	int			valuelen;
-	int			nmap;
 	int			error;
-	int			offset = 0;
-
-	trace_xfs_attr_rmtval_set(args);
+	int			blkcnt;
+	xfs_fileoff_t		lfileoff = 0;
 
 	/*
-	 * Find a "hole" in the attribute address space large enough for
-	 * us to drop the new attribute's value into. Because CRC enable
-	 * attributes have headers, we can't just do a straight byte to FSB
-	 * conversion and have to take the header space into account.
+	 * Because CRC enable attributes have headers, we can't just do a
+	 * straight byte to FSB conversion and have to take the header space
+	 * into account.
 	 */
 	blkcnt = xfs_attr3_rmt_blocks(mp, args->rmtvaluelen);
 	error = xfs_bmap_first_unused(args->trans, args->dp, blkcnt, &lfileoff,
@@ -455,48 +446,26 @@ xfs_attr_rmtval_set(
 	if (error)
 		return error;
 
-	args->rmtblkno = lblkno = (xfs_dablk_t)lfileoff;
+	args->rmtblkno = (xfs_dablk_t)lfileoff;
 	args->rmtblkcnt = blkcnt;
 
-	/*
-	 * Roll through the "value", allocating blocks on disk as required.
-	 */
-	while (blkcnt > 0) {
-		/*
-		 * Allocate a single extent, up to the size of the value.
-		 *
-		 * Note that we have to consider this a data allocation as we
-		 * write the remote attribute without logging the contents.
-		 * Hence we must ensure that we aren't using blocks that are on
-		 * the busy list so that we don't overwrite blocks which have
-		 * recently been freed but their transactions are not yet
-		 * committed to disk. If we overwrite the contents of a busy
-		 * extent and then crash then the block may not contain the
-		 * correct metadata after log recovery occurs.
-		 */
-		nmap = 1;
-		error = xfs_bmapi_write(args->trans, dp, (xfs_fileoff_t)lblkno,
-				  blkcnt, XFS_BMAPI_ATTRFORK, args->total, &map,
-				  &nmap);
-		if (error)
-			return error;
-		error = xfs_defer_finish(&args->trans);
-		if (error)
-			return error;
-
-		ASSERT(nmap == 1);
-		ASSERT((map.br_startblock != DELAYSTARTBLOCK) &&
-		       (map.br_startblock != HOLESTARTBLOCK));
-		lblkno += map.br_blockcount;
-		blkcnt -= map.br_blockcount;
+	return 0;
+}
 
-		/*
-		 * Start the next trans in the chain.
-		 */
-		error = xfs_trans_roll_inode(&args->trans, dp);
-		if (error)
-			return error;
-	}
+STATIC int
+xfs_attr_rmtval_set_value(
+	struct xfs_da_args	*args)
+{
+	struct xfs_inode	*dp = args->dp;
+	struct xfs_mount	*mp = dp->i_mount;
+	struct xfs_bmbt_irec	map;
+	xfs_dablk_t		lblkno;
+	uint8_t			*src = args->value;
+	int			blkcnt;
+	int			valuelen;
+	int			nmap;
+	int			error;
+	int			offset = 0;
 
 	/*
 	 * Roll through the "value", copying the attribute value to the
@@ -550,6 +519,72 @@ xfs_attr_rmtval_set(
 }
 
 /*
+ * Write the value associated with an attribute into the out-of-line buffer
+ * that we have defined for it.
+ */
+int
+xfs_attr_rmtval_set(
+	struct xfs_da_args	*args)
+{
+	struct xfs_inode	*dp = args->dp;
+	struct xfs_bmbt_irec	map;
+	xfs_dablk_t		lblkno;
+	int			blkcnt;
+	int			nmap;
+	int			error;
+
+	trace_xfs_attr_rmtval_set(args);
+
+	error = xfs_attr_rmt_find_hole(args);
+	if (error)
+		return error;
+
+	blkcnt = args->rmtblkcnt;
+	lblkno = (xfs_dablk_t)args->rmtblkno;
+	/*
+	 * Roll through the "value", allocating blocks on disk as required.
+	 */
+	while (blkcnt > 0) {
+		/*
+		 * Allocate a single extent, up to the size of the value.
+		 *
+		 * Note that we have to consider this a data allocation as we
+		 * write the remote attribute without logging the contents.
+		 * Hence we must ensure that we aren't using blocks that are on
+		 * the busy list so that we don't overwrite blocks which have
+		 * recently been freed but their transactions are not yet
+		 * committed to disk. If we overwrite the contents of a busy
+		 * extent and then crash then the block may not contain the
+		 * correct metadata after log recovery occurs.
+		 */
+		nmap = 1;
+		error = xfs_bmapi_write(args->trans, dp, (xfs_fileoff_t)lblkno,
+				  blkcnt, XFS_BMAPI_ATTRFORK, args->total, &map,
+				  &nmap);
+		if (error)
+			return error;
+		error = xfs_defer_finish(&args->trans);
+		if (error)
+			return error;
+
+		ASSERT(nmap == 1);
+		ASSERT((map.br_startblock != DELAYSTARTBLOCK) &&
+		       (map.br_startblock != HOLESTARTBLOCK));
+		lblkno += map.br_blockcount;
+		blkcnt -= map.br_blockcount;
+
+		/*
+		 * Start the next trans in the chain.
+		 */
+		error = xfs_trans_roll_inode(&args->trans, dp);
+		if (error)
+			return error;
+	}
+
+	return xfs_attr_rmtval_set_value(args);
+}
+
+/*
  * Remove the value associated with an attribute by deleting the
  * out-of-line buffer that it is stored on.
  */
-- 
2.7.4

[PATCH v6 06/17] xfsprogs: Factor out trans handling in xfs_attr3_leaf_flipflags

[Allison Collins]

Since delayed operations cannot roll transactions, factor up the
transaction handling into the calling function

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 libxfs/xfs_attr.c      | 14 ++++++++++++++
 libxfs/xfs_attr_leaf.c |  7 +------
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index a96761c..6b15d12 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -726,6 +726,13 @@ xfs_attr_leaf_addname(
 		error = xfs_attr3_leaf_flipflags(args);
 		if (error)
 			return error;
+		/*
+		 * Commit the flag value change and start the next trans in
+		 * series.
+		 */
+		error = xfs_trans_roll_inode(&args->trans, args->dp);
+		if (error)
+			return error;
 
 		/*
 		 * Dismantle the "old" attribute/value pair by removing
@@ -1068,6 +1075,13 @@ restart:
 		error = xfs_attr3_leaf_flipflags(args);
 		if (error)
 			goto out;
+		/*
+		 * Commit the flag value change and start the next trans in
+		 * series
+		 */
+		error = xfs_trans_roll_inode(&args->trans, args->dp);
+		if (error)
+			goto out;
 
 		/*
 		 * Dismantle the "old" attribute/value pair by removing
diff --git a/libxfs/xfs_attr_leaf.c b/libxfs/xfs_attr_leaf.c
index 542315e..b4be417 100644
--- a/libxfs/xfs_attr_leaf.c
+++ b/libxfs/xfs_attr_leaf.c
@@ -2899,10 +2899,5 @@ xfs_attr3_leaf_flipflags(
 			 XFS_DA_LOGRANGE(leaf2, name_rmt, sizeof(*name_rmt)));
 	}
 
-	/*
-	 * Commit the flag value change and start the next trans in series.
-	 */
-	error = xfs_trans_roll_inode(&args->trans, args->dp);
-
-	return error;
+	return 0;
 }
-- 
2.7.4

[PATCH v6 07/17] xfsprogs: Factor out xfs_attr_leaf_addname helper

[Allison Collins]

Factor out new helper function xfs_attr_leaf_try_add. Because new
delayed attribute routines cannot roll transactions, we carve off the
parts of xfs_attr_leaf_addname that we can use, and move the commit into
the calling function.

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
---
 libxfs/xfs_attr.c | 83 ++++++++++++++++++++++++++++++++-----------------------
 1 file changed, 49 insertions(+), 34 deletions(-)

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index 6b15d12..30d1335 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -304,10 +304,30 @@ xfs_attr_set_args(
 		}
 	}
 
-	if (xfs_bmap_one_block(dp, XFS_ATTR_FORK))
+	if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
 		error = xfs_attr_leaf_addname(args);
-	else
-		error = xfs_attr_node_addname(args);
+		if (error != -ENOSPC)
+			return error;
+
+		/*
+		 * Commit that transaction so that the node_addname()
+		 * call can manage its own transactions.
+		 */
+		error = xfs_defer_finish(&args->trans);
+		if (error)
+			return error;
+
+		/*
+		 * Commit the current trans (including the inode) and
+		 * start a new one.
+		 */
+		error = xfs_trans_roll_inode(&args->trans, dp);
+		if (error)
+			return error;
+
+	}
+
+	error = xfs_attr_node_addname(args);
 	return error;
 }
 
@@ -606,21 +626,12 @@ xfs_attr_shortform_addname(xfs_da_args_t *args)
  * External routines when attribute list is one block
  *========================================================================*/
 
-/*
- * Add a name to the leaf attribute list structure
- *
- * This leaf block cannot have a "remote" value, we only call this routine
- * if bmap_one_block() says there is only one block (ie: no remote blks).
- */
 STATIC int
-xfs_attr_leaf_addname(
-	struct xfs_da_args	*args)
+xfs_attr_leaf_try_add(
+	struct xfs_da_args	*args,
+	struct xfs_buf		*bp)
 {
-	struct xfs_buf		*bp;
-	int			retval, error, forkoff;
-	struct xfs_inode	*dp = args->dp;
-
-	trace_xfs_attr_leaf_addname(args);
+	int			retval, error;
 
 	/*
 	 * Look up the given attribute in the leaf block.  Figure out if
@@ -666,31 +677,35 @@ xfs_attr_leaf_addname(
 	retval = xfs_attr3_leaf_add(bp, args);
 	if (retval == -ENOSPC) {
 		/*
-		 * Promote the attribute list to the Btree format, then
-		 * Commit that transaction so that the node_addname() call
-		 * can manage its own transactions.
+		 * Promote the attribute list to the Btree format.
+		 * Unless an error occurs, retain the -ENOSPC retval
 		 */
 		error = xfs_attr3_leaf_to_node(args);
 		if (error)
 			return error;
-		error = xfs_defer_finish(&args->trans);
-		if (error)
-			return error;
+	}
+	return retval;
+}
 
-		/*
-		 * Commit the current trans (including the inode) and start
-		 * a new one.
-		 */
-		error = xfs_trans_roll_inode(&args->trans, dp);
-		if (error)
-			return error;
 
-		/*
-		 * Fob the whole rest of the problem off on the Btree code.
-		 */
-		error = xfs_attr_node_addname(args);
+/*
+ * Add a name to the leaf attribute list structure
+ *
+ * This leaf block cannot have a "remote" value, we only call this routine
+ * if bmap_one_block() says there is only one block (ie: no remote blks).
+ */
+STATIC int
+xfs_attr_leaf_addname(struct xfs_da_args	*args)
+{
+	int			error, forkoff;
+	struct xfs_buf		*bp = NULL;
+	struct xfs_inode	*dp = args->dp;
+
+	trace_xfs_attr_leaf_addname(args);
+
+	error = xfs_attr_leaf_try_add(args, bp);
+	if (error)
 		return error;
-	}
 
 	/*
 	 * Commit the transaction that added the attr name so that
-- 
2.7.4

[PATCH v6 08/17] xfsprogs: Refactor xfs_attr_try_sf_addname

[Allison Collins]

To help pre-simplify xfs_attr_set_args, we need to hoist transacation
handling up, while modularizing the adjacent code down into helpers. In
this patch, hoist the commit in xfs_attr_try_sf_addname up into the
calling function, and also pull the attr list creation down.

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
---
 libxfs/xfs_attr.c | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index 30d1335..0b21a6a 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -226,8 +226,13 @@ xfs_attr_try_sf_addname(
 	struct xfs_da_args	*args)
 {
 
-	struct xfs_mount	*mp = dp->i_mount;
-	int			error, error2;
+	int			error;
+
+	/*
+	 * Build initial attribute list (if required).
+	 */
+	if (dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS)
+		xfs_attr_shortform_create(args);
 
 	error = xfs_attr_shortform_addname(args);
 	if (error == -ENOSPC)
@@ -240,12 +245,10 @@ xfs_attr_try_sf_addname(
 	if (!error && (args->name.type & ATTR_KERNOTIME) == 0)
 		xfs_trans_ichgtime(args->trans, dp, XFS_ICHGTIME_CHG);
 
-	if (mp->m_flags & XFS_MOUNT_WSYNC)
+	if (dp->i_mount->m_flags & XFS_MOUNT_WSYNC)
 		xfs_trans_set_sync(args->trans);
 
-	error2 = xfs_trans_commit(args->trans);
-	args->trans = NULL;
-	return error ? error : error2;
+	return error;
 }
 
 /*
@@ -257,7 +260,7 @@ xfs_attr_set_args(
 {
 	struct xfs_inode	*dp = args->dp;
 	struct xfs_buf          *leaf_bp = NULL;
-	int			error;
+	int			error, error2 = 0;
 
 	/*
 	 * If the attribute list is non-existent or a shortform list,
@@ -268,17 +271,14 @@ xfs_attr_set_args(
 	     dp->i_d.di_anextents == 0)) {
 
 		/*
-		 * Build initial attribute list (if required).
-		 */
-		if (dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS)
-			xfs_attr_shortform_create(args);
-
-		/*
 		 * Try to add the attr to the attribute list in the inode.
 		 */
 		error = xfs_attr_try_sf_addname(dp, args);
-		if (error != -ENOSPC)
-			return error;
+		if (error != -ENOSPC) {
+			error2 = xfs_trans_commit(args->trans);
+			args->trans = NULL;
+			return error ? error : error2;
+		}
 
 		/*
 		 * It won't fit in the shortform, transform to a leaf block.
-- 
2.7.4

[PATCH v6 09/17] xfsprogs: Factor out trans roll from xfs_attr3_leaf_setflag

[Allison Collins]

New delayed allocation routines cannot be handling transactions so
factor them up into the calling functions

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
---
 libxfs/xfs_attr.c      | 5 +++++
 libxfs/xfs_attr_leaf.c | 5 +----
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index 0b21a6a..09dba65 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -1220,6 +1220,11 @@ xfs_attr_node_removename(
 		error = xfs_attr3_leaf_setflag(args);
 		if (error)
 			goto out;
+
+		error = xfs_trans_roll_inode(&args->trans, args->dp);
+		if (error)
+			goto out;
+
 		error = xfs_attr_rmtval_remove(args);
 		if (error)
 			goto out;
diff --git a/libxfs/xfs_attr_leaf.c b/libxfs/xfs_attr_leaf.c
index b4be417..89ceb20 100644
--- a/libxfs/xfs_attr_leaf.c
+++ b/libxfs/xfs_attr_leaf.c
@@ -2781,10 +2781,7 @@ xfs_attr3_leaf_setflag(
 			 XFS_DA_LOGRANGE(leaf, name_rmt, sizeof(*name_rmt)));
 	}
 
-	/*
-	 * Commit the flag value change and start the next trans in series.
-	 */
-	return xfs_trans_roll_inode(&args->trans, args->dp);
+	return 0;
 }
 
 /*
-- 
2.7.4

[PATCH v6 10/17] xfsprogs: Factor out xfs_attr_rmtval_invalidate

[Allison Collins]

Because new delayed attribute routines cannot roll transactions, we
carve off the parts of xfs_attr_rmtval_remove that we can use.  This
will help to reduce repetitive code later when we introduce delayed
attributes.

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 libxfs/xfs_attr_remote.c | 26 +++++++++++++++++++++-----
 libxfs/xfs_attr_remote.h |  2 +-
 2 files changed, 22 insertions(+), 6 deletions(-)

diff --git a/libxfs/xfs_attr_remote.c b/libxfs/xfs_attr_remote.c
index edd6e90..cfeca71 100644
--- a/libxfs/xfs_attr_remote.c
+++ b/libxfs/xfs_attr_remote.c
@@ -589,16 +589,13 @@ xfs_attr_rmtval_set(
  * out-of-line buffer that it is stored on.
  */
 int
-xfs_attr_rmtval_remove(
+xfs_attr_rmtval_invalidate(
 	struct xfs_da_args	*args)
 {
 	struct xfs_mount	*mp = args->dp->i_mount;
 	xfs_dablk_t		lblkno;
 	int			blkcnt;
 	int			error;
-	int			done;
-
-	trace_xfs_attr_rmtval_remove(args);
 
 	/*
 	 * Roll through the "value", invalidating the attribute value's blocks.
@@ -640,13 +637,32 @@ xfs_attr_rmtval_remove(
 		lblkno += map.br_blockcount;
 		blkcnt -= map.br_blockcount;
 	}
+	return 0;
+}
 
+/*
+ * Remove the value associated with an attribute by deleting the
+ * out-of-line buffer that it is stored on.
+ */
+int
+xfs_attr_rmtval_remove(
+	struct xfs_da_args      *args)
+{
+	xfs_dablk_t		lblkno;
+	int			blkcnt;
+	int			error = 0;
+	int			done = 0;
+
+	trace_xfs_attr_rmtval_remove(args);
+
+	error = xfs_attr_rmtval_invalidate(args);
+	if (error)
+		return error;
 	/*
 	 * Keep de-allocating extents until the remote-value region is gone.
 	 */
 	lblkno = args->rmtblkno;
 	blkcnt = args->rmtblkcnt;
-	done = 0;
 	while (!done) {
 		error = xfs_bunmapi(args->trans, args->dp, lblkno, blkcnt,
 				    XFS_BMAPI_ATTRFORK, 1, &done);
diff --git a/libxfs/xfs_attr_remote.h b/libxfs/xfs_attr_remote.h
index 9d20b66..85f2593 100644
--- a/libxfs/xfs_attr_remote.h
+++ b/libxfs/xfs_attr_remote.h
@@ -11,5 +11,5 @@ int xfs_attr3_rmt_blocks(struct xfs_mount *mp, int attrlen);
 int xfs_attr_rmtval_get(struct xfs_da_args *args);
 int xfs_attr_rmtval_set(struct xfs_da_args *args);
 int xfs_attr_rmtval_remove(struct xfs_da_args *args);
-
+int xfs_attr_rmtval_invalidate(struct xfs_da_args *args);
 #endif /* __XFS_ATTR_REMOTE_H__ */
-- 
2.7.4

[PATCH v6 11/17] xfsprogs: Factor out trans roll in xfs_attr3_leaf_clearflag

[Allison Collins]

New delayed allocation routines cannot be handling transactions so
factor them out into the calling functions

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 libxfs/xfs_attr.c      | 16 ++++++++++++++++
 libxfs/xfs_attr_leaf.c |  5 +----
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index 09dba65..b681f54 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -798,6 +798,14 @@ xfs_attr_leaf_addname(struct xfs_da_args	*args)
 		 * Added a "remote" value, just clear the incomplete flag.
 		 */
 		error = xfs_attr3_leaf_clearflag(args);
+		if (error)
+			return error;
+
+		/*
+		 * Commit the flag value change and start the next trans in
+		 * series.
+		 */
+		error = xfs_trans_roll_inode(&args->trans, args->dp);
 	}
 	return error;
 }
@@ -1161,6 +1169,14 @@ restart:
 		error = xfs_attr3_leaf_clearflag(args);
 		if (error)
 			goto out;
+
+		 /*
+		  * Commit the flag value change and start the next trans in
+		  * series.
+		  */
+		error = xfs_trans_roll_inode(&args->trans, args->dp);
+		if (error)
+			goto out;
 	}
 	retval = error = 0;
 
diff --git a/libxfs/xfs_attr_leaf.c b/libxfs/xfs_attr_leaf.c
index 89ceb20..e14b3f4 100644
--- a/libxfs/xfs_attr_leaf.c
+++ b/libxfs/xfs_attr_leaf.c
@@ -2730,10 +2730,7 @@ xfs_attr3_leaf_clearflag(
 			 XFS_DA_LOGRANGE(leaf, name_rmt, sizeof(*name_rmt)));
 	}
 
-	/*
-	 * Commit the flag value change and start the next trans in series.
-	 */
-	return xfs_trans_roll_inode(&args->trans, args->dp);
+	return 0;
 }
 
 /*
-- 
2.7.4

[PATCH v6 12/17] xfsprogs: Check for -ENOATTR or -EEXIST

[Allison Collins]

Delayed operations cannot return error codes.  So we must check for
these conditions first before starting set or remove operations

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
---
 libxfs/xfs_attr.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index b681f54..042eee2 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -456,6 +456,14 @@ xfs_attr_set(
 		goto out_trans_cancel;
 
 	xfs_trans_ijoin(args.trans, dp, 0);
+
+	error = xfs_has_attr(&args);
+	if (error == -EEXIST && (name->type & ATTR_CREATE))
+		goto out_trans_cancel;
+
+	if (error == -ENOATTR && (name->type & ATTR_REPLACE))
+		goto out_trans_cancel;
+
 	error = xfs_attr_set_args(&args);
 	if (error)
 		goto out_trans_cancel;
@@ -544,6 +552,10 @@ xfs_attr_remove(
 	 */
 	xfs_trans_ijoin(args.trans, dp, 0);
 
+	error = xfs_has_attr(&args);
+	if (error != -EEXIST)
+		goto out;
+
 	error = xfs_attr_remove_args(&args);
 	if (error)
 		goto out;
-- 
2.7.4

[PATCH v6 13/17] xfsprogs: Add helper function xfs_attr_init_unmapstate

[Allison Collins]

This patch helps to pre-simplify xfs_attr_node_removename by modularizing
the code around the transactions into helper functions.  This will make
the function easier to follow when we introduce delayed attributes.

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
---
 libxfs/xfs_attr.c | 45 +++++++++++++++++++++++++++++++--------------
 1 file changed, 31 insertions(+), 14 deletions(-)

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index 042eee2..440af79 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -1201,6 +1201,36 @@ out:
 }
 
 /*
+ * Set up the state for unmap and set the incomplete flag
+ */
+STATIC int
+xfs_attr_init_unmapstate(
+	struct xfs_da_args	*args,
+	struct xfs_da_state	*state)
+{
+	int error;
+
+	/*
+	 * Fill in disk block numbers in the state structure
+	 * so that we can get the buffers back after we commit
+	 * several transactions in the following calls.
+	 */
+	error = xfs_attr_fillstate(state);
+	if (error)
+		return error;
+
+	/*
+	 * Mark the attribute as INCOMPLETE
+	 */
+	error = xfs_attr3_leaf_setflag(args);
+	if (error)
+		return error;
+
+	return 0;
+}
+
+
+/*
  * Remove a name from a B-tree attribute list.
  *
  * This will involve walking down the Btree, and may involve joining
@@ -1232,20 +1262,7 @@ xfs_attr_node_removename(
 	ASSERT(blk->bp != NULL);
 	ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC);
 	if (args->rmtblkno > 0) {
-		/*
-		 * Fill in disk block numbers in the state structure
-		 * so that we can get the buffers back after we commit
-		 * several transactions in the following calls.
-		 */
-		error = xfs_attr_fillstate(state);
-		if (error)
-			goto out;
-
-		/*
-		 * Mark the attribute as INCOMPLETE, then bunmapi() the
-		 * remote value.
-		 */
-		error = xfs_attr3_leaf_setflag(args);
+		error = xfs_attr_init_unmapstate(args, state);
 		if (error)
 			goto out;
 
-- 
2.7.4

[PATCH v6 14/17] xfsprogs: Add helper function xfs_attr_rmtval_unmap

[Allison Collins]

This function is similar to xfs_attr_rmtval_remove, but adapted to
return. EAGAIN for new transactions. We will use this later when we
introduce delayed attributes

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
---
 libxfs/xfs_attr_remote.c | 27 +++++++++++++++++++++++++++
 libxfs/xfs_attr_remote.h |  1 +
 2 files changed, 28 insertions(+)

diff --git a/libxfs/xfs_attr_remote.c b/libxfs/xfs_attr_remote.c
index cfeca71..a209b00 100644
--- a/libxfs/xfs_attr_remote.c
+++ b/libxfs/xfs_attr_remote.c
@@ -681,3 +681,30 @@ xfs_attr_rmtval_remove(
 	}
 	return 0;
 }
+
+/*
+ * Unmap value blocks for this attr.  This is similar to
+ * xfs_attr_rmtval_remove, but adapted to to return EAGAIN for new transactions
+ */
+int
+xfs_attr_rmtval_unmap(
+	struct xfs_da_args	*args)
+{
+	int	error, done;
+
+	/*
+	 * Unmap value blocks for this attr.  This is similar to
+	 * xfs_attr_rmtval_remove, but open coded here to return EAGAIN
+	 * for new transactions
+	 */
+	error = xfs_bunmapi(args->trans, args->dp,
+		    args->rmtblkno, args->rmtblkcnt,
+		    XFS_BMAPI_ATTRFORK, 1, &done);
+	if (error)
+		return error;
+
+	if (!done)
+		return -EAGAIN;
+
+	return 0;
+}
diff --git a/libxfs/xfs_attr_remote.h b/libxfs/xfs_attr_remote.h
index 85f2593..7ab3770 100644
--- a/libxfs/xfs_attr_remote.h
+++ b/libxfs/xfs_attr_remote.h
@@ -12,4 +12,5 @@ int xfs_attr_rmtval_get(struct xfs_da_args *args);
 int xfs_attr_rmtval_set(struct xfs_da_args *args);
 int xfs_attr_rmtval_remove(struct xfs_da_args *args);
 int xfs_attr_rmtval_invalidate(struct xfs_da_args *args);
+int xfs_attr_rmtval_unmap(struct xfs_da_args *args);
 #endif /* __XFS_ATTR_REMOTE_H__ */
-- 
2.7.4

[PATCH v6 15/17] xfsprogs: Simplify xfs_attr_set_args

[Allison Collins]

Delayed attribute mechanics make frequent use of goto statements.  We
can use this to further simplify xfs_attr_set_args.  In this patch we
introduce one of the gotos now to help pre-simplify the routine.  This
will help make proceeding patches in this area easier to read.

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
---
 libxfs/xfs_attr.c | 71 +++++++++++++++++++++++++++++--------------------------
 1 file changed, 37 insertions(+), 34 deletions(-)

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index 440af79..4ab97dd 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -263,47 +263,50 @@ xfs_attr_set_args(
 	int			error, error2 = 0;
 
 	/*
-	 * If the attribute list is non-existent or a shortform list,
-	 * upgrade it to a single-leaf-block attribute list.
+	 * If the attribute list is non-existent or a shortform list, proceed to
+	 * upgrade it to a single-leaf-block attribute list.  Otherwise jump
+	 * straight to leaf handling
 	 */
-	if (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL ||
+	if (!(dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL ||
 	    (dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS &&
-	     dp->i_d.di_anextents == 0)) {
+	     dp->i_d.di_anextents == 0)))
+		goto sf_to_leaf;
 
-		/*
-		 * Try to add the attr to the attribute list in the inode.
-		 */
-		error = xfs_attr_try_sf_addname(dp, args);
-		if (error != -ENOSPC) {
-			error2 = xfs_trans_commit(args->trans);
-			args->trans = NULL;
-			return error ? error : error2;
-		}
+	/*
+	 * Try to add the attr to the attribute list in the inode.
+	 */
+	error = xfs_attr_try_sf_addname(dp, args);
+	if (error != -ENOSPC) {
+		error2 = xfs_trans_commit(args->trans);
+		args->trans = NULL;
+		return error ? error : error2;
+	}
 
-		/*
-		 * It won't fit in the shortform, transform to a leaf block.
-		 * GROT: another possible req'mt for a double-split btree op.
-		 */
-		error = xfs_attr_shortform_to_leaf(args, &leaf_bp);
-		if (error)
-			return error;
+	/*
+	 * It won't fit in the shortform, transform to a leaf block.
+	 * GROT: another possible req'mt for a double-split btree op.
+	 */
+	error = xfs_attr_shortform_to_leaf(args, &leaf_bp);
+	if (error)
+		return error;
 
-		/*
-		 * Prevent the leaf buffer from being unlocked so that a
-		 * concurrent AIL push cannot grab the half-baked leaf
-		 * buffer and run into problems with the write verifier.
-		 * Once we're done rolling the transaction we can release
-		 * the hold and add the attr to the leaf.
-		 */
-		xfs_trans_bhold(args->trans, leaf_bp);
-		error = xfs_defer_finish(&args->trans);
-		xfs_trans_bhold_release(args->trans, leaf_bp);
-		if (error) {
-			xfs_trans_brelse(args->trans, leaf_bp);
-			return error;
-		}
+	/*
+	 * Prevent the leaf buffer from being unlocked so that a
+	 * concurrent AIL push cannot grab the half-baked leaf
+	 * buffer and run into problems with the write verifier.
+	 * Once we're done rolling the transaction we can release
+	 * the hold and add the attr to the leaf.
+	 */
+	xfs_trans_bhold(args->trans, leaf_bp);
+	error = xfs_defer_finish(&args->trans);
+	xfs_trans_bhold_release(args->trans, leaf_bp);
+	if (error) {
+		xfs_trans_brelse(args->trans, leaf_bp);
+		return error;
 	}
 
+sf_to_leaf:
+
 	if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
 		error = xfs_attr_leaf_addname(args);
 		if (error != -ENOSPC)
-- 
2.7.4

[PATCH v6 16/17] xfsprogs: Add delay ready attr remove routines

[Allison Collins]

This patch modifies the attr remove routines to be delay ready. This
means they no longer roll or commit transactions, but instead return
-EAGAIN to have the calling routine roll and refresh the transaction.
In this series, xfs_attr_remove_args has become xfs_attr_remove_iter,
which uses a sort of state machine like switch to keep track of where it
was when EAGAIN was returned. xfs_attr_node_removename has also been
modified to use the switch, and a  new version of xfs_attr_remove_args
consists of a simple loop to refresh the transaction until the operation
is completed. A helper function xfs_attr_node_shrink has also been
added to help simplify xfs_attr_node_removename and reduce length.

This patch also adds a new struct xfs_delattr_context, which we will use
to keep track of the current state of an attribute operation. The new
xfs_delattr_state enum is used to track various operations that are in
progress so that we know not to repeat them, and resume where we left
off before EAGAIN was returned to cycle out the transaction. Other
members take the place of local variables that need to retain their
values across multiple function recalls.

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
---
 libxfs/xfs_attr.c     | 182 ++++++++++++++++++++++++++++++++++++++------------
 libxfs/xfs_attr.h     |   1 +
 libxfs/xfs_da_btree.h |  24 +++++++
 3 files changed, 164 insertions(+), 43 deletions(-)

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index 4ab97dd..c43d0d9 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -370,11 +370,60 @@ xfs_has_attr(
  */
 int
 xfs_attr_remove_args(
+	struct xfs_da_args	*args)
+{
+	int			error = 0;
+	int			err2 = 0;
+
+	do {
+		error = xfs_attr_remove_iter(args);
+		if (error && error != -EAGAIN)
+			goto out;
+
+		if (args->dac.flags & XFS_DAC_FINISH_TRANS) {
+			args->dac.flags &= ~XFS_DAC_FINISH_TRANS;
+
+			err2 = xfs_defer_finish(&args->trans);
+			if (err2) {
+				error = err2;
+				goto out;
+			}
+		}
+
+		err2 = xfs_trans_roll_inode(&args->trans, args->dp);
+		if (err2) {
+			error = err2;
+			goto out;
+		}
+
+	} while (error == -EAGAIN);
+out:
+	return error;
+}
+
+/*
+ * Remove the attribute specified in @args.
+ * This routine is meant to function as a delayed operation, and may return
+ * -EGAIN when the transaction needs to be rolled.  Calling functions will need
+ * to handle this, and recall the function until a successful error code is
+ * returned.
+ */
+int
+xfs_attr_remove_iter(
 	struct xfs_da_args      *args)
 {
 	struct xfs_inode	*dp = args->dp;
 	int			error;
 
+	/* State machine switch */
+	switch (args->dac.dela_state) {
+	case XFS_DAS_RM_SHRINK:
+	case XFS_DAS_RM_NODE_BLKS:
+		goto node;
+	default:
+		break;
+	}
+
 	if (!xfs_inode_hasattr(dp)) {
 		error = -ENOATTR;
 	} else if (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) {
@@ -383,6 +432,7 @@ xfs_attr_remove_args(
 	} else if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
 		error = xfs_attr_leaf_removename(args);
 	} else {
+node:
 		error = xfs_attr_node_removename(args);
 	}
 
@@ -886,9 +936,8 @@ xfs_attr_leaf_removename(
 		/* bp is gone due to xfs_da_shrink_inode */
 		if (error)
 			return error;
-		error = xfs_defer_finish(&args->trans);
-		if (error)
-			return error;
+
+		args->dac.flags |= XFS_DAC_FINISH_TRANS;
 	}
 	return 0;
 }
@@ -1232,6 +1281,42 @@ xfs_attr_init_unmapstate(
 	return 0;
 }
 
+/*
+ * Shrink an attribute from leaf to shortform
+ */
+STATIC int
+xfs_attr_node_shrink(
+	struct xfs_da_args	*args,
+	struct xfs_da_state     *state)
+{
+	struct xfs_inode	*dp = args->dp;
+	int			error, forkoff;
+	struct xfs_buf		*bp;
+
+	/*
+	 * Have to get rid of the copy of this dabuf in the state.
+	 */
+	ASSERT(state->path.active == 1);
+	ASSERT(state->path.blk[0].bp);
+	state->path.blk[0].bp = NULL;
+
+	error = xfs_attr3_leaf_read(args->trans, args->dp, 0, -1, &bp);
+	if (error)
+		return error;
+
+	forkoff = xfs_attr_shortform_allfit(bp, dp);
+	if (forkoff) {
+		error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
+		/* bp is gone due to xfs_da_shrink_inode */
+		if (error)
+			return error;
+
+		args->dac.flags |= XFS_DAC_FINISH_TRANS;
+	} else
+		xfs_trans_brelse(args->trans, bp);
+
+	return 0;
+}
 
 /*
  * Remove a name from a B-tree attribute list.
@@ -1239,6 +1324,11 @@ xfs_attr_init_unmapstate(
  * This will involve walking down the Btree, and may involve joining
  * leaf nodes and even joining intermediate nodes up to and including
  * the root node (a special case of an intermediate node).
+ *
+ * This routine is meant to function as either an inline or delayed operation,
+ * and may return -EAGAIN when the transaction needs to be rolled.  Calling
+ * functions will need to handle this, and recall the function until a
+ * successful error code is returned.
  */
 STATIC int
 xfs_attr_node_removename(
@@ -1246,15 +1336,28 @@ xfs_attr_node_removename(
 {
 	struct xfs_da_state	*state;
 	struct xfs_da_state_blk	*blk;
-	struct xfs_buf		*bp;
-	int			retval, error, forkoff;
+	int			retval, error;
 	struct xfs_inode	*dp = args->dp;
 
 	trace_xfs_attr_node_removename(args);
+	state = args->dac.da_state;
+	blk = args->dac.blk;
+
+	/* State machine switch */
+	switch (args->dac.dela_state) {
+	case XFS_DAS_RM_NODE_BLKS:
+		goto rm_node_blks;
+	case XFS_DAS_RM_SHRINK:
+		goto rm_shrink;
+	default:
+		break;
+	}
 
 	error = xfs_attr_node_hasname(args, &state);
 	if (error != -EEXIST)
 		goto out;
+	else
+		error = 0;
 
 	/*
 	 * If there is an out-of-line value, de-allocate the blocks.
@@ -1264,18 +1367,36 @@ xfs_attr_node_removename(
 	blk = &state->path.blk[ state->path.active-1 ];
 	ASSERT(blk->bp != NULL);
 	ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC);
+
+	/*
+	 * Store blk and state in the context incase we need to cycle out the
+	 * transaction
+	 */
+	args->dac.blk = blk;
+	args->dac.da_state = state;
+
 	if (args->rmtblkno > 0) {
 		error = xfs_attr_init_unmapstate(args, state);
 		if (error)
 			goto out;
 
-		error = xfs_trans_roll_inode(&args->trans, args->dp);
+		error = xfs_attr_rmtval_invalidate(args);
 		if (error)
 			goto out;
+	}
 
-		error = xfs_attr_rmtval_remove(args);
-		if (error)
-			goto out;
+rm_node_blks:
+
+	args->dac.dela_state = XFS_DAS_RM_NODE_BLKS;
+
+	if (args->rmtblkno > 0) {
+		error = xfs_attr_rmtval_unmap(args);
+
+		if (error) {
+			if (error == -EAGAIN)
+				args->dac.dela_state = XFS_DAS_RM_NODE_BLKS;
+			return error;
+		}
 
 		/*
 		 * Refill the state structure with buffers, the prior calls
@@ -1301,45 +1422,20 @@ xfs_attr_node_removename(
 		error = xfs_da3_join(state);
 		if (error)
 			goto out;
-		error = xfs_defer_finish(&args->trans);
-		if (error)
-			goto out;
-		/*
-		 * Commit the Btree join operation and start a new trans.
-		 */
-		error = xfs_trans_roll_inode(&args->trans, dp);
-		if (error)
-			goto out;
+
+		args->dac.flags |= XFS_DAC_FINISH_TRANS;
+		args->dac.dela_state = XFS_DAS_RM_SHRINK;
+		return -EAGAIN;
 	}
 
+rm_shrink:
+	args->dac.dela_state = XFS_DAS_RM_SHRINK;
+
 	/*
 	 * If the result is small enough, push it all into the inode.
 	 */
-	if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
-		/*
-		 * Have to get rid of the copy of this dabuf in the state.
-		 */
-		ASSERT(state->path.active == 1);
-		ASSERT(state->path.blk[0].bp);
-		state->path.blk[0].bp = NULL;
-
-		error = xfs_attr3_leaf_read(args->trans, args->dp, 0, -1, &bp);
-		if (error)
-			goto out;
-
-		if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
-			error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
-			/* bp is gone due to xfs_da_shrink_inode */
-			if (error)
-				goto out;
-			error = xfs_defer_finish(&args->trans);
-			if (error)
-				goto out;
-		} else
-			xfs_trans_brelse(args->trans, bp);
-	}
-	error = 0;
-
+	if (xfs_bmap_one_block(dp, XFS_ATTR_FORK))
+		error = xfs_attr_node_shrink(args, state);
 out:
 	if (state)
 		xfs_da_state_free(state);
diff --git a/libxfs/xfs_attr.h b/libxfs/xfs_attr.h
index 3b5dad4..f6ac571 100644
--- a/libxfs/xfs_attr.h
+++ b/libxfs/xfs_attr.h
@@ -152,6 +152,7 @@ int xfs_attr_set_args(struct xfs_da_args *args);
 int xfs_attr_remove(struct xfs_inode *dp, struct xfs_name *name, int flags);
 int xfs_has_attr(struct xfs_da_args *args);
 int xfs_attr_remove_args(struct xfs_da_args *args);
+int xfs_attr_remove_iter(struct xfs_da_args *args);
 int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize,
 		  int flags, struct attrlist_cursor_kern *cursor);
 bool xfs_attr_namecheck(const void *name, size_t length);
diff --git a/libxfs/xfs_da_btree.h b/libxfs/xfs_da_btree.h
index bed4f40..fe034d7 100644
--- a/libxfs/xfs_da_btree.h
+++ b/libxfs/xfs_da_btree.h
@@ -43,9 +43,33 @@ enum xfs_dacmp {
 };
 
 /*
+ * Enum values for xfs_delattr_context.da_state
+ */
+enum xfs_delattr_state {
+	XFS_DAS_RM_SHRINK	= 1, /* We are shrinking the tree */
+	XFS_DAS_RM_NODE_BLKS	= 2, /* We are removing node blocks */
+};
+
+/*
+ * Defines for xfs_delattr_context.flags
+ */
+#define	XFS_DAC_FINISH_TRANS	0x1 /* indicates to finish the transaction */
+
+/*
+ * Context used for keeping track of delayed attribute operations
+ */
+struct xfs_delattr_context {
+	struct xfs_da_state	*da_state;
+	struct xfs_da_state_blk *blk;
+	int			flags;
+	enum xfs_delattr_state	dela_state;
+};
+
+/*
  * Structure to ease passing around component names.
  */
 typedef struct xfs_da_args {
+	struct xfs_delattr_context dac; /* context used for delay attr ops */
 	struct xfs_da_geometry *geo;	/* da block geometry */
 	struct xfs_name	name;		/* name, length and argument  flags*/
 	uint8_t		filetype;	/* filetype of inode for directories */
-- 
2.7.4

[PATCH v6 17/17] xfsprogs: Add delay ready attr set routines

[Allison Collins]

This patch modifies the attr set routines to be delay ready. This means
they no longer roll or commit transactions, but instead return -EAGAIN
to have the calling routine roll and refresh the transaction.  In this
series, xfs_attr_set_args has become xfs_attr_set_iter, which uses a
state machine like switch to keep track of where it was when EAGAIN was
returned.

Part of xfs_attr_leaf_addname has been factored out into a new helper
function xfs_attr_leaf_try_add to allow transaction cycling between the
two routines.

Two new helper functions have been added: xfs_attr_rmtval_set_init and
xfs_attr_rmtval_set_blk.  They provide a subset of logic similar to
xfs_attr_rmtval_set, but they store the current block in the delay attr
context to allow the caller to roll the transaction between allocations.
This helps to simplify and consolidate code used by
xfs_attr_leaf_addname and xfs_attr_node_addname

Finally, xfs_attr_set_args has become a simple loop to refresh the
transaction until the operation is completed.

Signed-off-by: Allison Collins <allison.henderson@oracle.com>
---
 libxfs/xfs_attr.c        | 347 +++++++++++++++++++++++++++++------------------
 libxfs/xfs_attr.h        |   1 +
 libxfs/xfs_attr_remote.c |  67 ++++++++-
 libxfs/xfs_attr_remote.h |   4 +
 libxfs/xfs_da_btree.h    |  13 ++
 5 files changed, 301 insertions(+), 131 deletions(-)

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index c43d0d9..263d308 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -57,6 +57,7 @@ STATIC int xfs_attr_node_hasname(xfs_da_args_t *args,
 				 struct xfs_da_state **state);
 STATIC int xfs_attr_fillstate(xfs_da_state_t *state);
 STATIC int xfs_attr_refillstate(xfs_da_state_t *state);
+STATIC int xfs_attr_leaf_try_add(struct xfs_da_args *args, struct xfs_buf *bp);
 
 
 STATIC int
@@ -258,9 +259,86 @@ int
 xfs_attr_set_args(
 	struct xfs_da_args	*args)
 {
+	int			error = 0;
+	int			err2 = 0;
+	struct xfs_buf		*leaf_bp = NULL;
+
+	do {
+		error = xfs_attr_set_iter(args, &leaf_bp);
+		if (error && error != -EAGAIN)
+			goto out;
+
+		if (args->dac.flags & XFS_DAC_FINISH_TRANS) {
+			args->dac.flags &= ~XFS_DAC_FINISH_TRANS;
+
+			err2 = xfs_defer_finish(&args->trans);
+			if (err2) {
+				error = err2;
+				goto out;
+			}
+		}
+
+		err2 = xfs_trans_roll_inode(&args->trans, args->dp);
+		if (err2) {
+			error = err2;
+			goto out;
+		}
+
+		if (leaf_bp) {
+			xfs_trans_bjoin(args->trans, leaf_bp);
+			xfs_trans_bhold(args->trans, leaf_bp);
+		}
+
+	} while (error == -EAGAIN);
+
+out:
+	return error;
+}
+
+/*
+ * Set the attribute specified in @args.
+ * This routine is meant to function as a delayed operation, and may return
+ * -EAGAIN when the transaction needs to be rolled.  Calling functions will need
+ * to handle this, and recall the function until a successful error code is
+ * returned.
+ */
+int
+xfs_attr_set_iter(
+	struct xfs_da_args	*args,
+	struct xfs_buf          **leaf_bp)
+{
 	struct xfs_inode	*dp = args->dp;
-	struct xfs_buf          *leaf_bp = NULL;
-	int			error, error2 = 0;
+	int			error = 0;
+	int			sf_size;
+
+	/* State machine switch */
+	switch (args->dac.dela_state) {
+	case XFS_DAS_SF_TO_LEAF:
+		goto sf_to_leaf;
+	case XFS_DAS_ALLOC_LEAF:
+	case XFS_DAS_FLIP_LFLAG:
+	case XFS_DAS_FOUND_LBLK:
+		goto leaf;
+	case XFS_DAS_FOUND_NBLK:
+	case XFS_DAS_FLIP_NFLAG:
+	case XFS_DAS_ALLOC_NODE:
+	case XFS_DAS_LEAF_TO_NODE:
+		goto node;
+	default:
+		break;
+	}
+
+	/*
+	 * New inodes may not have an attribute fork yet. So set the attribute
+	 * fork appropriately
+	 */
+	if (XFS_IFORK_Q((args->dp)) == 0) {
+		sf_size = sizeof(struct xfs_attr_sf_hdr) +
+		     XFS_ATTR_SF_ENTSIZE_BYNAME(args->name.len, args->valuelen);
+		xfs_bmap_set_attrforkoff(args->dp, sf_size, NULL);
+		args->dp->i_afp = kmem_zone_zalloc(xfs_ifork_zone, 0);
+		args->dp->i_afp->if_flags = XFS_IFEXTENTS;
+	}
 
 	/*
 	 * If the attribute list is non-existent or a shortform list, proceed to
@@ -271,22 +349,20 @@ xfs_attr_set_args(
 	    (dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS &&
 	     dp->i_d.di_anextents == 0)))
 		goto sf_to_leaf;
-
 	/*
 	 * Try to add the attr to the attribute list in the inode.
 	 */
 	error = xfs_attr_try_sf_addname(dp, args);
-	if (error != -ENOSPC) {
-		error2 = xfs_trans_commit(args->trans);
-		args->trans = NULL;
-		return error ? error : error2;
-	}
+
+	/* Should only be 0, -EEXIST or ENOSPC */
+	if (error != -ENOSPC)
+		return error;
 
 	/*
 	 * It won't fit in the shortform, transform to a leaf block.
 	 * GROT: another possible req'mt for a double-split btree op.
 	 */
-	error = xfs_attr_shortform_to_leaf(args, &leaf_bp);
+	error = xfs_attr_shortform_to_leaf(args, leaf_bp);
 	if (error)
 		return error;
 
@@ -294,42 +370,47 @@ xfs_attr_set_args(
 	 * Prevent the leaf buffer from being unlocked so that a
 	 * concurrent AIL push cannot grab the half-baked leaf
 	 * buffer and run into problems with the write verifier.
-	 * Once we're done rolling the transaction we can release
-	 * the hold and add the attr to the leaf.
 	 */
-	xfs_trans_bhold(args->trans, leaf_bp);
-	error = xfs_defer_finish(&args->trans);
-	xfs_trans_bhold_release(args->trans, leaf_bp);
-	if (error) {
-		xfs_trans_brelse(args->trans, leaf_bp);
-		return error;
-	}
+	xfs_trans_bhold(args->trans, *leaf_bp);
+	args->dac.flags |= XFS_DAC_FINISH_TRANS;
+	args->dac.dela_state = XFS_DAS_SF_TO_LEAF;
+	return -EAGAIN;
 
 sf_to_leaf:
 
-	if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
-		error = xfs_attr_leaf_addname(args);
-		if (error != -ENOSPC)
-			return error;
-
-		/*
-		 * Commit that transaction so that the node_addname()
-		 * call can manage its own transactions.
-		 */
-		error = xfs_defer_finish(&args->trans);
-		if (error)
-			return error;
+	/*
+	 * After a shortform to leaf conversion, we need to hold the leaf and
+	 * cylce out the transaction.  When we get back, we need to release
+	 * the leaf.
+	 */
+	if (*leaf_bp != NULL) {
+		xfs_trans_brelse(args->trans, *leaf_bp);
+		*leaf_bp = NULL;
+	}
 
-		/*
-		 * Commit the current trans (including the inode) and
-		 * start a new one.
-		 */
-		error = xfs_trans_roll_inode(&args->trans, dp);
-		if (error)
+	if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
+		error = xfs_attr_leaf_try_add(args, *leaf_bp);
+		switch (error) {
+		case -ENOSPC:
+			args->dac.flags |= XFS_DAC_FINISH_TRANS;
+			args->dac.dela_state = XFS_DAS_LEAF_TO_NODE;
+			return -EAGAIN;
+		case 0:
+			args->dac.dela_state = XFS_DAS_FOUND_LBLK;
+			return -EAGAIN;
+		default:
 			return error;
-
+		}
+leaf:
+		error = xfs_attr_leaf_addname(args);
+		if (error == -ENOSPC) {
+			args->dac.dela_state = XFS_DAS_LEAF_TO_NODE;
+			return -EAGAIN;
+		}
+		return error;
 	}
-
+	args->dac.dela_state = XFS_DAS_LEAF_TO_NODE;
+node:
 	error = xfs_attr_node_addname(args);
 	return error;
 }
@@ -758,27 +839,28 @@ xfs_attr_leaf_try_add(
  *
  * This leaf block cannot have a "remote" value, we only call this routine
  * if bmap_one_block() says there is only one block (ie: no remote blks).
+ *
+ * This routine is meant to function as a delayed operation, and may return
+ * -EAGAIN when the transaction needs to be rolled.  Calling functions will need
+ * to handle this, and recall the function until a successful error code is
+ * returned.
  */
 STATIC int
 xfs_attr_leaf_addname(struct xfs_da_args	*args)
 {
-	int			error, forkoff;
 	struct xfs_buf		*bp = NULL;
+	int			error, forkoff;
 	struct xfs_inode	*dp = args->dp;
 
-	trace_xfs_attr_leaf_addname(args);
-
-	error = xfs_attr_leaf_try_add(args, bp);
-	if (error)
-		return error;
-
-	/*
-	 * Commit the transaction that added the attr name so that
-	 * later routines can manage their own transactions.
-	 */
-	error = xfs_trans_roll_inode(&args->trans, dp);
-	if (error)
-		return error;
+	/* State machine switch */
+	switch (args->dac.dela_state) {
+	case XFS_DAS_FLIP_LFLAG:
+		goto flip_flag;
+	case XFS_DAS_ALLOC_LEAF:
+		goto alloc_leaf;
+	default:
+		break;
+	}
 
 	/*
 	 * If there was an out-of-line value, allocate the blocks we
@@ -787,7 +869,28 @@ xfs_attr_leaf_addname(struct xfs_da_args	*args)
 	 * maximum size of a transaction and/or hit a deadlock.
 	 */
 	if (args->rmtblkno > 0) {
-		error = xfs_attr_rmtval_set(args);
+
+		/* Open coded xfs_attr_rmtval_set without trans handling */
+		error = xfs_attr_rmtval_set_init(args);
+		if (error)
+			return error;
+
+		/*
+		 * Roll through the "value", allocating blocks on disk as
+		 * required.
+		 */
+alloc_leaf:
+		while (args->dac.blkcnt > 0) {
+			error = xfs_attr_rmtval_set_blk(args);
+			if (error)
+				return error;
+
+			args->dac.flags |= XFS_DAC_FINISH_TRANS;
+			args->dac.dela_state = XFS_DAS_ALLOC_LEAF;
+			return -EAGAIN;
+		}
+
+		error = xfs_attr_rmtval_set_value(args);
 		if (error)
 			return error;
 	}
@@ -806,13 +909,10 @@ xfs_attr_leaf_addname(struct xfs_da_args	*args)
 		error = xfs_attr3_leaf_flipflags(args);
 		if (error)
 			return error;
-		/*
-		 * Commit the flag value change and start the next trans in
-		 * series.
-		 */
-		error = xfs_trans_roll_inode(&args->trans, args->dp);
-		if (error)
-			return error;
+
+		args->dac.dela_state = XFS_DAS_FLIP_LFLAG;
+		return -EAGAIN;
+flip_flag:
 
 		/*
 		 * Dismantle the "old" attribute/value pair by removing
@@ -843,34 +943,17 @@ xfs_attr_leaf_addname(struct xfs_da_args	*args)
 		/*
 		 * If the result is small enough, shrink it all into the inode.
 		 */
-		if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
+		forkoff = xfs_attr_shortform_allfit(bp, dp);
+		if (forkoff)
 			error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
-			/* bp is gone due to xfs_da_shrink_inode */
-			if (error)
-				return error;
-			error = xfs_defer_finish(&args->trans);
-			if (error)
-				return error;
-		}
 
-		/*
-		 * Commit the remove and start the next trans in series.
-		 */
-		error = xfs_trans_roll_inode(&args->trans, dp);
+		args->dac.flags |= XFS_DAC_FINISH_TRANS;
 
 	} else if (args->rmtblkno > 0) {
 		/*
 		 * Added a "remote" value, just clear the incomplete flag.
 		 */
 		error = xfs_attr3_leaf_clearflag(args);
-		if (error)
-			return error;
-
-		/*
-		 * Commit the flag value change and start the next trans in
-		 * series.
-		 */
-		error = xfs_trans_roll_inode(&args->trans, args->dp);
 	}
 	return error;
 }
@@ -1019,16 +1102,22 @@ xfs_attr_node_hasname(
  *
  * "Remote" attribute values confuse the issue and atomic rename operations
  * add a whole extra layer of confusion on top of that.
+ *
+ * This routine is meant to function as a delayed operation, and may return
+ * -EAGAIN when the transaction needs to be rolled.  Calling functions will need
+ * to handle this, and recall the function until a successful error code is
+ *returned.
  */
 STATIC int
 xfs_attr_node_addname(
 	struct xfs_da_args	*args)
 {
-	struct xfs_da_state	*state;
+	struct xfs_da_state	*state = NULL;
 	struct xfs_da_state_blk	*blk;
 	struct xfs_inode	*dp;
 	struct xfs_mount	*mp;
-	int			retval, error;
+	int			retval = 0;
+	int			error = 0;
 
 	trace_xfs_attr_node_addname(args);
 
@@ -1037,7 +1126,19 @@ xfs_attr_node_addname(
 	 */
 	dp = args->dp;
 	mp = dp->i_mount;
-restart:
+
+	/* State machine switch */
+	switch (args->dac.dela_state) {
+	case XFS_DAS_FLIP_NFLAG:
+		goto flip_flag;
+	case XFS_DAS_FOUND_NBLK:
+		goto found_nblk;
+	case XFS_DAS_ALLOC_NODE:
+		goto alloc_node;
+	default:
+		break;
+	}
+
 	/*
 	 * Search to see if name already exists, and get back a pointer
 	 * to where it should go.
@@ -1087,19 +1188,13 @@ restart:
 			error = xfs_attr3_leaf_to_node(args);
 			if (error)
 				goto out;
-			error = xfs_defer_finish(&args->trans);
-			if (error)
-				goto out;
 
 			/*
-			 * Commit the node conversion and start the next
-			 * trans in the chain.
+			 * Restart routine from the top.  No need to set  the
+			 * state
 			 */
-			error = xfs_trans_roll_inode(&args->trans, dp);
-			if (error)
-				goto out;
-
-			goto restart;
+			args->dac.flags |= XFS_DAC_FINISH_TRANS;
+			return -EAGAIN;
 		}
 
 		/*
@@ -1111,9 +1206,7 @@ restart:
 		error = xfs_da3_split(state);
 		if (error)
 			goto out;
-		error = xfs_defer_finish(&args->trans);
-		if (error)
-			goto out;
+		args->dac.flags |= XFS_DAC_FINISH_TRANS;
 	} else {
 		/*
 		 * Addition succeeded, update Btree hashvals.
@@ -1128,13 +1221,9 @@ restart:
 	xfs_da_state_free(state);
 	state = NULL;
 
-	/*
-	 * Commit the leaf addition or btree split and start the next
-	 * trans in the chain.
-	 */
-	error = xfs_trans_roll_inode(&args->trans, dp);
-	if (error)
-		goto out;
+	args->dac.dela_state = XFS_DAS_FOUND_NBLK;
+	return -EAGAIN;
+found_nblk:
 
 	/*
 	 * If there was an out-of-line value, allocate the blocks we
@@ -1143,7 +1232,27 @@ restart:
 	 * maximum size of a transaction and/or hit a deadlock.
 	 */
 	if (args->rmtblkno > 0) {
-		error = xfs_attr_rmtval_set(args);
+		/* Open coded xfs_attr_rmtval_set without trans handling */
+		error = xfs_attr_rmtval_set_init(args);
+		if (error)
+			return error;
+
+		/*
+		 * Roll through the "value", allocating blocks on disk as
+		 * required.
+		 */
+alloc_node:
+		while (args->dac.blkcnt > 0) {
+			error = xfs_attr_rmtval_set_blk(args);
+			if (error)
+				return error;
+
+			args->dac.flags |= XFS_DAC_FINISH_TRANS;
+			args->dac.dela_state = XFS_DAS_ALLOC_NODE;
+			return -EAGAIN;
+		}
+
+		error = xfs_attr_rmtval_set_value(args);
 		if (error)
 			return error;
 	}
@@ -1166,10 +1275,9 @@ restart:
 		 * Commit the flag value change and start the next trans in
 		 * series
 		 */
-		error = xfs_trans_roll_inode(&args->trans, args->dp);
-		if (error)
-			goto out;
-
+		args->dac.dela_state = XFS_DAS_FLIP_NFLAG;
+		return -EAGAIN;
+flip_flag:
 		/*
 		 * Dismantle the "old" attribute/value pair by removing
 		 * a "remote" value (if it exists).
@@ -1198,7 +1306,6 @@ restart:
 		error = xfs_da3_node_lookup_int(state, &retval);
 		if (error)
 			goto out;
-
 		/*
 		 * Remove the name and update the hashvals in the tree.
 		 */
@@ -1206,7 +1313,6 @@ restart:
 		ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC);
 		error = xfs_attr3_leaf_remove(blk->bp, args);
 		xfs_da3_fixhashpath(state, &state->path);
-
 		/*
 		 * Check to see if the tree needs to be collapsed.
 		 */
@@ -1214,18 +1320,9 @@ restart:
 			error = xfs_da3_join(state);
 			if (error)
 				goto out;
-			error = xfs_defer_finish(&args->trans);
-			if (error)
-				goto out;
-		}
-
-		/*
-		 * Commit and start the next trans in the chain.
-		 */
-		error = xfs_trans_roll_inode(&args->trans, dp);
-		if (error)
-			goto out;
 
+			args->dac.flags |= XFS_DAC_FINISH_TRANS;
+		}
 	} else if (args->rmtblkno > 0) {
 		/*
 		 * Added a "remote" value, just clear the incomplete flag.
@@ -1233,14 +1330,6 @@ restart:
 		error = xfs_attr3_leaf_clearflag(args);
 		if (error)
 			goto out;
-
-		 /*
-		  * Commit the flag value change and start the next trans in
-		  * series.
-		  */
-		error = xfs_trans_roll_inode(&args->trans, args->dp);
-		if (error)
-			goto out;
 	}
 	retval = error = 0;
 
diff --git a/libxfs/xfs_attr.h b/libxfs/xfs_attr.h
index f6ac571..0ba80c9 100644
--- a/libxfs/xfs_attr.h
+++ b/libxfs/xfs_attr.h
@@ -149,6 +149,7 @@ int xfs_attr_get(struct xfs_inode *ip, struct xfs_name *name,
 int xfs_attr_set(struct xfs_inode *dp, struct xfs_name *name,
 		 unsigned char *value, int valuelen, int flags);
 int xfs_attr_set_args(struct xfs_da_args *args);
+int xfs_attr_set_iter(struct xfs_da_args *args, struct xfs_buf **leaf_bp);
 int xfs_attr_remove(struct xfs_inode *dp, struct xfs_name *name, int flags);
 int xfs_has_attr(struct xfs_da_args *args);
 int xfs_attr_remove_args(struct xfs_da_args *args);
diff --git a/libxfs/xfs_attr_remote.c b/libxfs/xfs_attr_remote.c
index a209b00..98e3d64 100644
--- a/libxfs/xfs_attr_remote.c
+++ b/libxfs/xfs_attr_remote.c
@@ -425,7 +425,7 @@ xfs_attr_rmtval_get(
  * Find a "hole" in the attribute address space large enough for us to drop the
  * new attribute's value into
  */
-STATIC int
+int
 xfs_attr_rmt_find_hole(
 	struct xfs_da_args	*args)
 {
@@ -452,7 +452,7 @@ xfs_attr_rmt_find_hole(
 	return 0;
 }
 
-STATIC int
+int
 xfs_attr_rmtval_set_value(
 	struct xfs_da_args	*args)
 {
@@ -585,6 +585,69 @@ xfs_attr_rmtval_set(
 }
 
 /*
+ * Find a hole for the attr and store it in the delayed attr context.  This
+ * initializes the context to roll through allocating an attr extent for a
+ * delayed attr operation
+ */
+int
+xfs_attr_rmtval_set_init(
+	struct xfs_da_args	*args)
+{
+	struct xfs_bmbt_irec	*map = &args->dac.map;
+	int error;
+
+	args->dac.lblkno = 0;
+	args->dac.lfileoff = 0;
+	args->dac.blkcnt = 0;
+	args->rmtblkcnt = 0;
+	args->rmtblkno = 0;
+	memset(map, 0, sizeof(struct xfs_bmbt_irec));
+
+	error = xfs_attr_rmt_find_hole(args);
+	if (error)
+		return error;
+
+	args->dac.blkcnt = args->rmtblkcnt;
+	args->dac.lblkno = args->rmtblkno;
+
+	return error;
+}
+
+/*
+ * Write one block of the value associated with an attribute into the
+ * out-of-line buffer that we have defined for it. This is similar to a subset
+ * of xfs_attr_rmtval_set, but records the current block to the delayed attr
+ * context, and leaves transaction handling to the caller.
+ */
+int
+xfs_attr_rmtval_set_blk(
+	struct xfs_da_args	*args)
+{
+	struct xfs_inode	*dp = args->dp;
+	struct xfs_bmbt_irec	*map = &args->dac.map;
+	int nmap;
+	int error;
+
+	nmap = 1;
+	error = xfs_bmapi_write(args->trans, dp,
+		  (xfs_fileoff_t)args->dac.lblkno,
+		  args->dac.blkcnt, XFS_BMAPI_ATTRFORK,
+		  args->total, map, &nmap);
+	if (error)
+		return error;
+
+	ASSERT(nmap == 1);
+	ASSERT((map->br_startblock != DELAYSTARTBLOCK) &&
+	       (map->br_startblock != HOLESTARTBLOCK));
+
+	/* roll attribute extent map forwards */
+	args->dac.lblkno += map->br_blockcount;
+	args->dac.blkcnt -= map->br_blockcount;
+
+	return 0;
+}
+
+/*
  * Remove the value associated with an attribute by deleting the
  * out-of-line buffer that it is stored on.
  */
diff --git a/libxfs/xfs_attr_remote.h b/libxfs/xfs_attr_remote.h
index 7ab3770..ab03519 100644
--- a/libxfs/xfs_attr_remote.h
+++ b/libxfs/xfs_attr_remote.h
@@ -13,4 +13,8 @@ int xfs_attr_rmtval_set(struct xfs_da_args *args);
 int xfs_attr_rmtval_remove(struct xfs_da_args *args);
 int xfs_attr_rmtval_invalidate(struct xfs_da_args *args);
 int xfs_attr_rmtval_unmap(struct xfs_da_args *args);
+int xfs_attr_rmt_find_hole(struct xfs_da_args *args);
+int xfs_attr_rmtval_set_value(struct xfs_da_args *args);
+int xfs_attr_rmtval_set_blk(struct xfs_da_args *args);
+int xfs_attr_rmtval_set_init(struct xfs_da_args *args);
 #endif /* __XFS_ATTR_REMOTE_H__ */
diff --git a/libxfs/xfs_da_btree.h b/libxfs/xfs_da_btree.h
index fe034d7..1e99cbc 100644
--- a/libxfs/xfs_da_btree.h
+++ b/libxfs/xfs_da_btree.h
@@ -48,6 +48,14 @@ enum xfs_dacmp {
 enum xfs_delattr_state {
 	XFS_DAS_RM_SHRINK	= 1, /* We are shrinking the tree */
 	XFS_DAS_RM_NODE_BLKS	= 2, /* We are removing node blocks */
+	XFS_DAS_SF_TO_LEAF	= 3, /* Converted short form to leaf */
+	XFS_DAS_FOUND_LBLK	= 4, /* We found leaf blk for attr */
+	XFS_DAS_LEAF_TO_NODE	= 5, /* Converted leaf to node */
+	XFS_DAS_FOUND_NBLK	= 6, /* We found node blk for attr */
+	XFS_DAS_ALLOC_LEAF	= 7, /* We are allocating leaf blocks */
+	XFS_DAS_FLIP_LFLAG	= 8, /* Flipped leaf INCOMPLETE attr flag */
+	XFS_DAS_ALLOC_NODE	= 9, /* We are allocating node blocks */
+	XFS_DAS_FLIP_NFLAG	= 10,/* Flipped node INCOMPLETE attr flag */
 };
 
 /*
@@ -59,8 +67,13 @@ enum xfs_delattr_state {
  * Context used for keeping track of delayed attribute operations
  */
 struct xfs_delattr_context {
+	struct xfs_bmbt_irec	map;
+	struct xfs_buf		*leaf_bp;
+	xfs_fileoff_t		lfileoff;
 	struct xfs_da_state	*da_state;
 	struct xfs_da_state_blk *blk;
+	xfs_dablk_t		lblkno;
+	int			blkcnt;
 	int			flags;
 	enum xfs_delattr_state	dela_state;
 };
-- 
2.7.4