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From: Allison Henderson <allison.henderson@oracle.com>
To: linux-xfs@vger.kernel.org
Subject: [PATCH v8 03/28] xfs: Add attibute set and helper functions
Date: Tue, 28 Aug 2018 12:22:16 -0700	[thread overview]
Message-ID: <1535484161-11059-4-git-send-email-allison.henderson@oracle.com> (raw)
In-Reply-To: <1535484161-11059-1-git-send-email-allison.henderson@oracle.com>

This patch adds xfs_attr_set_args and xfs_bmap_set_attrforkoff.
These sub-routines set the attributes specified in @args.
We will use this later for setting parent pointers as a deferred
attribute operation.

Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
---
 fs/xfs/libxfs/xfs_attr.c | 152 ++++++++++++++++++++++++++++-------------------
 fs/xfs/libxfs/xfs_attr.h |   1 +
 fs/xfs/libxfs/xfs_bmap.c |  49 +++++++++------
 fs/xfs/libxfs/xfs_bmap.h |   1 +
 4 files changed, 122 insertions(+), 81 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index f0675be..bc70151 100644
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -227,6 +227,94 @@ xfs_attr_try_sf_addname(
 	return error;
 }
 
+/*
+ * Set the attribute specified in @args.
+ */
+int
+xfs_attr_set_args(
+	struct xfs_da_args	*args,
+	struct xfs_buf          **leaf_bp)
+{
+	struct xfs_inode	*dp = args->dp;
+	int			error;
+	int			sf_size;
+
+	/*
+	 * New inodes setting the parent pointer attr will
+	 * 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->namelen, args->valuelen);
+		xfs_bmap_set_attrforkoff(args->dp, sf_size, NULL);
+		args->dp->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP);
+		args->dp->i_afp->if_flags = XFS_IFEXTENTS;
+	}
+
+	/*
+	 * If the attribute list is non-existent or a shortform list,
+	 * upgrade it to a single-leaf-block attribute list.
+	 */
+	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)) {
+
+		/*
+		 * 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)
+			goto out;
+
+		/*
+		 * 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)
+			goto out;
+
+		/*
+		 * 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.
+		 */
+		xfs_trans_bhold(args->trans, *leaf_bp);
+
+		error = xfs_defer_finish(&args->trans);
+		if (error)
+			goto out;
+
+		/*
+		 * Commit the leaf transformation.  We'll need another
+		 * (linked) transaction to add the new attribute to the
+		 * leaf.
+		 */
+		error = xfs_trans_roll_inode(&args->trans, dp);
+		if (error)
+			goto out;
+		xfs_trans_bjoin(args->trans, *leaf_bp);
+		*leaf_bp = NULL;
+	}
+
+	if (xfs_bmap_one_block(dp, XFS_ATTR_FORK))
+		error = xfs_attr_leaf_addname(args);
+	else
+		error = xfs_attr_node_addname(args);
+	if (error)
+		goto out;
+
+out:
+	return error;
+}
+
 int
 xfs_attr_set(
 	struct xfs_inode	*dp,
@@ -240,7 +328,7 @@ xfs_attr_set(
 	struct xfs_da_args	args;
 	struct xfs_trans_res	tres;
 	int			rsvd = (flags & ATTR_ROOT) != 0;
-	int			error, err2, local;
+	int			error, local;
 
 	XFS_STATS_INC(mp, xs_attr_set);
 
@@ -298,67 +386,7 @@ xfs_attr_set(
 	}
 
 	xfs_trans_ijoin(args.trans, dp, 0);
-
-	/*
-	 * If the attribute list is non-existent or a shortform list,
-	 * upgrade it to a single-leaf-block attribute list.
-	 */
-	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)) {
-
-		/*
-		 * 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) {
-			err2 = xfs_trans_commit(args.trans);
-			error = error ? error : err2;
-
-			xfs_iunlock(dp, XFS_ILOCK_EXCL);
-			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)
-			goto out;
-		/*
-		 * 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.
-		 */
-		xfs_trans_bhold(args.trans, leaf_bp);
-		error = xfs_defer_finish(&args.trans);
-		if (error)
-			goto out;
-
-		/*
-		 * Commit the leaf transformation.  We'll need another (linked)
-		 * transaction to add the new attribute to the leaf, which
-		 * means that we have to hold & join the leaf buffer here too.
-		 */
-		error = xfs_trans_roll_inode(&args.trans, dp);
-		if (error)
-			goto out;
-		xfs_trans_bjoin(args.trans, leaf_bp);
-		leaf_bp = NULL;
-	}
-
-	if (xfs_bmap_one_block(dp, XFS_ATTR_FORK))
-		error = xfs_attr_leaf_addname(&args);
-	else
-		error = xfs_attr_node_addname(&args);
+	error = xfs_attr_set_args(&args, &leaf_bp);
 	if (error)
 		goto out;
 
diff --git a/fs/xfs/libxfs/xfs_attr.h b/fs/xfs/libxfs/xfs_attr.h
index 033ff8c..f608ac8 100644
--- a/fs/xfs/libxfs/xfs_attr.h
+++ b/fs/xfs/libxfs/xfs_attr.h
@@ -140,6 +140,7 @@ int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name,
 		 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_set_args(struct xfs_da_args *args, struct xfs_buf **leaf_bp);
 int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags);
 int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize,
 		  int flags, struct attrlist_cursor_kern *cursor);
diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
index 5648a17..85b803b 100644
--- a/fs/xfs/libxfs/xfs_bmap.c
+++ b/fs/xfs/libxfs/xfs_bmap.c
@@ -1009,6 +1009,34 @@ xfs_bmap_add_attrfork_local(
 	return -EFSCORRUPTED;
 }
 
+/* Set an inode attr fork off based on the format */
+int
+xfs_bmap_set_attrforkoff(
+	struct xfs_inode	*ip,
+	int			size,
+	int			*version)
+{
+	switch (ip->i_d.di_format) {
+	case XFS_DINODE_FMT_DEV:
+		ip->i_d.di_forkoff = roundup(sizeof(xfs_dev_t), 8) >> 3;
+		break;
+	case XFS_DINODE_FMT_LOCAL:
+	case XFS_DINODE_FMT_EXTENTS:
+	case XFS_DINODE_FMT_BTREE:
+		ip->i_d.di_forkoff = xfs_attr_shortform_bytesfit(ip, size);
+		if (!ip->i_d.di_forkoff)
+			ip->i_d.di_forkoff = xfs_default_attroffset(ip) >> 3;
+		else if ((ip->i_mount->m_flags & XFS_MOUNT_ATTR2) && version)
+			*version = 2;
+		break;
+	default:
+		ASSERT(0);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 /*
  * Convert inode from non-attributed to attributed.
  * Must not be in a transaction, ip must not be locked.
@@ -1060,26 +1088,9 @@ xfs_bmap_add_attrfork(
 
 	xfs_trans_ijoin(tp, ip, 0);
 	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
-
-	switch (ip->i_d.di_format) {
-	case XFS_DINODE_FMT_DEV:
-		ip->i_d.di_forkoff = roundup(sizeof(xfs_dev_t), 8) >> 3;
-		break;
-	case XFS_DINODE_FMT_LOCAL:
-	case XFS_DINODE_FMT_EXTENTS:
-	case XFS_DINODE_FMT_BTREE:
-		ip->i_d.di_forkoff = xfs_attr_shortform_bytesfit(ip, size);
-		if (!ip->i_d.di_forkoff)
-			ip->i_d.di_forkoff = xfs_default_attroffset(ip) >> 3;
-		else if (mp->m_flags & XFS_MOUNT_ATTR2)
-			version = 2;
-		break;
-	default:
-		ASSERT(0);
-		error = -EINVAL;
+	error = xfs_bmap_set_attrforkoff(ip, size, &version);
+	if (error)
 		goto trans_cancel;
-	}
-
 	ASSERT(ip->i_afp == NULL);
 	ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP);
 	ip->i_afp->if_flags = XFS_IFEXTENTS;
diff --git a/fs/xfs/libxfs/xfs_bmap.h b/fs/xfs/libxfs/xfs_bmap.h
index b6e9b63..488dc88 100644
--- a/fs/xfs/libxfs/xfs_bmap.h
+++ b/fs/xfs/libxfs/xfs_bmap.h
@@ -183,6 +183,7 @@ void	xfs_trim_extent(struct xfs_bmbt_irec *irec, xfs_fileoff_t bno,
 		xfs_filblks_t len);
 void	xfs_trim_extent_eof(struct xfs_bmbt_irec *, struct xfs_inode *);
 int	xfs_bmap_add_attrfork(struct xfs_inode *ip, int size, int rsvd);
+int	xfs_bmap_set_attrforkoff(struct xfs_inode *ip, int size, int *version);
 void	xfs_bmap_local_to_extents_empty(struct xfs_inode *ip, int whichfork);
 void	__xfs_bmap_add_free(struct xfs_trans *tp, xfs_fsblock_t bno,
 		xfs_filblks_t len, struct xfs_owner_info *oinfo,
-- 
2.7.4

  parent reply	other threads:[~2018-08-28 23:17 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-28 19:22 [PATCH v8 00/28] Parent Pointers v8 Allison Henderson
2018-08-28 19:22 ` [PATCH v8 01/28] xfs: Move fs/xfs/xfs_attr.h to fs/xfs/libxfs/xfs_attr.h Allison Henderson
2018-08-28 19:22 ` [PATCH v8 02/28] xfs: Add helper function xfs_attr_try_sf_addname Allison Henderson
2018-08-28 19:22 ` Allison Henderson [this message]
2018-08-28 19:22 ` [PATCH v8 04/28] xfs: Add attibute remove and helper functions Allison Henderson
2018-08-28 19:22 ` [PATCH v8 05/28] xfs: Hold inode locks in xfs_ialloc Allison Henderson
2018-08-28 19:22 ` [PATCH v8 06/28] xfs: Add trans toggle to attr routines Allison Henderson
2018-08-28 19:22 ` [PATCH v8 07/28] xfs: Set up infastructure for deferred attribute operations Allison Henderson
2018-08-28 19:22 ` [PATCH v8 08/28] xfs: Add xfs_attr_set_deferred and xfs_attr_remove_deferred Allison Henderson
2018-08-28 19:22 ` [PATCH v8 09/28] xfs: Add xfs_has_attr and subroutines Allison Henderson
2018-08-28 19:22 ` [PATCH v8 10/28] xfs: Add attr context to log item Allison Henderson
2018-08-28 19:22 ` [PATCH v8 11/28] xfs: Roll delayed attr operations by returning EAGAIN Allison Henderson
2018-08-28 19:22 ` [PATCH v8 12/28] xfs: Remove roll_trans boolean Allison Henderson
2018-08-28 19:22 ` [PATCH v8 13/28] xfs: Remove all strlen calls in all xfs_attr_* functions for attr names Allison Henderson
2018-08-28 19:22 ` [PATCH v8 14/28] xfs: get directory offset when adding directory name Allison Henderson
2018-08-28 19:22 ` [PATCH v8 15/28] xfs: get directory offset when removing " Allison Henderson
2018-08-28 19:22 ` [PATCH v8 16/28] xfs: get directory offset when replacing a " Allison Henderson
2018-08-28 19:22 ` [PATCH v8 17/28] xfs: add parent pointer support to attribute code Allison Henderson
2018-08-28 19:22 ` [PATCH v8 18/28] xfs: define parent pointer xattr format Allison Henderson
2018-08-28 19:22 ` [PATCH v8 19/28] xfs: extent transaction reservations for parent attributes Allison Henderson
2018-08-28 19:22 ` [PATCH v8 20/28] xfs: parent pointer attribute creation Allison Henderson
2018-08-28 19:22 ` [PATCH v8 21/28] xfs: add parent attributes to link Allison Henderson
2018-08-28 19:22 ` [PATCH v8 22/28] xfs: remove parent pointers in unlink Allison Henderson
2018-08-28 19:22 ` [PATCH v8 23/28] xfs: Add parent pointers to rename Allison Henderson
2018-09-03  3:20   ` Dave Chinner
2018-09-03  5:28     ` Amir Goldstein
2018-09-04 18:31       ` Allison Henderson
2018-09-04 18:31     ` Allison Henderson
2018-08-28 19:22 ` [PATCH v8 24/28] xfs: Add the parent pointer support to the superblock version 5 Allison Henderson
2018-08-28 19:22 ` [PATCH v8 25/28] xfs: Add helper function xfs_attr_list_context_init Allison Henderson
2018-08-28 19:22 ` [PATCH v8 26/28] xfs: Increase XFS_DEFER_OPS_NR_INODES to 4 Allison Henderson
2018-08-28 19:22 ` [PATCH v8 27/28] xfs: Add parent pointer ioctl Allison Henderson
2018-08-28 19:22 ` [PATCH v8 28/28] xfs: Add delayed attributes error tag Allison Henderson
2018-09-03  1:20 ` [PATCH v8 00/28] Parent Pointers v8 Dave Chinner
2018-09-03  1:40   ` Dave Chinner
2018-09-04 18:31     ` Allison Henderson
2018-09-03  5:41 ` Dave Chinner
2018-09-04 18:32   ` Allison Henderson

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