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From: Allison Collins <allison.henderson@oracle.com>
To: linux-xfs@vger.kernel.org
Subject: [PATCH v3 05/19] xfs: Factor out new helper functions xfs_attr_rmtval_set
Date: Thu,  5 Sep 2019 15:18:23 -0700	[thread overview]
Message-ID: <20190905221837.17388-6-allison.henderson@oracle.com> (raw)
In-Reply-To: <20190905221837.17388-1-allison.henderson@oracle.com>

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>
---
 fs/xfs/libxfs/xfs_attr_remote.c | 72 +++++++++++++++++++++++++++++++----------
 fs/xfs/libxfs/xfs_attr_remote.h |  3 +-
 2 files changed, 57 insertions(+), 18 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_attr_remote.c b/fs/xfs/libxfs/xfs_attr_remote.c
index db9247a..080a284 100644
--- a/fs/xfs/libxfs/xfs_attr_remote.c
+++ b/fs/xfs/libxfs/xfs_attr_remote.c
@@ -21,6 +21,7 @@
 #include "xfs_attr.h"
 #include "xfs_trace.h"
 #include "xfs_error.h"
+#include "xfs_attr_remote.h"
 
 #define ATTR_RMTVALUE_MAPSIZE	1	/* # of map entries at once */
 
@@ -432,34 +433,20 @@ xfs_attr_rmtval_set(
 	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);
 
-	/*
-	 * 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.
-	 */
-	blkcnt = xfs_attr3_rmt_blocks(mp, args->rmtvaluelen);
-	error = xfs_bmap_first_unused(args->trans, args->dp, blkcnt, &lfileoff,
-						   XFS_ATTR_FORK);
+	error = xfs_attr_rmt_find_hole(args);
 	if (error)
 		return error;
 
-	args->rmtblkno = lblkno = (xfs_dablk_t)lfileoff;
-	args->rmtblkcnt = blkcnt;
-
+	blkcnt = args->rmtblkcnt;
+	lblkno = (xfs_dablk_t)args->rmtblkno;
 	/*
 	 * Roll through the "value", allocating blocks on disk as required.
 	 */
@@ -500,6 +487,57 @@ xfs_attr_rmtval_set(
 			return error;
 	}
 
+	error = xfs_attr_rmtval_set_value(args);
+	return error;
+}
+
+
+/*
+ * Find a "hole" in the attribute address space large enough for us to drop the
+ * new attribute's value into
+ */
+int
+xfs_attr_rmt_find_hole(
+	struct xfs_da_args	*args)
+{
+	struct xfs_inode        *dp = args->dp;
+	struct xfs_mount	*mp = dp->i_mount;
+	int			error;
+	int			blkcnt;
+	xfs_fileoff_t		lfileoff = args->rmtblkno;
+
+	/*
+	 * 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,
+						   XFS_ATTR_FORK);
+	if (error)
+		return error;
+
+	args->rmtblkno = (xfs_dablk_t)lfileoff;
+	args->rmtblkcnt = blkcnt;
+
+	return 0;
+}
+
+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
 	 * already-allocated blocks.  Blocks are written synchronously
diff --git a/fs/xfs/libxfs/xfs_attr_remote.h b/fs/xfs/libxfs/xfs_attr_remote.h
index 9d20b66..cd7670d 100644
--- a/fs/xfs/libxfs/xfs_attr_remote.h
+++ b/fs/xfs/libxfs/xfs_attr_remote.h
@@ -11,5 +11,6 @@ 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_set_value(struct xfs_da_args *args);
+int xfs_attr_rmt_find_hole(struct xfs_da_args *args);
 #endif /* __XFS_ATTR_REMOTE_H__ */
-- 
2.7.4


  parent reply	other threads:[~2019-09-05 22:19 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-05 22:18 [PATCH v3 00/19] Delayed Attributes Allison Collins
2019-09-05 22:18 ` [PATCH v3 01/19] xfs: Replace attribute parameters with struct xfs_name Allison Collins
2019-09-18 16:43   ` Brian Foster
2019-09-18 18:09     ` Allison Collins
2019-09-18 18:14       ` Brian Foster
2019-09-18 18:48         ` Allison Collins
2019-09-18 19:06           ` Darrick J. Wong
2019-09-05 22:18 ` [PATCH v3 02/19] xfs: Embed struct xfs_name in xfs_da_args Allison Collins
2019-09-18 16:44   ` Brian Foster
2019-09-18 16:47     ` Christoph Hellwig
2019-09-18 19:55     ` Allison Collins
2019-09-05 22:18 ` [PATCH v3 03/19] xfs: Add xfs_dabuf defines Allison Collins
2019-09-06  3:37   ` Darrick J. Wong
2019-09-05 22:18 ` [PATCH v3 04/19] xfs: Add xfs_has_attr and subroutines Allison Collins
2019-09-19 17:47   ` Brian Foster
2019-09-19 23:51     ` Allison Collins
2019-09-20 12:32       ` Brian Foster
2019-09-05 22:18 ` Allison Collins [this message]
2019-09-20 13:49   ` [PATCH v3 05/19] xfs: Factor out new helper functions xfs_attr_rmtval_set Brian Foster
2019-09-21  7:29     ` Allison Collins
2019-09-05 22:18 ` [PATCH v3 06/19] xfs: Factor up trans handling in xfs_attr3_leaf_flipflags Allison Collins
2019-09-20 13:49   ` Brian Foster
2019-09-21  7:00     ` Allison Collins
2019-09-05 22:18 ` [PATCH v3 07/19] xfs: Factor out xfs_attr_leaf_addname helper Allison Collins
2019-09-20 13:49   ` Brian Foster
2019-09-21  7:00     ` Allison Collins
2019-09-05 22:18 ` [PATCH v3 08/19] xfs: Factor up commit from xfs_attr_try_sf_addname Allison Collins
2019-09-20 13:50   ` Brian Foster
2019-09-21  1:25     ` Allison Collins
2019-09-23 12:04       ` Brian Foster
2019-09-05 22:18 ` [PATCH v3 09/19] xfs: Factor up trans roll from xfs_attr3_leaf_setflag Allison Collins
2019-09-20 13:50   ` Brian Foster
2019-09-05 22:18 ` [PATCH v3 10/19] xfs: Add xfs_attr3_leaf helper functions Allison Collins
2019-09-20 13:50   ` Brian Foster
2019-09-21  1:03     ` Allison Collins
2019-09-05 22:18 ` [PATCH v3 11/19] xfs: Factor out xfs_attr_rmtval_invalidate Allison Collins
2019-09-20 13:51   ` Brian Foster
2019-09-20 22:50     ` Allison Collins
2019-09-05 22:18 ` [PATCH v3 12/19] xfs: Factor up trans roll in xfs_attr3_leaf_clearflag Allison Collins
2019-09-20 13:51   ` Brian Foster
2019-09-20 22:49     ` Allison Collins
2019-09-05 22:18 ` [PATCH v3 13/19] xfs: Add delay context to xfs_da_args Allison Collins
2019-09-20 13:51   ` Brian Foster
2019-09-20 22:48     ` Allison Collins
2019-09-05 22:18 ` [PATCH v3 14/19] xfs: Add delayed attribute routines Allison Collins
2019-09-20 15:28   ` Brian Foster
2019-09-20 19:12     ` Allison Collins
2019-09-23 12:04       ` Brian Foster
2019-09-24  5:53         ` Allison Collins
2019-09-24 10:05           ` Brian Foster
2019-09-25  4:36             ` Darrick J. Wong
2019-09-25 11:53               ` Brian Foster
2019-09-25 20:28                 ` Allison Collins
2019-09-05 22:18 ` [PATCH v3 15/19] xfs: Set up infastructure for deferred attribute operations Allison Collins
2019-09-05 22:18 ` [PATCH v3 16/19] xfs: Add xfs_attr_set_deferred and xfs_attr_remove_deferred Allison Collins
2019-09-05 22:18 ` [PATCH v3 17/19] xfs: Add feature bit XFS_SB_FEAT_INCOMPAT_LOG_DELATTR Allison Collins
2019-09-05 22:18 ` [PATCH v3 18/19] xfs: Enable delayed attributes Allison Collins
2019-09-05 22:18 ` [PATCH v3 19/19] xfs_io: Add delayed attributes error tag Allison Collins
2019-09-16 12:27 ` [PATCH v3 00/19] Delayed Attributes Brian Foster
2019-09-16 18:41   ` Allison Collins
2019-09-16 19:23     ` Brian Foster
2019-09-16 20:42       ` Allison Collins
2019-09-17  4:43         ` Darrick J. Wong
2019-09-17 12:17         ` Brian Foster

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