[v7,11/20] xfsprogs: Factor out xfs_attr_rmtval_invalidate

Commit Message

Allison Henderson Feb. 23, 2020, 2:05 a.m. UTC

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 <[e-mail]>
Reviewed-by: Brian Foster <[e-mail]>
Reviewed-by: Darrick J. Wong <[e-mail]>
---
 libxfs/xfs_attr_remote.c | 26 +++++++++++++++++++++-----
 libxfs/xfs_attr_remote.h |  2 +-
 2 files changed, 22 insertions(+), 6 deletions(-)

Patch

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__ */