[104/115] xfs: create a helper to compute the blockcount of a max sized remote value

Commit Message

Darrick J. Wong July 30, 2024, 12:50 a.m. UTC

From: Darrick J. Wong <[e-mail]>

Source kernel commit: 204a26aa1d5a891154c9275fe4022e28793ca112

Create a helper function to compute the number of fsblocks needed to
store a maximally-sized extended attribute value.

Signed-off-by: Darrick J. Wong <[e-mail]>
Reviewed-by: Andrey Albershteyn <[e-mail]>
Reviewed-by: Christoph Hellwig <[e-mail]>
---
 libxfs/xfs_attr.c        |    2 +-
 libxfs/xfs_attr_remote.h |    6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

Patch

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index 52fcb1c4c..99648d78c 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -1035,7 +1035,7 @@  xfs_attr_set(
 		break;
 	case XFS_ATTRUPDATE_REMOVE:
 		XFS_STATS_INC(mp, xs_attr_remove);
-		rmt_blks = xfs_attr3_rmt_blocks(mp, XFS_XATTR_SIZE_MAX);
+		rmt_blks = xfs_attr3_max_rmt_blocks(mp);
 		break;
 	}
 
diff --git a/libxfs/xfs_attr_remote.h b/libxfs/xfs_attr_remote.h
index c64b04f91..e3c6c7d77 100644
--- a/libxfs/xfs_attr_remote.h
+++ b/libxfs/xfs_attr_remote.h
@@ -8,6 +8,12 @@ 
 
 unsigned int xfs_attr3_rmt_blocks(struct xfs_mount *mp, unsigned int attrlen);
 
+/* Number of rmt blocks needed to store the maximally sized attr value */
+static inline unsigned int xfs_attr3_max_rmt_blocks(struct xfs_mount *mp)
+{
+	return xfs_attr3_rmt_blocks(mp, XFS_XATTR_SIZE_MAX);
+}
+
 int xfs_attr_rmtval_get(struct xfs_da_args *args);
 int xfs_attr_rmtval_stale(struct xfs_inode *ip, struct xfs_bmbt_irec *map,
 		xfs_buf_flags_t incore_flags);