[PATCH 04/38] xfs: create a helper to compute the blockcount of a max sized remote value

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From: Darrick J. Wong <djwong@xxxxxxxxxx>

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 <djwong@xxxxxxxxxx>
Reviewed-by: Andrey Albershteyn <aalbersh@xxxxxxxxxx>
 libxfs/xfs_attr.c        |    2 +-
 libxfs/xfs_attr_remote.h |    6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index 04cb39f31bdc..3058e609c514 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -1038,7 +1038,7 @@ xfs_attr_set(
 		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);
diff --git a/libxfs/xfs_attr_remote.h b/libxfs/xfs_attr_remote.h
index c64b04f91caf..e3c6c7d774bf 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);

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