[PATCH 01/28] xfs: create individual inode alloc. helper

[Brian Foster]

Inode allocation from sparse inode records must filter the ir_free mask
against ir_holemask.  In preparation for this requirement, create a
helper to allocate an individual inode from an inode record.

Signed-off-by: Brian Foster <bfoster at redhat.com>
---
 libxfs/xfs_ialloc.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/libxfs/xfs_ialloc.c b/libxfs/xfs_ialloc.c
index 2b4e4e0..a1cf1dd 100644
--- a/libxfs/xfs_ialloc.c
+++ b/libxfs/xfs_ialloc.c
@@ -727,6 +727,16 @@ xfs_ialloc_get_rec(
 }
 
 /*
+ * Return the offset of the first free inode in the record.
+ */
+STATIC int
+xfs_inobt_first_free_inode(
+	struct xfs_inobt_rec_incore	*rec)
+{
+	return xfs_lowbit64(rec->ir_free);
+}
+
+/*
  * Allocate an inode using the inobt-only algorithm.
  */
 STATIC int
@@ -956,7 +966,7 @@ newino:
 	}
 
 alloc_inode:
-	offset = xfs_lowbit64(rec.ir_free);
+	offset = xfs_inobt_first_free_inode(&rec);
 	ASSERT(offset >= 0);
 	ASSERT(offset < XFS_INODES_PER_CHUNK);
 	ASSERT((XFS_AGINO_TO_OFFSET(mp, rec.ir_startino) %
@@ -1205,7 +1215,7 @@ xfs_dialloc_ag(
 	if (error)
 		goto error_cur;
 
-	offset = xfs_lowbit64(rec.ir_free);
+	offset = xfs_inobt_first_free_inode(&rec);
 	ASSERT(offset >= 0);
 	ASSERT(offset < XFS_INODES_PER_CHUNK);
 	ASSERT((XFS_AGINO_TO_OFFSET(mp, rec.ir_startino) %
-- 
1.9.3