[PATCH v4 12/22] xfs: Update xfs_inode_alloc_unitsize_fsb() for forcealign

[John Garry <john.g.garry@xxxxxxxxxx>]

For forcealign enabled, the allocation unit size is in ip->i_extsize, and
this must never be zero.

Signed-off-by: John Garry <john.g.garry@xxxxxxxxxx>
---
 fs/xfs/xfs_inode.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index a6cd5f1f2680..9c0ae5c3682e 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -4281,6 +4281,8 @@ unsigned int
 xfs_inode_alloc_unitsize_fsb(
 	struct xfs_inode	*ip)
 {
+	if (xfs_inode_has_forcealign(ip))
+		return ip->i_extsize;
 	if (XFS_IS_REALTIME_INODE(ip))
 		return ip->i_mount->m_sb.sb_rextsize;
 
-- 
2.31.1