1 files changed, 2 insertions, 0 deletions

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index e7ae08d1df48..123b20c8cbf2 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1258,8 +1258,10 @@ xfs_file_last_byte(
          * necessary.
          */
         if (ip->i_df.if_flags & XFS_IFEXTENTS) {
+                xfs_ilock(ip, XFS_ILOCK_SHARED);
                 error = xfs_bmap_last_offset(NULL, ip, &last_block,
                         XFS_DATA_FORK);
+                xfs_iunlock(ip, XFS_ILOCK_SHARED);
                 if (error) {
                         last_block = 0;
                 }