xfs: assert locking precondition in xfs_readlink_bmap_ilocked

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c
index 12cd9cf7de416f03890ad09f108c2a8f9e0c505a..23a50d7aa46a738fb3f4e73c343d2d39f363aa55 100644 (file)
--- a/fs/xfs/xfs_symlink.c
+++ b/fs/xfs/xfs_symlink.c
@@ -61,6 +61,8 @@ xfs_readlink_bmap_ilocked(
        int                     fsblocks = 0;
        int                     offset;
 
+       ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED | XFS_ILOCK_EXCL));
+
        fsblocks = xfs_symlink_blocks(mp, pathlen);
        error = xfs_bmapi_read(ip, 0, fsblocks, mval, &nmaps, 0);
        if (error)