xfs: assert that we hold the ilock for extent map access

[firefly-linux-kernel-4.4.55.git] / fs / xfs / xfs_inode_fork.c

diff --git a/fs/xfs/xfs_inode_fork.c b/fs/xfs/xfs_inode_fork.c
index cfee14a83cfe601d90bdc6732cc608746aaf3e03..e16985e1c2fdfe6e1ae1e78d0605011a773481b6 100644 (file)
--- a/fs/xfs/xfs_inode_fork.c
+++ b/fs/xfs/xfs_inode_fork.c
@@ -431,6 +431,8 @@ xfs_iread_extents(
        xfs_ifork_t     *ifp;
        xfs_extnum_t    nextents;
 
+       ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
+
        if (unlikely(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)) {
                XFS_ERROR_REPORT("xfs_iread_extents", XFS_ERRLEVEL_LOW,
                                 ip->i_mount);