Linux 3.14

[~andy/linux] / Documentation / filesystems / porting

diff --git a/Documentation/filesystems/porting b/Documentation/filesystems/porting
index f0890581f7f65a14d8451e85dcb2f59912db1d3d..fe2b7ae6f96224b7110b3576080d2aef4b7fef31 100644 (file)
--- a/Documentation/filesystems/porting
+++ b/Documentation/filesystems/porting
@@ -455,3 +455,11 @@ in your dentry operations instead.
        vfs_follow_link has been removed.  Filesystems must use nd_set_link
        from ->follow_link for normal symlinks, or nd_jump_link for magic
        /proc/<pid> style links.
+--
+[mandatory]
+       iget5_locked()/ilookup5()/ilookup5_nowait() test() callback used to be
+       called with both ->i_lock and inode_hash_lock held; the former is *not*
+       taken anymore, so verify that your callbacks do not rely on it (none
+       of the in-tree instances did).  inode_hash_lock is still held,
+       of course, so they are still serialized wrt removal from inode hash,
+       as well as wrt set() callback of iget5_locked().