X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=Documentation%2Ffilesystems%2FLocking;h=0706d32a61e6fc0fafbbe9a975d095d5e37e95f7;hb=8870d4029acda2666700bb5fd94d46b143f92ec4;hp=e540a24e5d069d4f6372adaabfa792ff11897ca9;hpb=18d63c35a265465b7137c4ea9c6b135aada13c3c;p=karo-tx-linux.git

diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking
index e540a24e5d06..0706d32a61e6 100644
--- a/Documentation/filesystems/Locking
+++ b/Documentation/filesystems/Locking
@@ -10,6 +10,7 @@ be able to use diff(1).
 --------------------------- dentry_operations --------------------------
 prototypes:
 	int (*d_revalidate)(struct dentry *, unsigned int);
+	int (*d_weak_revalidate)(struct dentry *, unsigned int);
 	int (*d_hash)(const struct dentry *, const struct inode *,
 			struct qstr *);
 	int (*d_compare)(const struct dentry *, const struct inode *,
@@ -25,6 +26,7 @@ prototypes:
 locking rules:
 		rename_lock	->d_lock	may block	rcu-walk
 d_revalidate:	no		no		yes (ref-walk)	maybe
+d_weak_revalidate:no		no		yes	 	no
 d_hash		no		no		no		maybe
 d_compare:	yes		no		no		maybe
 d_delete:	no		yes		no		no
@@ -80,7 +82,6 @@ rename:		yes (all)	(see below)
 readlink:	no
 follow_link:	no
 put_link:	no
-truncate:	yes		(see below)
 setattr:	yes
 permission:	no (may not block if called in rcu-walk mode)
 get_acl:	no
@@ -96,11 +97,6 @@ atomic_open:	yes
 	Additionally, ->rmdir(), ->unlink() and ->rename() have ->i_mutex on
 victim.
 	cross-directory ->rename() has (per-superblock) ->s_vfs_rename_sem.
-	->truncate() is never called directly - it's a callback, not a
-method. It's called by vmtruncate() - deprecated library function used by
-->setattr(). Locking information above applies to that call (i.e. is
-inherited from ->setattr() - vmtruncate() is used when ATTR_SIZE had been
-passed).
 
 See Documentation/filesystems/directory-locking for more detailed discussion
 of the locking scheme for directory operations.