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documentation: drop vmtruncate

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Removed vmtruncate

Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Marco Stornelli
2012-12-15 12:00:38 +01:00
committed by Al Viro
parent 7898575fc8
commit b9f61c3c0c
3 changed files with 1 additions and 18 deletions
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6
Documentation/filesystems/Locking
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@@ -80,7 +80,6 @@ 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 +95,6 @@ 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.