kernel_optimize_test/fs/ext2
Kirill A. Shutemov 8c0a853770 fs: push rcu_barrier() from deactivate_locked_super() to filesystems
There's no reason to call rcu_barrier() on every
deactivate_locked_super().  We only need to make sure that all delayed rcu
free inodes are flushed before we destroy related cache.

Removing rcu_barrier() from deactivate_locked_super() affects some fast
paths.  E.g.  on my machine exit_group() of a last process in IPC
namespace takes 0.07538s.  rcu_barrier() takes 0.05188s of that time.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-02 21:35:55 -04:00
..
acl.c switch posix_acl_equiv_mode() to umode_t * 2011-08-01 02:10:06 -04:00
acl.h ext2: remove duplicate 'ext2_get_acl()' define 2011-07-29 23:21:50 -07:00
balloc.c ext2: use memweight() 2012-07-30 17:25:16 -07:00
dir.c ext2: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:22 +08:00
ext2.h userns: Convert ext2 to use kuid/kgid where appropriate. 2012-05-15 14:59:26 -07:00
file.c fs: take the ACL checks to common code 2011-07-25 14:30:23 -04:00
ialloc.c ext2: use memweight() 2012-07-30 17:25:16 -07:00
inode.c ext2: Implement freezing 2012-07-31 09:45:53 +04:00
ioctl.c ext2: protect inode changes in the SETVERSION and SETFLAGS ioctls 2012-01-11 13:39:02 +01:00
Kconfig fs/Kconfig: move ext2, ext3, ext4, JBD, JBD2 out 2008-10-20 11:43:59 -07:00
Makefile switch ext2 to simple_fsync() 2009-06-11 21:36:12 -04:00
namei.c don't expose I_NEW inodes via dentry->d_inode 2012-07-23 00:00:58 +04:00
super.c fs: push rcu_barrier() from deactivate_locked_super() to filesystems 2012-10-02 21:35:55 -04:00
symlink.c ext2: symlink must be handled via filesystem specific operation 2010-04-12 21:11:25 +02:00
xattr_security.c migrate ext2_fs.h guts to fs/ext2/ext2.h 2012-03-31 16:03:16 -04:00
xattr_trusted.c migrate ext2_fs.h guts to fs/ext2/ext2.h 2012-03-31 16:03:16 -04:00
xattr_user.c ext2/3/4: delete unneeded includes of module.h 2012-01-09 13:52:10 +01:00
xattr.c ext2: Remove s_dirt handling 2012-04-11 11:12:45 +02:00
xattr.h fs/vfs/security: pass last path component to LSM on inode creation 2011-02-01 11:12:29 -05:00
xip.c migrate ext2_fs.h guts to fs/ext2/ext2.h 2012-03-31 16:03:16 -04:00
xip.h xip: support non-struct page backed memory 2008-04-28 08:58:23 -07:00