kernel_optimize_test/fs/fuse
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
..
control.c fuse: mark variables uninitialized 2012-09-03 17:44:06 +02:00
cuse.c cuse: kill connection on initialization error 2012-08-30 19:24:35 +02:00
dev.c make get_file() return its argument 2012-09-26 21:10:25 -04:00
dir.c fuse: check create mode in atomic open 2012-08-15 13:01:24 +02:00
file.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse 2012-08-16 11:46:31 -07:00
fuse_i.h fuse: add FUSE_AUTO_INVAL_DATA init flag 2012-07-18 16:09:40 +02:00
inode.c fs: push rcu_barrier() from deactivate_locked_super() to filesystems 2012-10-02 21:35:55 -04:00
Kconfig fs/Kconfig: move fuse out 2009-01-22 13:15:55 +03:00
Makefile CUSE: implement CUSE - Character device in Userspace 2009-06-09 11:24:11 +02:00