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linux-2.6/fs/btrfs
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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
..
Kconfig Btrfs: add config option to enable btrfs integrity check 2011-12-21 19:14:16 +01:00
Makefile Merge branch 'send-v2' of git://github.com/ablock84/linux-btrfs into for-linus 2012-07-25 19:19:10 -04:00
acl.c Btrfs: cache no acl on new inodes 2012-05-30 10:23:27 -04:00
async-thread.c Btrfs: call the ordered free operation without any locks held 2012-07-25 16:15:07 -04:00
async-thread.h btrfs: return void in functions without error conditions 2012-03-22 01:45:34 +01:00
backref.c Btrfs: fix that error value is changed by mistake 2012-08-28 16:53:28 -04:00
backref.h Merge branch 'send-v2' of git://github.com/ablock84/linux-btrfs into for-linus 2012-07-25 19:19:10 -04:00
btrfs_inode.h Btrfs: kill free_space pointer from inode structure 2012-07-23 16:28:05 -04:00
check-integrity.c Btrfs: introduce subvol uuids and times 2012-07-25 23:28:38 +02:00
check-integrity.h Btrfs: add optional integrity check code 2011-12-21 19:14:09 +01:00
compat.h Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code 2009-01-06 09:38:55 -05:00
compression.c Btrfs: barrier before waitqueue_active 2012-08-28 16:53:33 -04:00
compression.h btrfs: return void in functions without error conditions 2012-03-22 01:45:34 +01:00
ctree.c Btrfs: don't run __tree_mod_log_free_eb on leaves 2012-08-28 16:53:34 -04:00
ctree.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2012-08-29 11:36:22 -07:00
delayed-inode.c Btrfs: barrier before waitqueue_active 2012-08-28 16:53:33 -04:00
delayed-inode.h Btrfs: flush delayed inodes if we're short on space 2012-07-23 15:41:40 -04:00
delayed-ref.c Btrfs: allow delayed refs to be merged 2012-08-28 16:53:38 -04:00
delayed-ref.h Btrfs: allow delayed refs to be merged 2012-08-28 16:53:38 -04:00
dir-item.c btrfs: replace many BUG_ONs with proper error handling 2012-03-22 11:52:54 +01:00
disk-io.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2012-08-29 11:36:22 -07:00
disk-io.h Btrfs: remove superblock writing after fatal error 2012-08-28 16:53:38 -04:00
export.c ->encode_fh() API change 2012-05-29 23:28:33 -04:00
export.h NFS support for btrfs - v3 2008-09-25 11:04:06 -04:00
extent-tree.c Btrfs: allow delayed refs to be merged 2012-08-28 16:53:38 -04:00
extent_io.c fs: push rcu_barrier() from deactivate_locked_super() to filesystems 2012-10-02 21:35:55 -04:00
extent_io.h Merge branch 'for-chris' of git://git.jan-o-sch.net/btrfs-unstable into for-linus 2012-05-31 16:49:53 -04:00
extent_map.c Btrfs: clean up code for merging extent maps 2011-08-01 14:30:50 -04:00
extent_map.h btrfs: fix structs where bitfields and spinlock/atomic share 8B word 2012-02-15 16:40:25 +01:00
file-item.c Btrfs: don't allocate a seperate csums array for direct reads 2012-08-28 16:53:30 -04:00
file.c btrfs: Convert to new freezing mechanism 2012-07-31 09:45:52 +04:00
free-space-cache.c Btrfs: do not count in readonly bytes 2012-07-23 16:28:03 -04:00
free-space-cache.h btrfs: remove all unused functions 2011-05-06 12:34:03 +02:00
hash.h Btrfs: remove crc32c.h and use libcrc32c directly. 2009-06-10 11:29:53 -04:00
inode-item.c Merge branch 'error-handling' into for-linus 2012-03-28 20:31:37 -04:00
inode-map.c Btrfs: show useful info in space reservation tracepoint 2012-03-29 09:57:44 -04:00
inode-map.h Btrfs: Support reading/writing on disk free ino cache 2011-04-25 16:46:11 +08:00
inode.c fs: push rcu_barrier() from deactivate_locked_super() to filesystems 2012-10-02 21:35:55 -04:00
ioctl.c switch simple cases of fget_light to fdget 2012-09-26 22:20:08 -04:00
ioctl.h Merge branch 'send-v2' of git://github.com/ablock84/linux-btrfs into for-linus 2012-07-25 19:19:10 -04:00
locking.c Btrfs: fix a misplaced address operator in a condition 2012-08-28 16:53:23 -04:00
locking.h btrfs: return void in functions without error conditions 2012-03-22 01:45:34 +01:00
lzo.c btrfs: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:21 +08:00
ordered-data.c btrfs: nuke pdflush from comments 2012-08-04 12:15:35 +04:00
ordered-data.h Btrfs: finish ordered extents in their own thread 2012-05-30 10:23:33 -04:00
orphan.c btrfs: replace many BUG_ONs with proper error handling 2012-03-22 11:52:54 +01:00
print-tree.c Btrfs: read device stats on mount, write modified ones during commit 2012-05-30 10:23:41 -04:00
print-tree.h Btrfs: Create extent_buffer interface for large blocksizes 2008-09-25 11:03:56 -04:00
qgroup.c Revert "Btrfs: fix some error codes in btrfs_qgroup_inherit()" 2012-09-14 20:06:30 -04:00
rcu-string.h Btrfs: use rcu to protect device->name 2012-06-14 21:29:16 -04:00
reada.c btrfs: reada_extent doesn't need kref for refcount 2012-10-02 21:35:55 -04:00
relocation.c btrfs: use printk_get_level and printk_skip_level, add __printf, fix fallout 2012-07-30 17:25:14 -07:00
root-tree.c Btrfs: fix some endian bugs handling the root times 2012-08-28 16:53:26 -04:00
scrub.c Btrfs: use rcu to protect device->name 2012-06-14 21:29:16 -04:00
send.c Btrfs: using vmalloc and friends needs vmalloc.h 2012-07-26 18:08:30 -07:00
send.h Btrfs: introduce BTRFS_IOC_SEND for btrfs send/receive 2012-07-25 23:30:19 +02:00
struct-funcs.c Btrfs: rewrite BTRFS_SETGET_FUNCS 2012-07-23 16:28:06 -04:00
super.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2012-08-29 11:36:22 -07:00
sysfs.c btrfs: Remove unused sysfs code 2011-06-17 14:54:18 -04:00
transaction.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2012-08-29 11:36:22 -07:00
transaction.h Merge branch 'qgroup' of git://git.jan-o-sch.net/btrfs-unstable into for-linus 2012-07-25 16:11:38 -04:00
tree-defrag.c btrfs: drop unused parameter from btrfs_release_path 2011-05-02 13:57:22 +02:00
tree-log.c Btrfs: return error of btrfs_update_inode() to caller 2012-07-23 16:27:54 -04:00
tree-log.h btrfs: return void in functions without error conditions 2012-03-22 01:45:34 +01:00
ulist.c Merge branch 'for-chris' of git://git.jan-o-sch.net/btrfs-unstable into for-linus 2012-05-31 16:49:53 -04:00
ulist.h Merge branch 'for-chris' of git://git.jan-o-sch.net/btrfs-unstable into for-linus 2012-05-31 16:49:53 -04:00
version.h Update Btrfs files for in-kernel usage 2008-09-25 15:41:59 -04:00
volumes.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2012-08-29 11:36:22 -07:00
volumes.h Btrfs: revert checksum error statistic which can cause a BUG() 2012-08-28 16:53:39 -04:00
xattr.c Btrfs: use i_version instead of our own sequence 2012-05-30 10:23:27 -04:00
xattr.h fs/vfs/security: pass last path component to LSM on inode creation 2011-02-01 11:12:29 -05:00
zlib.c btrfs: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:21 +08:00