Kent Overstreet 5ffac122db aio: Don't use ctx->tail unnecessarily ... aio_complete() (arguably) needs to keep its own trusted copy of the tail pointer, but io_getevents() doesn't have to use it - it's already using the head pointer from the ring buffer. So convert it to use the tail from the ring buffer so it touches fewer cachelines and doesn't contend with the cacheline aio_complete() needs. Signed-off-by: Kent Overstreet <koverstreet@google.com> Cc: Zach Brown <zab@redhat.com> Cc: Felipe Balbi <balbi@ti.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Jens Axboe <axboe@kernel.dk> Cc: Asai Thambi S P <asamymuthupa@micron.com> Cc: Selvan Mani <smani@micron.com> Cc: Sam Bradshaw <sbradshaw@micron.com> Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Benjamin LaHaise <bcrl@kvack.org> Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>		2013-07-30 11:53:11 -04:00
..
9p	Second round of 9p patches for the 3.11 merge window.	2013-07-11 10:21:23 -07:00
adfs	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
affs	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
afs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-07-03 09:10:19 -07:00
autofs4	helper for reading ->d_count	2013-07-05 18:59:33 +04:00
befs	[readdir] convert befs	2013-06-29 12:56:55 +04:00
bfs	[readdir] convert bfs	2013-06-29 12:56:33 +04:00
btrfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2013-07-09 12:33:09 -07:00
cachefiles	mm: remove lru parameter from __pagevec_lru_add and remove parts of pagevec API	2013-07-03 16:07:31 -07:00
ceph	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2013-07-09 12:39:10 -07:00
cifs	CIFS: Fix a deadlock when a file is reopened	2013-07-11 18:05:41 -05:00
coda	helper for reading ->d_count	2013-07-05 18:59:33 +04:00
configfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-07-14 11:42:26 -07:00
cramfs	[readdir] convert f2fs	2013-06-29 12:56:46 +04:00
debugfs	debugfs: write_file_bool() - ensure strtobool() operates on valid data	2013-06-03 13:55:02 -07:00
devpts	fs: Limit sys_mount to only request filesystem modules (Part 2).	2013-03-07 01:08:55 -08:00
dlm	dlm: Avoid LVB truncation	2013-06-26 11:38:02 -05:00
ecryptfs	Code cleanups and improved buffer handling during page crypto operations	2013-07-11 10:20:18 -07:00
efivarfs	efivarfs: we can use simple_lookup() now	2013-07-14 17:48:35 +04:00
efs	[readdir] convert efs	2013-06-29 12:56:31 +04:00
exofs	Lots of bug fixes, cleanups and optimizations. In the bug fixes	2013-07-02 09:39:34 -07:00
exportfs	[readdir] constify ->actor	2013-06-29 12:57:05 +04:00
ext2	[O_TMPFILE] it's still short a few helpers, but infrastructure should be OK now...	2013-06-29 12:57:10 +04:00
ext3	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2013-07-09 12:08:43 -07:00
ext4	Various regression and bug fixes for ext4.	2013-07-14 21:47:51 -07:00
f2fs	f2fs: fix readdir incorrectness	2013-07-08 13:35:48 +04:00
fat	fatfs: add FAT_IOCTL_GET_VOLUME_ID	2013-07-09 10:33:25 -07:00
freevxfs	[readdir] convert freevxfs	2013-06-29 12:56:53 +04:00
fscache	FS-Cache: Don't use spin_is_locked() in assertions	2013-06-19 14:16:47 +01:00
fuse	mm: use totalram_pages instead of num_physpages at runtime	2013-07-03 16:07:35 -07:00
gfs2	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-07-03 09:10:19 -07:00
hfs	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
hfsplus	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
hostfs	[readdir] convert hostfs	2013-06-29 12:56:59 +04:00
hpfs	Merge branch 'hpfs' from Mikulas Patocka	2013-07-04 11:22:55 -07:00
hppfs	clean up scary strncpy(dst, src, strlen(src)) uses	2013-07-03 16:07:41 -07:00
hugetlbfs	hugetlbfs: fix mmap failure in unaligned size request	2013-05-07 18:38:27 -07:00
isofs	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
jbd	jbd: change journal_invalidatepage() to accept length	2013-05-21 23:26:36 -04:00
jbd2	jbd2: invalidate handle if jbd2_journal_restart() fails	2013-07-01 08:12:41 -04:00
jffs2	[readdir] convert jffs2	2013-06-29 12:56:47 +04:00
jfs	A couple cleanups to JFS for 3.11	2013-07-11 10:19:34 -07:00
lockd	drivers: avoid parsing names as kthread_run() format strings	2013-07-03 16:07:41 -07:00
logfs	Lots of bug fixes, cleanups and optimizations. In the bug fixes	2013-07-02 09:39:34 -07:00
minix	minix: bug widening a binary "not" operation	2013-06-29 12:57:35 +04:00
ncpfs	ncpfs: fix error return code in ncp_parse_options()	2013-07-09 10:33:25 -07:00
nfs	NFS: Allow nfs_updatepage to extend a write under additional circumstances	2013-07-09 19:32:50 -04:00
nfs_common	…
nfsd	Merge branch 'for-3.11' of git://linux-nfs.org/~bfields/linux	2013-07-11 10:17:13 -07:00
nilfs2	helper for reading ->d_count	2013-07-05 18:59:33 +04:00
nls	…
notify	fsnotify: update comments concerning locking scheme	2013-07-09 10:33:20 -07:00
ntfs	Lots of bug fixes, cleanups and optimizations. In the bug fixes	2013-07-02 09:39:34 -07:00
ocfs2	ocfs2: fix NULL pointer dereference when traversing o2hb_all_regions	2013-07-03 16:07:25 -07:00
omfs	[readdir] convert omfs	2013-06-29 12:56:37 +04:00
openpromfs	[readdir] convert openpromfs	2013-06-29 12:56:32 +04:00
proc	fs/proc/kcore.c: using strlcpy() instead of strncpy()	2013-07-03 16:08:02 -07:00
pstore	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2013-07-04 10:29:23 -07:00
qnx4	[readdir] convert qnx4	2013-06-29 12:56:38 +04:00
qnx6	[readdir] convert qnx6	2013-06-29 12:56:39 +04:00
quota	quota: Convert use of typedef ctl_table to struct ctl_table	2013-07-04 19:22:55 +02:00
ramfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-02-26 20:16:07 -08:00
reiserfs	Lots of bug fixes, cleanups and optimizations. In the bug fixes	2013-07-02 09:39:34 -07:00
romfs	[readdir] convert romfs	2013-06-29 12:56:29 +04:00
squashfs	[readdir] convert squashfs	2013-06-29 12:56:28 +04:00
sysfs	Driver core patches for 3.11-rc1	2013-07-02 11:44:19 -07:00
sysv	Don't pass inode to ->d_hash() and ->d_compare()	2013-06-29 12:57:36 +04:00
ubifs	Only a single patch which fixes a message.	2013-07-05 12:08:47 -07:00
udf	udf: provide ->tmpfile()	2013-06-29 12:57:12 +04:00
ufs	[readdir] simple local unixlike: switch to ->iterate()	2013-06-29 12:46:47 +04:00
xfs	xfs: update (#2) for 3.11-rc1	2013-07-13 11:40:24 -07:00
Kconfig	efivarfs: Move to fs/efivarfs	2013-04-17 13:25:09 +01:00
Kconfig.binfmt	fs: make binfmt support for #! scripts modular and removable	2013-04-30 17:04:04 -07:00
Makefile	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-05-01 17:51:54 -07:00
aio.c	aio: Don't use ctx->tail unnecessarily	2013-07-30 11:53:11 -04:00
anon_inodes.c	fs/anon_inode: Introduce a new lib function anon_inode_getfile_private()	2013-07-16 09:32:17 -04:00
attr.c	…
bad_inode.c	[readdir] ->readdir() is gone	2013-06-29 12:57:04 +04:00
binfmt_aout.c	mm: remove free_area_cache	2013-07-10 18:11:34 -07:00
binfmt_elf.c	mm: remove free_area_cache	2013-07-10 18:11:34 -07:00
binfmt_elf_fdpic.c	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2013-05-02 10:16:16 -07:00
binfmt_em86.c	…
binfmt_flat.c	new helper: read_code()	2013-04-29 15:40:23 -04:00
binfmt_misc.c	binfmt_misc: reuse string_unescape_inplace()	2013-04-30 17:04:03 -07:00
binfmt_script.c	…
binfmt_som.c	…
bio-integrity.c	bio-integrity: Add explicit field for owner of bip_buf	2013-03-23 14:26:34 -07:00
bio.c	Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block	2013-05-08 10:13:35 -07:00
block_dev.c	Merge branch 'for-3.11/core' of git://git.kernel.dk/linux-block	2013-07-11 13:03:24 -07:00
buffer.c	mm: vmscan: take page buffers dirty and locked state into account	2013-07-03 16:07:29 -07:00
char_dev.c	…
compat.c	[readdir] constify ->actor	2013-06-29 12:57:05 +04:00
compat_binfmt_elf.c	…
compat_ioctl.c	compat.c: LOOP_CLR_FD is taken care of in loop.c itself...	2013-06-29 12:46:44 +04:00
coredump.c	coredump: '% at the end' shouldn't bypass core_uses_pid logic	2013-07-03 16:08:02 -07:00
coredump.h	…
dcache.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-07-03 09:10:19 -07:00
dcookies.c	consolidate compat lookup_dcookie()	2013-03-03 23:00:23 -05:00
direct-io.c	Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block	2013-05-08 10:13:35 -07:00
drop_caches.c	…
eventfd.c	…
eventpoll.c	Merge branch 'akpm' (updates from Andrew Morton)	2013-07-03 17:12:13 -07:00
exec.c	fs/exec.c:de_thread: mt-exec should update ->real_start_time	2013-07-03 16:08:03 -07:00
fcntl.c	…
fhandle.c	…
file.c	don't bother with deferred freeing of fdtables	2013-05-01 17:31:42 -04:00
file_table.c	fput: turn "list_head delayed_fput_list" into llist_head	2013-07-13 13:29:10 +04:00
filesystems.c	fs: Limit sys_mount to only request filesystem modules.	2013-03-03 19:36:31 -08:00
fs-writeback.c	mm/writeback: don't check force_wait to handle bdi->work_list	2013-07-09 10:33:22 -07:00
fs_struct.c	constify path_get/path_put and fs_struct.c stuff	2013-03-01 23:51:07 -05:00
generic_acl.c	…
inode.c	allow the temp files created by open() to be linked to	2013-06-29 12:57:11 +04:00
internal.h	constify rw_verify_area()	2013-06-29 12:57:34 +04:00
ioctl.c	…
ioprio.c	…
libfs.c	make simple_lookup() usable for filesystems that set ->s_d_op	2013-07-14 17:43:25 +04:00
locks.c	locks: move file_lock_list to a set of percpu hlist_heads and convert file_lock_lock to an lglock	2013-07-08 13:36:42 +04:00
mbcache.c	…
mount.h	get rid of full-hash scan on detaching vfsmounts	2013-04-09 14:12:52 -04:00
mpage.c	…
namei.c	Safer ABI for O_TMPFILE	2013-07-13 13:26:37 +04:00
namespace.c	create_mnt_ns: unidiomatic use of list_add()	2013-05-04 15:18:53 -04:00
no-block.c	…
open.c	Safer ABI for O_TMPFILE	2013-07-13 13:26:37 +04:00
pipe.c	aio: don't include aio.h in sched.h	2013-05-07 20:16:25 -07:00
pnode.c	vfs: Fix invalid ida_remove() call	2013-05-31 15:16:33 -04:00
pnode.h	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-05-01 17:51:54 -07:00
posix_acl.c	…
proc_namespace.c	…
read_write.c	vfs: export lseek_execute() to modules	2013-07-03 16:23:27 +04:00
readdir.c	[readdir] constify ->actor	2013-06-29 12:57:05 +04:00
select.c	net: rename include/net/ll_poll.h to include/net/busy_poll.h	2013-07-10 17:08:27 -07:00
seq_file.c	seq_file: add seq_list_*_percpu helpers	2013-07-08 13:36:41 +04:00
signalfd.c	switch signalfd{,4}() to COMPAT_SYSCALL_DEFINE	2013-03-03 22:58:46 -05:00
splice.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-07-03 09:10:19 -07:00
stack.c	…
stat.c	…
statfs.c	…
super.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
sync.c	teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long	2013-03-03 22:46:22 -05:00
timerfd.c	timerfd: Add alarm timers	2013-05-29 12:57:34 -07:00
utimes.c	…
xattr.c	…
xattr_acl.c	…