iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
linux/fs
History
Naoya Horiguchi 025c5b2451 thp: optimize away unnecessary page table locking 
Currently when we check if we can handle thp as it is or we need to split
it into regular sized pages, we hold page table lock prior to check
whether a given pmd is mapping thp or not.  Because of this, when it's not
"huge pmd" we suffer from unnecessary lock/unlock overhead.  To remove it,
this patch introduces a optimized check function and replace several
similar logics with it.

[akpm@linux-foundation.org: checkpatch fixes]
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-21 17:54:57 -07:00
..
9p
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs
2012-01-10 15:09:01 -08:00
adfs
vfs: switch ->show_options() to struct dentry *
2012-01-06 23:19:54 -05:00
affs
affs: propagate umode_t
2012-01-03 22:55:04 -05:00
afs
Merge branch 'kmap_atomic' of git://github.com/congwang/linux
2012-03-21 09:40:26 -07:00
autofs4
autofs: work around unhappy compat problem on x86-64
2012-02-25 12:10:27 -08:00
befs
vfs: fix the stupidity with i_dentry in inode destructors
2012-01-03 22:52:40 -05:00
bfs
switch ->create() to umode_t
2012-01-03 22:54:53 -05:00
btrfs
Merge branch 'kmap_atomic' of git://github.com/congwang/linux
2012-03-21 09:40:26 -07:00
cachefiles
fs: move code out of buffer.c
2012-01-03 22:54:07 -05:00
ceph
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
2012-02-02 15:47:33 -08:00
cifs
CIFS: Do not kmalloc under the flocks spinlock
2012-03-06 21:50:15 -06:00
coda
coda: switch coda_cnode_make() to sane API as well, clean coda_lookup()
2012-01-10 11:13:16 -05:00
configfs
configfs: convert to umode_t
2012-01-03 22:54:57 -05:00
cramfs
cramfs: Fix typo in inode.c
2012-02-21 11:40:35 +01:00
debugfs
Merge 3.3-rc2 into the driver-core-next branch.
2012-02-02 11:24:44 -08:00
devpts
tty: rework pty count limiting
2012-01-24 14:01:01 -08:00
dlm
dlm: Do not allocate a fd for peeloff
2012-03-08 13:52:09 -08:00
ecryptfs
ecryptfs: fix printk format warning for size_t
2012-02-28 16:55:30 -08:00
efs
vfs: fix the stupidity with i_dentry in inode destructors
2012-01-03 22:52:40 -05:00
exofs
exofs: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:22 +08:00
exportfs
…
ext2
ext2: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:22 +08:00
ext3
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2012-01-09 12:51:21 -08:00
ext4
Merge branch 'for_linus' into for_linus_merged
2012-01-10 11:54:07 -05:00
fat
Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
2012-01-09 12:09:47 -08:00
freevxfs
fs: propagate umode_t, misc bits
2012-01-03 22:55:10 -05:00
fscache
…
fuse
fuse: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:22 +08:00
gfs2
gfs2: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:23 +08:00
hfs
vfs: switch ->show_options() to struct dentry *
2012-01-06 23:19:54 -05:00
hfsplus
hfsplus: creation of hidden dir on mount can fail
2012-01-10 17:48:52 -05:00
hostfs
vfs: switch ->show_options() to struct dentry *
2012-01-06 23:19:54 -05:00
hpfs
switch ->mknod() to umode_t
2012-01-03 22:54:54 -05:00
hppfs
vfs: for usbfs, etc. internal vfsmounts ->mnt_sb->s_root == ->mnt_root
2012-01-03 22:52:41 -05:00
hugetlbfs
hugetlbfs: fix hugetlb_get_unmapped_area()
2012-03-21 17:54:56 -07:00
isofs
isofs: inode leak on mount failure
2012-01-09 10:48:11 -05:00
jbd
Power management updates for 3.4
2012-03-21 10:15:51 -07:00
jbd2
Power management updates for 3.4
2012-03-21 10:15:51 -07:00
jffs2
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2012-03-20 21:12:50 -07:00
jfs
Merge branch 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2012-01-08 13:10:57 -08:00
lockd
module_param: make bool parameters really bool (drivers & misc)
2012-01-13 09:32:20 +10:30
logfs
logfs: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:24 +08:00
minix
minix: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:24 +08:00
ncpfs
vfs: switch ->show_options() to struct dentry *
2012-01-06 23:19:54 -05:00
nfs
nfs: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:24 +08:00
nfs_common
…
nfsd
Merge branch 'for-3.3' of git://linux-nfs.org/~bfields/linux
2012-01-14 12:26:41 -08:00
nilfs2
nilfs2: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:24 +08:00
nls
NLS: raname "maxlen" to "maxout" in UTF conversion routines
2011-11-26 19:58:47 -08:00
notify
fsnotify: don't BUG in fsnotify_destroy_mark()
2012-01-14 18:01:42 -08:00
ntfs
Merge branch 'kmap_atomic' of git://github.com/congwang/linux
2012-03-21 09:40:26 -07:00
ocfs2
ocfs2: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:25 +08:00
omfs
omfs: propagate umode_t
2012-01-03 22:55:01 -05:00
openpromfs
vfs: fix the stupidity with i_dentry in inode destructors
2012-01-03 22:52:40 -05:00
proc
thp: optimize away unnecessary page table locking
2012-03-21 17:54:57 -07:00
pstore
pstore: gracefully handle NULL pstore_info functions
2011-11-18 13:49:00 -08:00
qnx4
qnx4: don't leak ->BitMap on late failure exits
2012-01-19 13:54:36 -05:00
quota
quota: Fix deadlock with suspend and quotas
2012-02-13 20:45:39 -05:00
ramfs
pohmelfs: propagate umode_t
2012-01-03 22:55:07 -05:00
reiserfs
Merge branch 'kmap_atomic' of git://github.com/congwang/linux
2012-03-21 09:40:26 -07:00
romfs
MTD pull for 3.3
2012-01-10 13:45:22 -08:00
squashfs
squashfs: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:25 +08:00
sysfs
Revert "sysfs: Kill nlink counting."
2012-03-08 13:03:10 -08:00
sysv
vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb
2012-01-06 23:16:53 -05:00
ubifs
ubifs: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:26 +08:00
udf
udf: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:26 +08:00
ufs
vfs: switch ->show_options() to struct dentry *
2012-01-06 23:19:54 -05:00
xfs
xfs: make inode quota check more general
2012-02-21 10:12:43 -06:00
aio.c
fs: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:21 +08:00
anon_inodes.c
…
attr.c
switch is_sxid() to umode_t
2012-01-03 22:55:11 -05:00
bad_inode.c
switch ->mknod() to umode_t
2012-01-03 22:54:54 -05:00
binfmt_aout.c
aout: move setup_arg_pages() prior to reading/mapping the binary
2012-03-05 13:51:32 -08:00
binfmt_elf_fdpic.c
…
binfmt_elf.c
regset: Prevent null pointer reference on readonly regsets
2012-03-02 11:38:15 -08:00
binfmt_em86.c
…
binfmt_flat.c
…
binfmt_misc.c
vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb
2012-01-06 23:16:53 -05:00
binfmt_script.c
…
binfmt_som.c
…
bio-integrity.c
fs: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:21 +08:00
bio.c
bio: don't overflow in bio_get_nr_vecs()
2012-02-08 22:07:18 +01:00
block_dev.c
block: Fix NULL pointer dereference in sd_revalidate_disk
2012-03-02 10:38:33 +01:00
buffer.c
fs: move code out of buffer.c
2012-01-03 22:54:07 -05:00
char_dev.c
char_dev.c: fix up some whitespace errors
2011-12-13 11:18:17 -08:00
compat_binfmt_elf.c
…
compat_ioctl.c
ppp: Replace uses of <linux/if_ppp.h> with <linux/ppp-ioctl.h>
2012-03-04 20:41:38 -05:00
compat.c
vfs: fix compat_sys_stat() handling of overflows in st_nlink
2012-02-13 20:45:39 -05:00
dcache.c
Merge branch 'dcache-word-accesses'
2012-03-19 16:37:28 -07:00
dcookies.c
…
direct-io.c
Restore direct_io / truncate locking API
2012-02-23 15:56:21 -08:00
drop_caches.c
…
eventfd.c
…
eventpoll.c
Don't limit non-nested epoll paths
2012-03-18 12:25:04 -07:00
exec.c
Merge branch 'kmap_atomic' of git://github.com/congwang/linux
2012-03-21 09:40:26 -07:00
fcntl.c
…
fhandle.c
vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb
2012-01-06 23:16:53 -05:00
fifo.c
…
file_table.c
vfs: prevent remount read-only if pending removes
2012-01-06 23:20:13 -05:00
file.c
…
filesystems.c
vfs: convert fs_supers to hlist
2012-01-03 22:52:39 -05:00
fs_struct.c
…
fs-writeback.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2012-03-20 21:12:50 -07:00
generic_acl.c
…
inode.c
restore smp_mb() in unlock_new_inode()
2012-03-10 17:07:28 -05:00
internal.h
vfs: protect remounting superblock read-only
2012-01-06 23:20:12 -05:00
ioctl.c
vfs: fix up ENOIOCTLCMD error handling
2012-01-05 15:40:12 -08:00
ioprio.c
block: strip out locking optimization in put_io_context()
2012-02-07 07:51:30 +01:00
Kconfig
vfs: use 'unsigned long' accesses for dcache name comparison and hashing
2012-03-08 18:08:44 -08:00
Kconfig.binfmt
fs: binfmt_elf: create Kconfig variable for PIE randomization
2012-01-10 16:30:51 -08:00
libfs.c
fs: move code out of buffer.c
2012-01-03 22:54:07 -05:00
locks.c
vfs: fix handling of lock allocation failure in lease-break case
2011-12-26 10:25:26 -08:00
Makefile
Merge branches 'vfsmount-guts', 'umode_t' and 'partitions' into Z
2012-01-06 23:15:54 -05:00
mbcache.c
…
mount.h
vfs: keep list of mounts for each superblock
2012-01-06 23:20:12 -05:00
mpage.c
fs: remove unneeded plug in mpage_readpages()
2012-01-12 09:19:54 +01:00
namei.c
fs/namei.c: fix warnings on 32-bit
2012-03-21 17:54:54 -07:00
namespace.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2012-01-08 13:21:22 -08:00
no-block.c
…
open.c
switch security_path_chmod() to struct path *
2012-01-06 23:16:53 -05:00
pipe.c
fs: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:21 +08:00
pnode.c
vfs: switch pnode.h macros to struct mount *
2012-01-03 22:57:11 -05:00
pnode.h
vfs: switch pnode.h macros to struct mount *
2012-01-03 22:57:11 -05:00
posix_acl.c
vfs: pass all mask flags check_acl and posix_acl_permission
2011-10-28 14:58:54 +02:00
proc_namespace.c
vfs: switch ->show_options() to struct dentry *
2012-01-06 23:19:54 -05:00
read_write.c
Cross Memory Attach
2011-10-31 17:30:44 -07:00
read_write.h
…
readdir.c
…
select.c
sys_poll: fix incorrect type for 'timeout' parameter
2012-02-21 17:24:20 -08:00
seq_file.c
seq_file: fix mishandling of consecutive pread() invocations.
2012-03-21 17:54:54 -07:00
signalfd.c
epoll: ep_unregister_pollwait() can use the freed pwq->whead
2012-02-24 11:42:50 -08:00
splice.c
fs: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:21 +08:00
stack.c
filesystems: add set_nlink()
2011-11-02 12:53:43 +01:00
stat.c
readlinkat: ensure we return ENOENT for the empty pathname for normal lookups
2011-11-02 12:53:42 +01:00
statfs.c
vfs: new helper - vfs_ustat()
2012-01-03 22:53:07 -05:00
super.c
vfs: Provide function to get superblock and wait for it to thaw
2012-02-13 20:45:38 -05:00
sync.c
fs: move code out of buffer.c
2012-01-03 22:54:07 -05:00
timerfd.c
…
utimes.c
…
xattr_acl.c
…
xattr.c
vfs: mnt_drop_write_file()
2012-01-03 22:52:40 -05:00