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android_kernel_xiaomi_sm8450/fs
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Thomas Gleixner 8b0b1db013 remove put_cpu_no_resched() 
put_cpu_no_resched() is an optimization of put_cpu() which unfortunately
can cause high latencies.

The nfs iostats code uses put_cpu_no_resched() in a code sequence where a
reschedule request caused by an interrupt between the get_cpu() and the
put_cpu_no_resched() can delay the reschedule for at least HZ.

The other users of put_cpu_no_resched() optimize correctly in interrupt
code, but there is no real harm in using the put_cpu() function which is
an alias for preempt_enable().  The extra check of the preemmpt count is
not as critical as the potential source of missing a reschedule.

Debugged in the preempt-rt tree and verified in mainline.

Impact: remove a high latency source

[akpm@linux-foundation.org: build fix]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-16 19:47:48 -07:00
..
9p
Fix a leak in failure exit in 9p ->get_sb()
2009-05-09 10:49:40 -04:00
adfs
Fix adfs GET_FRAG_ID() on big-endian
2009-06-11 21:36:14 -04:00
affs
affs: add ->sync_fs
2009-06-11 21:36:14 -04:00
afs
push BKL down into ->put_super
2009-06-11 21:36:07 -04:00
autofs
switch follow_down()
2009-06-11 21:36:01 -04:00
autofs4
switch follow_down()
2009-06-11 21:36:01 -04:00
befs
push BKL down into ->put_super
2009-06-11 21:36:07 -04:00
bfs
bfs: add ->sync_fs
2009-06-11 21:36:14 -04:00
btrfs
enforce ->sync_fs is only called for rw superblock
2009-06-11 21:36:06 -04:00
cachefiles
enforce ->sync_fs is only called for rw superblock
2009-06-11 21:36:06 -04:00
cifs
push BKL down into ->put_super
2009-06-11 21:36:07 -04:00
coda
splice: implement default splice_read method
2009-05-11 14:13:10 +02:00
configfs
configfs: Rework configfs_depend_item() locking and make lockdep happy
2009-04-30 10:48:26 -07:00
cramfs
fs/cramfs: return f_fsid for statfs(2)
2009-04-02 19:05:08 -07:00
debugfs
debugfs: function to know if debugfs is initialized
2009-03-23 16:25:46 +01:00
devpts
devpts: unregister the file system on error
2009-06-11 08:51:06 -07:00
dlm
dlm: use more NOFS allocation
2009-05-15 11:24:59 -05:00
ecryptfs
push BKL down into ->put_super
2009-06-11 21:36:07 -04:00
efs
fs/efs: return f_fsid for statfs(2)
2009-04-02 19:05:09 -07:00
exofs
[SCSI] Merge branch 'linus'
2009-06-12 10:02:03 -05:00
exportfs
Merge branch 'next' into for-linus
2008-12-25 11:40:09 +11:00
ext2
trivial: ext2: fix a typo in comment in ext2.h
2009-06-12 18:01:44 +02:00
ext3
Push BKL down into ->remount_fs()
2009-06-11 21:36:11 -04:00
ext4
Push BKL down into ->remount_fs()
2009-06-11 21:36:11 -04:00
fat
fat: add ->sync_fs
2009-06-11 21:36:15 -04:00
freevxfs
push BKL down into ->put_super
2009-06-11 21:36:07 -04:00
fscache
FS-Cache: Fixup renamed filenames in comments in internal.h
2009-05-27 10:20:13 -07:00
fuse
Merge branch 'cuse' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
2009-06-12 09:31:20 -07:00
gfs2
GFS2: Remove lock_kernel from gfs2_put_super()
2009-06-12 13:40:47 +01:00
hfs
hfs: add ->sync_fs
2009-06-11 21:36:15 -04:00
hfsplus
hfsplus: add ->sync_fs
2009-06-11 21:36:16 -04:00
hostfs
constify dentry_operations: misc filesystems
2009-03-27 14:44:00 -04:00
hpfs
Push BKL down into ->remount_fs()
2009-06-11 21:36:11 -04:00
hppfs
hppfs: hppfs_read_file() may return -ERROR
2009-04-02 19:04:53 -07:00
hugetlbfs
Merge branch 'master' into next
2009-05-22 18:40:59 +10:00
isofs
push BKL down into ->put_super
2009-06-11 21:36:07 -04:00
jbd
jbd: fix race in buffer processing in commit code
2009-06-09 16:59:03 -07:00
jbd2
jbd2: Fix minor typos in comments in fs/jbd2/journal.c
2009-06-09 00:06:20 -04:00
jffs2
jffs2: call jffs2_write_super from jffs2_sync_fs
2009-06-11 21:36:16 -04:00
jfs
Push BKL down into ->remount_fs()
2009-06-11 21:36:11 -04:00
lockd
lockd: fix list corruption on lockd restart
2009-05-06 17:19:36 -04:00
minix
switch minix to simple_fsync()
2009-06-11 21:36:12 -04:00
ncpfs
push BKL down into ->put_super
2009-06-11 21:36:07 -04:00
nfs
remove put_cpu_no_resched()
2009-06-16 19:47:48 -07:00
nfs_common
SUNRPC: nfsacl_encode/nfsacl_decode should be exported as GPL-only
2008-12-23 15:21:32 -05:00
nfsd
switch follow_down()
2009-06-11 21:36:01 -04:00
nilfs2
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2
2009-06-15 09:13:49 -07:00
nls
…
notify
fsnotify: allow groups to set freeing_mark to null
2009-06-11 14:57:55 -04:00
ntfs
ntfs: use is_power_of_2() function for clarity.
2009-06-16 19:47:48 -07:00
ocfs2
Push BKL down into ->remount_fs()
2009-06-11 21:36:11 -04:00
omfs
switch omfs to simple_fsync()
2009-06-11 21:36:13 -04:00
openpromfs
zero i_uid/i_gid on inode allocation
2009-01-05 11:54:28 -05:00
partitions
Merge branch 'for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
2009-06-12 09:29:42 -07:00
proc
oom: move oom_adj value from task_struct to mm_struct
2009-06-16 19:47:43 -07:00
qnx4
fs/qnx4: sanitize includes
2009-06-11 21:36:12 -04:00
quota
quota: cleanup dquota sync functions (version 4)
2009-06-11 21:36:04 -04:00
ramfs
ramfs: ignore unknown mount options
2009-06-14 17:58:25 -07:00
reiserfs
Push BKL down into ->remount_fs()
2009-06-11 21:36:11 -04:00
romfs
ROMFS: romfs_dev_read() error ignored
2009-05-09 10:49:41 -04:00
smbfs
push BKL down into ->put_super
2009-06-11 21:36:07 -04:00
squashfs
push BKL down into ->put_super
2009-06-11 21:36:07 -04:00
sysfs
sysfs: file.c: use create_singlethread_workqueue()
2009-05-28 14:24:07 -07:00
sysv
sysv: add ->sync_fs
2009-06-11 21:36:16 -04:00
ubifs
Push BKL down into ->remount_fs()
2009-06-11 21:36:11 -04:00
udf
switch udf to simple_fsync()
2009-06-11 21:36:13 -04:00
ufs
ufs: add ->sync_fs
2009-06-11 21:36:16 -04:00
xfs
Merge branch 'master' of git://oss.sgi.com/xfs/xfs into for-linus
2009-06-12 21:28:59 -05:00
aio.c
aio: lookup_ioctx can return the wrong value when looking up a bogus context
2009-03-19 15:57:18 -07:00
anon_inodes.c
constify dentry_operations: rest
2009-03-27 14:44:03 -04:00
attr.c
vfs: Use lowercase names of quota functions
2009-03-26 02:18:35 +01:00
bad_inode.c
kill ->dir_notify()
2008-12-31 18:07:43 -05:00
binfmt_aout.c
sanitize ifdefs in binfmt_aout
2009-01-03 11:45:54 -08:00
binfmt_elf_fdpic.c
ptrace: s/parent/real_parent/ in binfmt_elf_fdpic.c
2009-05-02 15:36:10 -07:00
binfmt_elf.c
Trim includes in binfmt_elf
2009-03-31 23:00:27 -04:00
binfmt_em86.c
…
binfmt_flat.c
flat: fix data sections alignment
2009-05-29 08:40:02 -07:00
binfmt_misc.c
fs/binfmt_misc.c: add terminating newline to /proc/sys/fs/binfmt_misc/status
2009-01-06 15:59:19 -08:00
binfmt_script.c
…
binfmt_som.c
Don't crap into descriptor table in binfmt_som
2009-03-31 23:00:28 -04:00
bio-integrity.c
block: add private bio_set for bio integrity allocations
2009-03-24 12:35:17 +01:00
bio.c
trivial: fix typo in bio_alloc kernel doc
2009-06-12 18:01:47 +02:00
block_dev.c
vfs: Rename fsync_super() to sync_filesystem() (version 4)
2009-06-11 21:36:04 -04:00
buffer.c
Merge branch 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block
2009-06-11 11:10:35 -07:00
char_dev.c
fs: Remove i_cindex from struct inode
2009-06-11 21:36:09 -04:00
compat_binfmt_elf.c
…
compat_ioctl.c
trivial: fix typo compatiable/compatiability has extra 'a'.
2009-06-12 18:01:46 +02:00
compat.c
trivial: fix comment typo in fs/compat.c
2009-06-12 18:01:44 +02:00
dcache.c
dcache: extrace and use d_unlinked()
2009-06-11 21:36:06 -04:00
dcookies.c
[CVE-2009-0029] System call wrapper special cases
2009-01-14 14:15:18 +01:00
direct-io.c
block: Do away with the notion of hardsect_size
2009-05-22 23:22:54 +02:00
drop_caches.c
mm: remove __invalidate_mapping_pages variant
2009-06-16 19:47:43 -07:00
eventfd.c
eventfd: export eventfd_signal and eventfd_fget for lguest
2009-06-12 22:27:09 +09:30
eventpoll.c
epoll: fix size check in epoll_create()
2009-05-12 14:11:35 -07:00
exec.c
Merge branch 'perfcounters-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-06-11 14:01:07 -07:00
fcntl.c
dup2: Fix return value with oldfd == newfd and invalid fd
2009-05-11 12:18:06 -07:00
fifo.c
…
file_table.c
fs: move mark_files_ro into file_table.c
2009-06-11 21:36:02 -04:00
file.c
…
filesystems.c
fs: Mark get_filesystem_list() as __init function.
2009-04-20 23:02:52 -04:00
fs_struct.c
Get rid of indirect include of fs_struct.h
2009-03-31 23:00:27 -04:00
fs-writeback.c
writeback: skip new or to-be-freed inodes
2009-06-16 19:47:45 -07:00
generic_acl.c
New helper - current_umask()
2009-03-31 23:00:26 -04:00
inode.c
trivial: fs/inode: Fix typo in file_update_time nanodoc
2009-06-12 18:01:45 +02:00
internal.h
Trim a bit of crap from fs.h
2009-06-11 21:36:07 -04:00
ioctl.c
fiemap: fix problem with setting FIEMAP_EXTENT_LAST
2009-05-06 16:36:09 -07:00
ioprio.c
[CVE-2009-0029] System call wrappers part 28
2009-01-14 14:15:30 +01:00
Kconfig
CUSE: implement CUSE - Character device in Userspace
2009-06-09 11:24:11 +02:00
Kconfig.binfmt
CORE_DUMP_DEFAULT_ELF_HEADERS depends on ELF_CORE
2009-01-09 16:54:41 -08:00
libfs.c
New helper - simple_fsync()
2009-06-11 21:36:11 -04:00
locks.c
[CVE-2009-0029] System call wrappers part 16
2009-01-14 14:15:25 +01:00
Makefile
nilfs2: update makefile and Kconfig
2009-04-07 08:31:16 -07:00
mbcache.c
…
mpage.c
ext4: Properly initialize the buffer_head state
2009-05-13 15:13:42 -04:00
namei.c
switch lookup_mnt()
2009-06-11 21:36:01 -04:00
namespace.c
Push BKL down into do_remount_sb()
2009-06-11 21:36:08 -04:00
nfsctl.c
[CVE-2009-0029] System call wrappers part 27
2009-01-14 14:15:29 +01:00
no-block.c
…
open.c
fs: introduce mnt_clone_write
2009-06-11 21:36:02 -04:00
pipe.c
splice: implement default splice_read method
2009-05-11 14:13:10 +02:00
pnode.c
…
pnode.h
…
posix_acl.c
CRED: Wrap task credential accesses in the filesystem subsystem
2008-11-14 10:39:05 +11:00
read_write.c
splice: implement default splice_read method
2009-05-11 14:13:10 +02:00
read_write.h
…
readdir.c
[CVE-2009-0029] System call wrappers part 32
2009-01-14 14:15:31 +01:00
select.c
poll: avoid extra wakeups in select/poll
2009-06-16 19:47:48 -07:00
seq_file.c
cpumask: fix seq_bitmap_*() functions.
2009-03-30 22:05:11 +10:30
signalfd.c
[CVE-2009-0029] System call wrappers part 31
2009-01-14 14:15:31 +01:00
splice.c
splice: fix kmaps in default_file_splice_write()
2009-05-19 11:37:46 +02:00
stack.c
…
stat.c
kill vfs_stat_fd / vfs_lstat_fd
2009-04-20 23:02:52 -04:00
super.c
Push BKL down into ->remount_fs()
2009-06-11 21:36:11 -04:00
sync.c
remove the call to ->write_super in __sync_filesystem
2009-06-11 21:36:17 -04:00
timerfd.c
timerfd: add flags check
2009-02-18 15:37:53 -08:00
utimes.c
[CVE-2009-0029] System call wrappers part 30
2009-01-14 14:15:30 +01:00
xattr_acl.c
…
xattr.c
fs: introduce mnt_clone_write
2009-06-11 21:36:02 -04:00