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f991bd2e14210fb93d722cb23e54991de20e8a3d
linux/fs
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Eric Dumazet f991bd2e14 fs: introduce a per-cpu last_ino allocator 
new_inode() dirties a contended cache line to get increasing
inode numbers. This limits performance on workloads that cause
significant parallel inode allocation.

Solve this problem by using a per_cpu variable fed by the shared
last_ino in batches of 1024 allocations.  This reduces contention on
the shared last_ino, and give same spreading ino numbers than before
(i.e. same wraparound after 2^32 allocations).

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-10-25 21:26:11 -04:00
..
9p
new helper: ihold()
2010-10-25 21:26:11 -04:00
adfs
Merge branch 'vfs' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl
2010-10-22 10:52:01 -07:00
affs
new helper: ihold()
2010-10-25 21:26:11 -04:00
afs
new helper: ihold()
2010-10-25 21:26:11 -04:00
autofs
Merge branch 'vfs' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl
2010-10-22 10:52:01 -07:00
autofs4
Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl
2010-10-22 10:52:56 -07:00
befs
fix typos concerning "initiali[zs]e"
2010-06-16 18:05:05 +02:00
bfs
new helper: ihold()
2010-10-25 21:26:11 -04:00
btrfs
new helper: ihold()
2010-10-25 21:26:11 -04:00
cachefiles
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
ceph
ceph: do not carry i_lock for readdir from dcache
2010-10-20 15:38:27 -07:00
cifs
Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
2010-10-22 17:52:29 -07:00
coda
new helper: ihold()
2010-10-25 21:26:11 -04:00
configfs
fix setattr error handling in sysfs, configfs
2010-06-04 17:16:29 -04:00
cramfs
cramfs: only unlock new inodes
2010-08-18 01:01:33 -04:00
debugfs
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
devpts
Simplify devpts_get_sb() failure exits
2010-05-21 18:31:12 -04:00
dlm
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm
2010-10-22 17:33:16 -07:00
ecryptfs
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-10-24 13:41:39 -07:00
efs
…
exofs
new helper: ihold()
2010-10-25 21:26:11 -04:00
exportfs
…
ext2
new helper: ihold()
2010-10-25 21:26:11 -04:00
ext3
new helper: ihold()
2010-10-25 21:26:11 -04:00
ext4
new helper: ihold()
2010-10-25 21:26:11 -04:00
fat
Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block
2010-10-22 17:07:18 -07:00
freevxfs
BKL: remove BKL from freevxfs
2010-10-21 18:48:09 +02:00
fscache
Add a dummy printk function for the maintenance of unused printks
2010-08-12 09:51:35 -07:00
fuse
Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl
2010-10-22 10:52:56 -07:00
gfs2
new helper: ihold()
2010-10-25 21:26:11 -04:00
hfs
switch hfs to hlist_add_fake()
2010-10-25 21:24:16 -04:00
hfsplus
new helper: ihold()
2010-10-25 21:26:11 -04:00
hostfs
hostfs: fix UML crash: remove f_spare from hostfs
2010-10-25 21:18:21 -04:00
hpfs
Merge branch 'vfs' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl
2010-10-22 10:52:01 -07:00
hppfs
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
hugetlbfs
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
isofs
isofs: Fix isofs_get_blocks for 8TB files
2010-10-25 21:18:20 -04:00
jbd
Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block
2010-10-22 17:07:18 -07:00
jbd2
Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block
2010-10-22 17:07:18 -07:00
jffs2
new helper: ihold()
2010-10-25 21:26:11 -04:00
jfs
new helper: ihold()
2010-10-25 21:26:11 -04:00
lockd
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
logfs
new helper: ihold()
2010-10-25 21:26:11 -04:00
minix
new helper: ihold()
2010-10-25 21:26:11 -04:00
ncpfs
ncpfs: Lock socket in ncpfs while setting its callbacks
2010-10-05 11:02:14 +02:00
nfs
new helper: ihold()
2010-10-25 21:26:11 -04:00
nfs_common
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
nfsd
fs: add sync_inode_metadata
2010-10-25 21:18:19 -04:00
nilfs2
new helper: ihold()
2010-10-25 21:26:11 -04:00
nls
…
notify
Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl
2010-10-22 10:52:56 -07:00
ntfs
new helper: ihold()
2010-10-25 21:26:11 -04:00
ocfs2
new helper: ihold()
2010-10-25 21:26:11 -04:00
omfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bcopeland/omfs
2010-08-10 11:47:36 -07:00
openpromfs
…
partitions
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
2010-10-25 07:45:10 -07:00
proc
vfs: introduce FMODE_UNSIGNED_OFFSET for allowing negative f_pos
2010-10-25 21:18:21 -04:00
qnx4
BKL: remove BKL from qnx4
2010-10-21 18:48:04 +02:00
quota
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2010-08-10 11:26:52 -07:00
ramfs
check ATTR_SIZE contraints in inode_change_ok
2010-08-09 16:47:39 -04:00
reiserfs
new helper: ihold()
2010-10-25 21:26:11 -04:00
romfs
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
smbfs
smbfs never retains inodes with zero refcount in the first place
2010-10-25 21:23:01 -04:00
squashfs
Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl
2010-10-22 10:52:56 -07:00
sysfs
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
2010-10-22 19:36:42 -07:00
sysv
new helper: ihold()
2010-10-25 21:26:11 -04:00
ubifs
new helper: ihold()
2010-10-25 21:26:11 -04:00
udf
new helper: ihold()
2010-10-25 21:26:11 -04:00
ufs
new helper: ihold()
2010-10-25 21:26:11 -04:00
xfs
new helper: ihold()
2010-10-25 21:26:11 -04:00
aio.c
new helper: ihold()
2010-10-25 21:26:11 -04:00
anon_inodes.c
new helper: ihold()
2010-10-25 21:26:11 -04:00
attr.c
check ATTR_SIZE contraints in inode_change_ok
2010-08-09 16:47:39 -04:00
bad_inode.c
bkl: Remove locked .ioctl file operation
2010-08-14 00:24:24 +02:00
binfmt_aout.c
Don't dump task struct in a.out core-dumps
2010-10-14 10:57:40 -07:00
binfmt_elf_fdpic.c
binfmt_elf_fdpic: Fix clear_user() error handling
2010-06-01 08:11:06 -07:00
binfmt_elf.c
ARM: 6342/1: fix ASLR of PIE executables
2010-10-08 10:02:53 +01:00
binfmt_em86.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
binfmt_flat.c
flat: tweak default stack alignment
2010-06-29 15:29:31 -07:00
binfmt_misc.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
binfmt_script.c
Make do_execve() take a const filename pointer
2010-08-17 18:07:43 -07:00
binfmt_som.c
…
bio-integrity.c
fs/bio-integrity.c: return -ENOMEM on kmalloc failure
2010-08-23 13:36:59 +02:00
bio.c
block: unify flags for struct bio and struct request
2010-08-07 18:20:39 +02:00
block_dev.c
new helper: ihold()
2010-10-25 21:26:11 -04:00
buffer.c
fs/buffer.c: call __block_write_begin() if we have page
2010-10-25 21:18:23 -04:00
char_dev.c
Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl
2010-10-22 10:52:56 -07:00
compat_binfmt_elf.c
elf coredump: replace ELF_CORE_EXTRA_* macros by functions
2010-03-06 11:26:45 -08:00
compat_ioctl.c
fix rawctl compat ioctls breakage on amd64 and itanic
2010-10-19 11:29:54 +02:00
compat.c
Prevent freeing uninitialized pointer in compat_do_readv_writev
2010-09-22 17:22:38 -07:00
dcache.c
fs: brlock vfsmount_lock
2010-08-18 08:35:48 -04:00
dcookies.c
…
direct-io.c
O_DIRECT: fix the splitting up of contiguous I/O
2010-09-09 18:57:22 -07:00
drop_caches.c
simplify checks for I_CLEAR/I_FREEING
2010-08-09 16:47:44 -04:00
eventfd.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
eventpoll.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
exec.c
Export dump_{write,seek} to binary loader modules
2010-10-14 19:15:28 -07:00
fcntl.c
vfs: take O_NONBLOCK out of the O_* uniqueness test
2010-09-09 18:57:25 -07:00
fifo.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
file_table.c
fs: allow for more than 2^31 files
2010-10-25 21:18:20 -04:00
file.c
vfs: use kmalloc() to allocate fdmem if possible
2010-08-11 08:59:02 -07:00
filesystems.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
fs_struct.c
fs: fs_struct rwlock to spinlock
2010-08-18 08:35:46 -04:00
fs-writeback.c
fs: Implement lazy LRU updates for inodes
2010-10-25 21:26:09 -04:00
generic_acl.c
vfs: update ctime when changing the file's permission by setfacl
2010-08-18 01:04:22 -04:00
inode.c
fs: introduce a per-cpu last_ino allocator
2010-10-25 21:26:11 -04:00
internal.h
fs: Convert nr_inodes and nr_unused to per-cpu counters
2010-10-25 21:26:09 -04:00
ioctl.c
bkl: Remove locked .ioctl file operation
2010-08-14 00:24:24 +02:00
ioprio.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
Kconfig
fs: move exportfs since it is not a networking filesystem
2010-10-25 21:18:22 -04:00
Kconfig.binfmt
…
libfs.c
new helper: ihold()
2010-10-25 21:26:11 -04:00
locks.c
fs/locks.c: prepare for BKL removal
2010-10-05 11:02:04 +02:00
Makefile
Take statfs variants to fs/statfs.c
2010-05-21 18:31:17 -04:00
mbcache.c
mbcache: Limit the maximum number of cache entries
2010-08-18 06:24:41 -04:00
mpage.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
namei.c
new helper: ihold()
2010-10-25 21:26:11 -04:00
namespace.c
vfs: fix infinite loop caused by clone_mnt race
2010-10-25 21:24:16 -04:00
nfsctl.c
Switch may_open() and break_lease() to passing O_...
2010-03-03 13:00:21 -05:00
no-block.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
open.c
fs: cleanup files_lock locking
2010-08-18 08:35:47 -04:00
pipe.c
pipe: fix failure to return error code on ->confirm()
2010-10-21 14:56:33 +02:00
pnode.c
fs: brlock vfsmount_lock
2010-08-18 08:35:48 -04:00
pnode.h
VFS: Clean up shared mount flag propagation
2010-03-03 14:07:55 -05:00
posix_acl.c
…
read_write.c
vfs: introduce FMODE_UNSIGNED_OFFSET for allowing negative f_pos
2010-10-25 21:18:21 -04:00
read_write.h
…
readdir.c
vfs: fix warning: 'dirent' is used uninitialized in this function
2010-08-09 20:45:05 -07:00
select.c
Add generic sys_old_select()
2010-03-12 15:52:32 -08:00
seq_file.c
fs/seq_file.c: Remove unnecessary casts of private_data
2010-09-23 13:28:23 +02:00
signalfd.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
splice.c
splice: fix misuse of SPLICE_F_NONBLOCK
2010-08-07 18:52:56 +02:00
stack.c
…
stat.c
Mark arguments to certain syscalls as being const
2010-08-13 16:53:13 -07:00
statfs.c
add f_flags to struct statfs(64)
2010-08-09 16:48:44 -04:00
super.c
fs: scale files_lock
2010-08-18 08:35:48 -04:00
sync.c
get rid of file_fsync()
2010-08-09 16:47:43 -04:00
timerfd.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
utimes.c
Mark arguments to certain syscalls as being const
2010-08-13 16:53:13 -07:00
xattr_acl.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
xattr.c
fs: xattr_handler table should be const
2010-05-21 18:31:18 -04:00