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312d3ca856d369bb04d0443846b85b4cdde6fa8a
linux-st/fs
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Christoph Hellwig 312d3ca856 fs: use percpu counter for nr_dentry and nr_dentry_unused 
The nr_dentry stat is a globally touched cacheline and atomic operation
twice over the lifetime of a dentry. It is used for the benfit of userspace
only. Turn it into a per-cpu counter and always decrement it in d_free instead
of doing various batching operations to reduce lock hold times in the callers.

Based on an earlier patch from Nick Piggin <npiggin@suse.de>.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-10-25 21:26:12 -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
fs: do not assign default i_ino in new_inode
2010-10-25 21:26:11 -04:00
befs
…
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
fs: do not assign default i_ino in new_inode
2010-10-25 21:26:11 -04:00
cramfs
…
debugfs
fs: do not assign default i_ino in new_inode
2010-10-25 21:26:11 -04:00
devpts
…
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
fs: do not assign default i_ino in new_inode
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
fs: do not assign default i_ino in new_inode
2010-10-25 21:26:11 -04:00
fscache
…
fuse
fs: do not assign default i_ino in new_inode
2010-10-25 21:26:11 -04:00
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
fs: do not assign default i_ino in new_inode
2010-10-25 21:26:11 -04:00
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
…
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
…
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
fs: do not assign default i_ino in new_inode
2010-10-25 21:26:11 -04:00
omfs
…
openpromfs
…
partitions
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
2010-10-25 07:45:10 -07:00
proc
fs: do not assign default i_ino in new_inode
2010-10-25 21:26:11 -04:00
qnx4
BKL: remove BKL from qnx4
2010-10-21 18:48:04 +02:00
quota
…
ramfs
fs: do not assign default i_ino in new_inode
2010-10-25 21:26:11 -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
fs: do not assign default i_ino in new_inode
2010-10-25 21:26:11 -04:00
aio.c
new helper: ihold()
2010-10-25 21:26:11 -04:00
anon_inodes.c
fs: do not assign default i_ino in new_inode
2010-10-25 21:26:11 -04:00
attr.c
…
bad_inode.c
…
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.c
ARM: 6342/1: fix ASLR of PIE executables
2010-10-08 10:02:53 +01:00
binfmt_em86.c
…
binfmt_flat.c
…
binfmt_misc.c
fs: do not assign default i_ino in new_inode
2010-10-25 21:26:11 -04:00
binfmt_script.c
…
binfmt_som.c
…
bio-integrity.c
…
bio.c
…
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
…
compat_ioctl.c
fix rawctl compat ioctls breakage on amd64 and itanic
2010-10-19 11:29:54 +02:00
compat.c
…
dcache.c
fs: use percpu counter for nr_dentry and nr_dentry_unused
2010-10-25 21:26:12 -04:00
dcookies.c
…
direct-io.c
…
drop_caches.c
…
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
…
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
…
filesystems.c
…
fs_struct.c
…
fs-writeback.c
fs: Implement lazy LRU updates for inodes
2010-10-25 21:26:09 -04:00
generic_acl.c
…
inode.c
fs: do not assign default i_ino in new_inode
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
…
ioprio.c
…
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
…
mbcache.c
…
mpage.c
…
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
…
no-block.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
open.c
…
pipe.c
fs: do not assign default i_ino in new_inode
2010-10-25 21:26:11 -04:00
pnode.c
…
pnode.h
…
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
…
select.c
…
seq_file.c
fs: take dcache_lock inside __d_path
2010-10-25 21:26:12 -04:00
signalfd.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
splice.c
…
stack.c
…
stat.c
…
statfs.c
…
super.c
…
sync.c
…
timerfd.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
utimes.c
…
xattr_acl.c
…
xattr.c
…