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306fb09794
linux/fs
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Chris Mason 306fb09794 aio: bump i_count instead of using igrab 
The aio batching code is using igrab to get an extra reference on the
inode so it can safely batch.  igrab will go ahead and take the global
inode spinlock, which can be a bottleneck on large machines doing lots
of AIO.

In this case, igrab isn't required because we already have a reference
on the file handle.  It is safe to just bump the i_count directly
on the inode.

Benchmarking shows this patch brings IOP/s on tons of flash up by about
2.5X.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-10-25 21:18:23 -04:00
..
9p fs/9p: Don't use dotl version of mknod for dotu inode operations 2010-09-13 08:13:03 -05:00
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 affs: testing the wrong variable 2010-10-25 21:18:20 -04:00
afs Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
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 BKL: Remove BKL from BFS 2010-10-04 21:10:35 +02:00
btrfs Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block 2010-10-22 17:07:18 -07:00
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 Coda: replace BKL with mutex 2010-10-25 08:02:40 -07:00
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 fs: add sync_inode_metadata 2010-10-25 21:18:19 -04:00
exportfs
ext2 fs: add sync_inode_metadata 2010-10-25 21:18:19 -04:00
ext3 fs: kill block_prepare_write 2010-10-25 21:18:20 -04:00
ext4 fs: kill block_prepare_write 2010-10-25 21:18:20 -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 fs: kill block_prepare_write 2010-10-25 21:18:20 -04:00
hfs hfs: use sync_dirty_buffer 2010-10-25 21:18:21 -04:00
hfsplus hfsplus: fix getxattr return value 2010-10-15 05:45:00 -07:00
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 BKL: Remove BKL from jffs2 2010-10-04 21:10:50 +02:00
jfs Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
lockd
logfs llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
minix minix: fix regression in minix_mkdir() 2010-09-09 18:57:25 -07:00
ncpfs ncpfs: Lock socket in ncpfs while setting its callbacks 2010-10-05 11:02:14 +02:00
nfs Merge branch 'vfs' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:01 -07:00
nfs_common
nfsd fs: add sync_inode_metadata 2010-10-25 21:18:19 -04:00
nilfs2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2 2010-10-23 01:26:47 -07:00
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 BKL: Remove BKL from NTFS 2010-10-04 21:10:41 +02:00
ocfs2 fs: kill block_prepare_write 2010-10-25 21:18:20 -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 fs: kill block_prepare_write 2010-10-25 21:18:20 -04:00
romfs llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
smbfs Merge branch 'vfs' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:01 -07:00
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 fs/sysv/super.c: add support for non-PDP11 v7 filesystems 2010-08-11 08:59:23 -07:00
ubifs Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6 2010-10-22 16:34:03 -07:00
udf Merge branch 'vfs' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:01 -07:00
ufs Merge branch 'vfs' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:01 -07:00
xfs fs: kill block_prepare_write 2010-10-25 21:18:20 -04:00
aio.c aio: bump i_count instead of using igrab 2010-10-25 21:18:23 -04:00
anon_inodes.c Revert "anon_inode: set S_IFREG on the anon_inode" 2010-05-27 22:03:05 -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
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 block: remove BLKDEV_IFL_WAIT 2010-09-16 20:52:58 +02:00
buffer.c fs/buffer.c: remove duplicated assignment on b_private 2010-10-25 21:18:22 -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 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
fs_struct.c fs: fs_struct rwlock to spinlock 2010-08-18 08:35:46 -04:00
fs-writeback.c fs: add sync_inode_metadata 2010-10-25 21:18:19 -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: mark destroy_inode static 2010-10-25 21:18:19 -04:00
internal.h fs: brlock vfsmount_lock 2010-08-18 08:35:48 -04:00
ioctl.c bkl: Remove locked .ioctl file operation 2010-08-14 00:24:24 +02:00
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 fs: add sync_inode_metadata 2010-10-25 21:18:19 -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
namei.c fs: move permission check back into __lookup_hash 2010-10-25 21:18:19 -04:00
namespace.c BKL: Remove BKL from do_new_mount() 2010-10-04 21:10:43 +02:00
nfsctl.c
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
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
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
xattr.c fs: xattr_handler table should be const 2010-05-21 18:31:18 -04:00