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Tao Ma feb473a6e8 ocfs2: Optimize inode group allocation by recording last used group. 
In ocfs2, the block group search looks for the "emptiest" group
to allocate from. So if the allocator has many equally(or almost
equally) empty groups, new block group will tend to get spread
out amongst them.

So we add osb_inode_alloc_group in ocfs2_super to record the last
used inode allocation group.
For more details, please see
http://oss.oracle.com/osswiki/OCFS2/DesignDocs/InodeAllocationStrategy.

I have done some basic test and the results are a ten times improvement on
some cold-cache stat workloads.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2009-04-03 11:39:18 -07:00
..
9p
vfs: simple_set_mnt() should return void
2009-03-27 14:44:03 -04:00
adfs
fs/adfs: return f_fsid for statfs(2)
2009-04-02 19:05:08 -07:00
affs
fs/affs: return f_fsid for statfs(2)
2009-04-02 19:05:08 -07:00
afs
FS-Cache: Make kAFS use FS-Cache
2009-04-03 16:42:41 +01:00
autofs
constify dentry_operations: autofs, autofs4
2009-03-27 14:44:00 -04:00
autofs4
autofs4: fix lookup deadlock
2009-04-01 08:59:23 -07:00
befs
fs/befs: return f_fsid for statfs(2)
2009-04-02 19:05:08 -07:00
bfs
fs/Kconfig: move bfs out
2009-01-22 13:15:57 +03:00
btrfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-04-02 21:09:10 -07:00
cachefiles
CacheFiles: A cache that backs onto a mounted filesystem
2009-04-03 16:42:41 +01:00
cifs
New helper - current_umask()
2009-03-31 23:00:26 -04:00
coda
constify dentry_operations: misc filesystems
2009-03-27 14:44:00 -04:00
configfs
constify dentry_operations: configfs
2009-03-27 14:44:03 -04:00
cramfs
fs/cramfs: return f_fsid for statfs(2)
2009-04-02 19:05:08 -07:00
debugfs
debugfs: add helpers for exporting a size_t simple value
2009-01-07 10:00:16 -08:00
devpts
Merge code for single and multiple-instance mounts
2009-03-27 14:44:04 -04:00
dlm
dlm: fix length calculation in compat code
2009-03-11 12:23:59 -05:00
ecryptfs
ecryptfs: use kzfree()
2009-04-01 08:59:23 -07:00
efs
fs/efs: return f_fsid for statfs(2)
2009-04-02 19:05:09 -07:00
exofs
exofs: Documentation
2009-03-31 19:44:38 +03:00
exportfs
Merge branch 'next' into for-linus
2008-12-25 11:40:09 +11:00
ext2
New helper - current_umask()
2009-03-31 23:00:26 -04:00
ext3
Merge branch 'ext3-latency-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
2009-04-03 11:10:33 -07:00
ext4
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-04-02 21:09:10 -07:00
fat
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-04-02 21:09:10 -07:00
freevxfs
fs/Kconfig: move vxfs out
2009-01-22 13:15:58 +03:00
fscache
FS-Cache: Implement data I/O part of netfs API
2009-04-03 16:42:39 +01:00
fuse
mm: page_mkwrite change prototype to match fault
2009-04-01 08:59:14 -07:00
gfs2
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-04-02 21:09:10 -07:00
hfs
fs/hfs: return f_fsid for statfs(2)
2009-04-02 19:05:09 -07:00
hfsplus
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-04-02 21:09:10 -07:00
hostfs
constify dentry_operations: misc filesystems
2009-03-27 14:44:00 -04:00
hpfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-04-02 21:09:10 -07:00
hppfs
hppfs: hppfs_read_file() may return -ERROR
2009-04-02 19:04:53 -07:00
hugetlbfs
mm: reintroduce and deprecate rlimit based access for SHM_HUGETLB
2009-04-01 08:59:12 -07:00
isofs
fs/isofs: return f_fsid for statfs(2)
2009-04-02 19:05:09 -07:00
jbd
Merge branch 'ext3-latency-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
2009-04-03 11:10:33 -07:00
jbd2
jbd2: Update locking coments
2009-03-27 17:20:40 -04:00
jffs2
New helper - current_umask()
2009-03-31 23:00:26 -04:00
jfs
New helper - current_umask()
2009-03-31 23:00:26 -04:00
lockd
NSM: Fix unaligned accesses in nsm_init_private()
2009-04-01 13:24:14 -04:00
minix
fs/minix: return f_fsid for statfs(2)
2009-04-02 19:05:09 -07:00
ncpfs
constify dentry_operations: misc filesystems
2009-03-27 14:44:00 -04:00
nfs
NFS: Add mount options to enable local caching on NFS
2009-04-03 16:42:48 +01:00
nfs_common
SUNRPC: nfsacl_encode/nfsacl_decode should be exported as GPL-only
2008-12-23 15:21:32 -05:00
nfsd
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-04-02 21:09:10 -07:00
nls
…
notify
fs: avoid I_NEW inodes
2009-03-27 14:44:05 -04:00
ntfs
ntfs: remove private wrapper of endian helpers
2009-04-01 08:59:18 -07:00
ocfs2
ocfs2: Optimize inode group allocation by recording last used group.
2009-04-03 11:39:18 -07:00
omfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-04-02 21:09:10 -07:00
openpromfs
zero i_uid/i_gid on inode allocation
2009-01-05 11:54:28 -05:00
partitions
Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
2009-03-26 16:04:22 -07:00
proc
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-04-02 21:09:10 -07:00
qnx4
fs/qnx4: return f_fsid for statfs(2)
2009-04-02 19:05:10 -07:00
quota
vfs: skip I_CLEAR state inodes
2009-04-02 19:04:48 -07:00
ramfs
ramfs: add support for "mode=" mount option
2009-04-01 08:59:22 -07:00
reiserfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-04-02 21:09:10 -07:00
romfs
fs/Kconfig: move romfs out
2009-01-22 13:15:59 +03:00
smbfs
constify dentry_operations: misc filesystems
2009-03-27 14:44:00 -04:00
squashfs
fs/squashfs: return f_fsid for statfs(2)
2009-04-02 19:05:10 -07:00
sysfs
mm: page_mkwrite change prototype to match fault: fix sysfs
2009-04-01 08:59:14 -07:00
sysv
fs/sysv: return f_fsid for statfs(2)
2009-04-02 19:05:10 -07:00
ubifs
mm: page_mkwrite change prototype to match fault
2009-04-01 08:59:14 -07:00
udf
udf: Don't write integrity descriptor too often
2009-04-02 13:36:28 +02:00
ufs
fs/ufs: return f_fsid for statfs(2)
2009-04-02 19:05:10 -07:00
xfs
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
2009-04-03 09:52:29 -07:00
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
bin_elf_fdpic: check the return value of clear_user
2009-04-02 19:05:01 -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: Don't attempt to expand the userspace stack to fill the space allocated
2009-01-08 12:04:47 +00:00
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
block: add private bio_set for bio integrity allocations
2009-03-24 12:35:17 +01:00
block_dev.c
Cleanup after commit 585d3bc06f4ca57f975a5a1f698f65a45ea66225
2009-04-01 07:07:16 -04:00
buffer.c
Merge branch 'ext3-latency-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
2009-04-03 11:10:33 -07:00
char_dev.c
fs: fix name overwrite in __register_chrdev_region()
2009-01-06 15:59:13 -08:00
compat_binfmt_elf.c
…
compat_ioctl.c
Merge branch 'for-linus' of git://neil.brown.name/md
2009-04-03 09:08:19 -07:00
compat.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-04-02 21:09:10 -07:00
dcache.c
Trim includes of fdtable.h
2009-03-31 23:00:28 -04:00
dcookies.c
[CVE-2009-0029] System call wrapper special cases
2009-01-14 14:15:18 +01:00
direct-io.c
fs: truncate blocks outside i_size after O_DIRECT write error
2009-01-06 15:59:06 -08:00
drop_caches.c
vfs: skip I_CLEAR state inodes
2009-04-02 19:04:48 -07:00
eventfd.c
epoll keyed wakeups: make eventfd use keyed wakeups
2009-04-01 08:59:20 -07:00
eventpoll.c
epoll keyed wakeups: teach epoll about hints coming with the wakeup key
2009-04-01 08:59:20 -07:00
exec.c
Get rid of indirect include of fs_struct.h
2009-03-31 23:00:27 -04:00
fcntl.c
Fix a lockdep warning in fasync_helper()
2009-03-30 08:00:24 -06:00
fifo.c
…
file_table.c
Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6
2009-03-26 16:14:02 -07:00
file.c
…
filesystems.c
[CVE-2009-0029] System call wrappers part 27
2009-01-14 14:15:29 +01:00
fs_struct.c
Get rid of indirect include of fs_struct.h
2009-03-31 23:00:27 -04:00
fs-writeback.c
writeback: guard against jiffies wraparound on inode->dirtied_when checks (try #3)
2009-04-02 19:04:48 -07:00
generic_acl.c
New helper - current_umask()
2009-03-31 23:00:26 -04:00
inode.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-03-27 16:23:12 -07:00
internal.h
New locking/refcounting for fs_struct
2009-03-31 23:00:26 -04:00
ioctl.c
Rationalize fasync return values
2009-03-16 08:34:35 -06:00
ioprio.c
[CVE-2009-0029] System call wrappers part 28
2009-01-14 14:15:30 +01:00
Kconfig
Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-fscache
2009-04-03 10:07:43 -07:00
Kconfig.binfmt
CORE_DUMP_DEFAULT_ELF_HEADERS depends on ELF_CORE
2009-01-09 16:54:41 -08:00
libfs.c
vfs: simple_set_mnt() should return void
2009-03-27 14:44:03 -04:00
locks.c
[CVE-2009-0029] System call wrappers part 16
2009-01-14 14:15:25 +01:00
Makefile
Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-fscache
2009-04-03 10:07:43 -07:00
mbcache.c
…
mpage.c
Remove two unneeded exports and make two symbols static in fs/mpage.c
2009-04-01 07:38:54 -04:00
namei.c
Get rid of indirect include of fs_struct.h
2009-03-31 23:00:27 -04:00
namespace.c
Get rid of indirect include of fs_struct.h
2009-03-31 23:00:27 -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
Get rid of indirect include of fs_struct.h
2009-03-31 23:00:27 -04:00
pipe.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-03-27 16:23:12 -07:00
pnode.c
…
pnode.h
…
posix_acl.c
…
read_write.c
preadv/pwritev: Add preadv and pwritev system calls.
2009-04-02 19:05:08 -07:00
read_write.h
…
readdir.c
[CVE-2009-0029] System call wrappers part 32
2009-01-14 14:15:31 +01:00
select.c
[CVE-2009-0029] System call wrappers part 32
2009-01-14 14:15:31 +01:00
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
FS-Cache: Recruit a page flags for cache management
2009-04-03 16:42:36 +01:00
stack.c
…
stat.c
[CVE-2009-0029] System call wrappers part 30
2009-01-14 14:15:30 +01:00
super.c
CacheFiles: Export things for CacheFiles
2009-04-03 16:42:40 +01:00
sync.c
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-quota-2.6
2009-03-27 14:48:34 -07:00
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
[CVE-2009-0029] System call wrappers part 13
2009-01-14 14:15:23 +01:00