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Badari Pulavarty 5e70030d4c ext4: statfs speed up 
This is a patch that speeds up statfs.  It is very simple - the "overhead"
calculation, which takes a huge amount of time for large filesystems, never
changes unless the size of the filesystem itself changes.  That means we can
store it in memory and only recalculate if the filesystem has been resized
(almost never).

It also fixes a minor problem that we never update the on-disk superblock free
blocks/inodes counts until the filesystem is unmounted.  While not fatal, we
may as well update that on disk when we have the information, and it makes
things like debugfs and dumpe2fs report a bit more accurate info.

Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16 09:05:52 -07:00
..
9p
9p: re-enable mount time debug option
2007-07-14 15:14:14 -05:00
adfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
affs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
afs
AFS: drop explicit extern
2007-07-16 09:05:43 -07:00
autofs
Replace pid_t in autofs with struct pid reference
2007-05-11 08:29:36 -07:00
autofs4
Fix some coding-style errors in autofs
2007-05-11 08:29:36 -07:00
befs
Remove SLAB_CTOR_CONSTRUCTOR
2007-05-17 05:23:04 -07:00
bfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
cifs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
coda
wrong order of arguments of ->readdir()
2007-07-15 16:40:51 -07:00
configfs
Detach sched.h from mm.h
2007-05-21 09:18:19 -07:00
cramfs
mm: make read_cache_page synchronous
2007-05-07 12:12:51 -07:00
debugfs
debugfs: add rename for debugfs files
2007-07-11 16:09:00 -07:00
devpts
devpts: add fsnotify create event
2007-05-08 11:14:59 -07:00
dlm
[DLM] dump more lock values
2007-07-09 08:24:13 +01:00
ecryptfs
sysfs: kill unnecessary attribute->owner
2007-07-11 16:09:06 -07:00
efs
Remove SLAB_CTOR_CONSTRUCTOR
2007-05-17 05:23:04 -07:00
exportfs
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
ext2
ext2: statfs speed up
2007-07-16 09:05:52 -07:00
ext3
ext3: statfs speed up
2007-07-16 09:05:52 -07:00
ext4
ext4: statfs speed up
2007-07-16 09:05:52 -07:00
fat
fat: gcc 4.3 warning fix
2007-07-16 09:05:42 -07:00
freevxfs
vxfs warning fixes
2007-07-16 09:05:41 -07:00
fuse
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
gfs2
Remove capability.h from mm.h
2007-07-16 09:05:45 -07:00
hfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
hfsplus
HFS+: add custom dentry hash and comparison operations
2007-07-16 09:05:49 -07:00
hostfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
hpfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
hppfs
[PATCH] Mark struct super_operations const
2007-02-12 09:48:47 -08:00
hugetlbfs
hugetlbfs: handle empty options string
2007-07-16 09:05:46 -07:00
isofs
remove useless tolower in isofs
2007-07-16 09:05:43 -07:00
jbd
is_power_of_2(): jbd
2007-07-16 09:05:48 -07:00
jbd2
is_power_of_2(): jbd
2007-07-16 09:05:48 -07:00
jffs2
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
jfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
lockd
NLM: fix source address of callback to client
2007-07-10 23:40:49 -04:00
minix
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
msdos
[PATCH] mark struct inode_operations const 2
2007-02-12 09:48:46 -08:00
ncpfs
Only send SIGXFSZ when exceeding rlimits.
2007-07-16 09:05:43 -07:00
nfs
Make NFS client use seq_list_xxx helpers
2007-07-16 09:05:42 -07:00
nfs_common
[PATCH] nfs_common endianness annotations
2006-10-20 10:26:41 -07:00
nfsd
Merge git://git.linux-nfs.org/pub/linux/nfs-2.6
2007-07-13 16:46:18 -07:00
nls
[PATCH] fs: make nls_cp936.c handle some U00XY characters and U20AC correctly
2006-12-07 08:39:46 -08:00
ntfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
ocfs2
sysfs: kill unnecessary attribute->owner
2007-07-11 16:09:06 -07:00
openpromfs
Remove SLAB_CTOR_CONSTRUCTOR
2007-05-17 05:23:04 -07:00
partitions
fix compiler warnings in acorn.c
2007-07-16 09:05:42 -07:00
proc
move seccomp from /proc to a prctl
2007-07-16 09:05:50 -07:00
qnx4
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
ramfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
reiserfs
Only send SIGXFSZ when exceeding rlimits.
2007-07-16 09:05:43 -07:00
romfs
Remove SLAB_CTOR_CONSTRUCTOR
2007-05-17 05:23:04 -07:00
smbfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
sysfs
sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes
2007-07-11 16:09:09 -07:00
sysv
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
udf
UDF: fix function name from udf_crc16 to udf_crc
2007-07-16 09:05:51 -07:00
ufs
is_power_of_2: ufs/super.c
2007-07-16 09:05:50 -07:00
vfat
[PATCH] mark struct inode_operations const 3
2007-02-12 09:48:46 -08:00
xfs
[XFS] Fix lockdep annotations for xfs_lock_inodes
2007-07-14 18:09:42 +10:00
aio.c
signal/timer/event: KAIO eventfd support example
2007-05-11 08:29:37 -07:00
anon_inodes.c
Fix trivial typos in anon_inodes.c comments
2007-07-16 09:05:52 -07:00
attr.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
bad_inode.c
sendfile: remove bad_sendfile() from bad_file_ops
2007-07-10 08:04:15 +02:00
binfmt_aout.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
binfmt_elf_fdpic.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
binfmt_elf.c
binfmt_elf warning fix
2007-07-16 09:05:47 -07:00
binfmt_em86.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
binfmt_flat.c
nommu: report correct errno in message
2007-06-08 17:23:32 -07:00
binfmt_misc.c
Detach sched.h from mm.h
2007-05-21 09:18:19 -07:00
binfmt_script.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
binfmt_som.c
[PARISC] Fix fs/binfmt_som.c
2006-10-04 06:51:26 -06:00
bio.c
unexport bio_{,un}map_user
2007-07-10 08:03:34 +02:00
block_dev.c
bd_claim_by_disk: fix warning
2007-07-16 09:05:50 -07:00
buffer.c
buffer: kill old incorrect comment
2007-07-16 09:05:45 -07:00
char_dev.c
[PATCH] remove protection of LANANA-reserved majors
2007-04-04 21:12:47 -07:00
compat_ioctl.c
fix compat console unimap regression
2007-05-25 17:37:46 -07:00
compat.c
optimize compat_core_sys_select() by a using stack space for small fd sets
2007-05-23 20:14:12 -07:00
dcache.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
dcookies.c
[PATCH] slab: remove kmem_cache_t
2006-12-07 08:39:25 -08:00
direct-io.c
dio: remove bogus refcounting BUG_ON
2007-07-03 18:23:23 -07:00
dnotify.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
dquot.c
circular locking dependency found in QUOTA OFF
2007-05-17 05:23:05 -07:00
drop_caches.c
invalidate_mapping_pages(): add cond_resched
2007-07-16 09:05:36 -07:00
eventfd.c
eventfd use waitqueue lock ...
2007-05-18 13:09:34 -07:00
eventpoll.c
epoll: move kfree inside ep_free
2007-05-15 08:54:00 -07:00
exec.c
uselib: add missing MNT_NOEXEC check
2007-05-23 20:14:13 -07:00
fcntl.c
[PATCH] fdtable: Make fdarray and fdsets equal in size
2006-12-10 09:57:22 -08:00
fifo.c
Detach sched.h from mm.h
2007-05-21 09:18:19 -07:00
file_table.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
file.c
[PATCH] fdtable: Provide free_fdtable() wrapper
2006-12-22 08:55:50 -08:00
filesystems.c
add filesystem subtype support
2007-05-08 11:15:01 -07:00
fs-writeback.c
Write back inode data pages even when the inode itself is locked
2007-01-26 12:53:20 -08:00
generic_acl.c
[PATCH] Generic infrastructure for acls
2006-09-29 09:18:24 -07:00
inode.c
Remove SLAB_CTOR_CONSTRUCTOR
2007-05-17 05:23:04 -07:00
inotify_user.c
[PATCH] inotify: read return val fix
2007-02-12 09:48:28 -08:00
inotify.c
Introduce a handy list_first_entry macro
2007-05-08 11:15:11 -07:00
internal.h
cleanup compat ioctl handling
2007-05-08 11:15:09 -07:00
ioctl.c
drop obsolete sys_ioctl export
2007-07-16 09:05:48 -07:00
ioprio.c
[PATCH] pid: replace do/while_each_task_pid with do/while_each_pid_task
2007-02-12 09:48:32 -08:00
Kconfig
9p: Reorganization of 9p file system code
2007-07-14 15:13:40 -05:00
Kconfig.binfmt
fs: Kill sh dependency for binfmt_flat.
2007-05-21 14:34:00 +09:00
libfs.c
fs/libfs.c: >80 columns line break fix
2007-05-09 06:44:57 +02:00
locks.c
Remove SLAB_CTOR_CONSTRUCTOR
2007-05-17 05:23:04 -07:00
Makefile
signal/timer/event: eventfd core
2007-05-11 08:29:36 -07:00
mbcache.c
[PATCH] slab: remove kmem_cache_t
2006-12-07 08:39:25 -08:00
mpage.c
consolidate generic_writepages and mpage_writepages
2007-05-11 08:29:35 -07:00
namei.c
[PATCH] complete message queue auditing
2007-05-11 05:38:26 -04:00
namespace.c
fs/namespace.c should #include "internal.h"
2007-07-16 09:05:50 -07:00
nfsctl.c
…
no-block.c
[PATCH] BLOCK: Make it possible to disable the block layer [try #6]
2006-09-30 20:52:31 +02:00
open.c
O_CLOEXEC for SCM_RIGHTS
2007-07-16 09:05:45 -07:00
pipe.c
pipe: add documentation and comments
2007-07-10 08:04:16 +02:00
pnode.c
Introduce a handy list_first_entry macro
2007-05-08 11:15:11 -07:00
pnode.h
[PATCH] rename struct namespace to struct mnt_namespace
2006-12-08 08:28:51 -08:00
posix_acl.c
[PATCH] kmemdup: some users
2006-10-01 00:39:19 -07:00
quota_v1.c
…
quota_v2.c
…
quota.c
diskquota: 32bit quota tools on 64bit architectures
2007-07-16 09:05:48 -07:00
read_write.c
Remove remnants of sendfile()
2007-07-10 08:04:15 +02:00
read_write.h
[PATCH] Remove readv/writev methods and use aio_read/aio_write instead
2006-10-01 00:39:28 -07:00
readdir.c
ROUND_UP macro cleanup in fs/(select|compat|readdir).c
2007-05-08 11:15:09 -07:00
select.c
Style fix in fs/select.c
2007-05-09 07:10:02 +02:00
seq_file.c
seq_file: more atomicity in traverse()
2007-07-16 09:05:45 -07:00
signalfd.c
avoid spurious POLLIN returns in signalfd
2007-06-28 11:34:54 -07:00
splice.c
splice: fix offset mangling with direct splicing (sendfile)
2007-07-13 14:14:31 +02:00
stack.c
[PATCH] fs/stack.c: Copy i_nlink after all other attributes are copied
2007-02-19 14:21:50 -08:00
stat.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
super.c
hugetlbfs: handle empty options string
2007-07-16 09:05:46 -07:00
sync.c
Introduce fixed sys_sync_file_range2() syscall, implement on PowerPC and ARM
2007-06-28 11:38:30 -07:00
timerfd.c
timerfd use waitqueue lock ...
2007-05-18 13:09:34 -07:00
utimes.c
Fix permission checking for the new utimensat() system call
2007-07-08 12:02:55 -07:00
xattr_acl.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
xattr.c
[PATCH] audit inode for all xattr syscalls
2007-05-11 05:38:26 -04:00