Josef Bacik 9fc7c63a1d jbd2: fix the way the b_modified flag is cleared ... Currently at the start of a journal commit we loop through all of the buffers on the committing transaction and clear the b_modified flag (the flag that is set when a transaction modifies the buffer) under the j_list_lock. The problem is that everywhere else this flag is modified only under the jbd2 lock buffer flag, so it will race with a running transaction who could potentially set it, and have it unset by the committing transaction. This is also a big waste, you can have several thousands of buffers that you are clearing the modified flag on when you may not need to. This patch removes this code and instead clears the b_modified flag upon entering do_get_write_access/journal_get_create_access, so if that transaction does indeed use the buffer then it will be accounted for properly, and if it does not then we know we didn't use it. That will be important for the next patch in this series. Tested thoroughly by myself using postmark/iozone/bonnie++. Cc: <linux-ext4@vger.kernel.org> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Josef Bacik <jbacik@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>		2008-04-17 10:38:59 -04:00
..
9p	[PATCH] restore sane ->umount_begin() API	2008-04-25 09:23:25 -04:00
adfs	adfs: work around bogus sparse warning	2008-04-29 08:05:59 -07:00
affs	fs/affs/file.c: use BUG_ON	2008-04-29 08:06:02 -07:00
afs	afs: support the CB.ProbeUuid RPC op	2008-04-29 08:06:26 -07:00
autofs
autofs4	autofs4: fix sparse warning in root.c	2008-04-29 08:06:01 -07:00
befs	befs: fix sparse warning in linuxvfs.c	2008-04-29 08:05:59 -07:00
bfs
cifs	proc: remove proc_root_fs	2008-04-29 08:06:18 -07:00
coda	codafs: fix build warning	2008-04-29 08:06:04 -07:00
configfs
cramfs	fs: Remove unnecessary inclusions of asm/semaphore.h	2008-04-18 22:16:44 -04:00
debugfs
devpts
dlm	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm	2008-04-22 13:44:23 -07:00
ecryptfs	Remove duplicated unlikely() in IS_ERR()	2008-04-29 08:06:25 -07:00
efs	efs: update error msg to not refer to deleted read_inode()	2008-04-02 15:28:19 -07:00
exportfs
ext2	ext2: retry block allocation if new blocks are allocated from system zone	2008-04-28 08:58:43 -07:00
ext3	ext3: replace remaining __FUNCTION__ occurrences	2008-04-28 08:58:45 -07:00
ext4	ext4: use non-racy method for proc entries creation	2008-04-29 08:06:20 -07:00
fat	fat: use get/put_unaligned_* helpers	2008-04-29 08:06:28 -07:00
freevxfs	fs/freevxfs/: proper externs	2008-04-29 08:06:00 -07:00
fuse	[PATCH] restore sane ->umount_begin() API	2008-04-25 09:23:25 -04:00
gfs2	mm: remove nopage	2008-04-28 08:58:18 -07:00
hfs	hfs: handle match_strdup failure	2008-04-29 08:06:01 -07:00
hfsplus	trivial: fix user-visible typo in hfsplus	2008-04-29 13:23:21 -07:00
hostfs
hpfs
hppfs	[PATCH] sanitize hppfs	2008-03-19 06:42:18 -04:00
hugetlbfs	mempolicy: use struct mempolicy pointer in shmem_sb_info	2008-04-28 08:58:25 -07:00
isofs	isofs: use get/put_unaligned_* helpers	2008-04-29 08:06:28 -07:00
jbd	jbd: replace remaining __FUNCTION__ occurrences	2008-04-28 08:58:45 -07:00
jbd2	jbd2: fix the way the b_modified flag is cleared	2008-04-17 10:38:59 -04:00
jffs2	[JFFS2] Introduce dbg_readinode2 log level, use it to shut read_dnode() up	2008-04-23 16:43:15 +01:00
jfs	proc: remove proc_root_fs	2008-04-29 08:06:18 -07:00
lockd	locks: don't call ->copy_lock methods on return of conflicting locks	2008-04-25 13:00:11 -04:00
minix
msdos	fat: fat_notify_change() and check_mode() cleanup	2008-04-28 08:58:47 -07:00
ncpfs	ncpfs: use get/put_unaligned_* helpers	2008-04-29 08:06:28 -07:00
nfs	nfs: use proc_create to setup de->proc_fops	2008-04-29 08:06:20 -07:00
nfs_common
nfsd	nfsd: use proc_create to setup de->proc_fops	2008-04-29 08:06:20 -07:00
nls
ntfs	Remove duplicated unlikely() in IS_ERR()	2008-04-29 08:06:25 -07:00
ocfs2	[PATCH] r/o bind mounts: elevate write count for ioctls()	2008-04-19 00:29:24 -04:00
openpromfs
partitions	fat: detect media without partition table correctly	2008-04-28 08:58:47 -07:00
proc	sysctl: add the ->permissions callback on the ctl_table_root	2008-04-29 08:06:23 -07:00
qnx4
ramfs	fs/ramfs/ extern cleanup	2008-04-29 08:06:00 -07:00
reiserfs	reiserfs: use non-racy method for proc entries creation	2008-04-29 08:06:20 -07:00
romfs	ROMFS: Fix up an error in iget removal	2008-03-19 18:53:36 -07:00
smbfs	NULL noise: fs/*, mm/*, kernel/*	2008-03-30 14:18:41 -07:00
sysfs	[SCSI] sysfs: make group is_valid return a mode_t	2008-04-22 15:16:31 -05:00
sysv
udf	udf: fix sparse warning in namei.c	2008-04-28 08:58:46 -07:00
ufs	ufs: replace __inline with inline	2008-04-28 08:58:45 -07:00
vfat	fat: use __getname()	2008-04-28 08:58:47 -07:00
xfs	Merge branch 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc	2008-04-21 15:41:27 -07:00
aio.c	aio: fix misleading comments	2008-04-29 08:06:29 -07:00
anon_inodes.c	[PATCH] fix up new filp allocators	2008-03-19 06:54:05 -04:00
attr.c
bad_inode.c
binfmt_aout.c	fs/binfmt_aout.c: use printk_ratelimit()	2008-04-29 08:06:04 -07:00
binfmt_elf.c	elf: fix shadowed variables in fs/binfmt_elf.c	2008-04-29 08:06:16 -07:00
binfmt_elf_fdpic.c	fdpic: check that the size returned by kernel_read() is what we asked for	2008-04-29 08:06:05 -07:00
binfmt_em86.c	binfmt_misc.c: avoid potential kernel stack overflow	2008-04-29 08:06:04 -07:00
binfmt_flat.c	procfs task exe symlink	2008-04-29 08:06:17 -07:00
binfmt_misc.c	binfmt_misc.c: avoid potential kernel stack overflow	2008-04-29 08:06:04 -07:00
binfmt_script.c	binfmt_misc.c: avoid potential kernel stack overflow	2008-04-29 08:06:04 -07:00
binfmt_som.c	[PATCH] sanitize handling of shared descriptor tables in failing execve()	2008-04-25 09:23:53 -04:00
bio.c	block: add dma alignment and padding support to blk_rq_map_kern	2008-04-29 09:50:34 +02:00
block_dev.c
buffer.c	make fs/buffer.c:cont_expand_zero() static	2008-04-29 08:06:01 -07:00
char_dev.c	fs: remove unused fops from struct char_device_struct	2008-04-29 08:06:01 -07:00
compat.c
compat_binfmt_elf.c
compat_ioctl.c
dcache.c	[patch 2/7] vfs: mountinfo: add seq_file_root()	2008-04-23 00:04:38 -04:00
dcookies.c
direct-io.c
dnotify.c
dquot.c	quota: quota core changes for quotaon on remount	2008-04-28 08:58:33 -07:00
drop_caches.c	vfs: skip inodes without pages to free in drop_pagecache_sb()	2008-04-29 08:06:05 -07:00
eventfd.c
eventpoll.c	epoll: avoid kmemcheck warning	2008-04-29 08:05:59 -07:00
exec.c	procfs task exe symlink	2008-04-29 08:06:17 -07:00
fcntl.c	[PATCH] sanitize locate_fd()	2008-04-25 09:24:05 -04:00
fifo.c
file.c
file_table.c	[PATCH] r/o bind mounts: debugging for missed calls	2008-04-19 00:29:28 -04:00
filesystems.c
fs-writeback.c	fs/fs-writeback.c: make 2 functions static	2008-04-29 08:06:00 -07:00
generic_acl.c
inode.c	fs/inode.c: use hlist_for_each_entry()	2008-04-29 08:06:06 -07:00
inotify.c
inotify_user.c	Remove duplicated unlikely() in IS_ERR()	2008-04-29 08:06:25 -07:00
internal.h	[PATCH] move a bunch of declarations to fs/internal.h	2008-04-21 23:11:01 -04:00
ioctl.c	make vfs_ioctl() static	2008-04-29 08:06:00 -07:00
ioprio.c
Kconfig	Merge git://git.linux-nfs.org/projects/trondmy/nfs-2.6	2008-04-24 11:46:16 -07:00
Kconfig.binfmt	make BINFMT_FLAT a bool	2008-04-29 08:06:01 -07:00
libfs.c
locks.c	Export __locks_copy_lock() so modular lockd builds	2008-04-25 15:49:46 -07:00
Makefile
mbcache.c	vfs: fix possible deadlock in ext2, ext3, ext4 when using xattrs	2008-04-15 19:35:41 -07:00
mpage.c
namei.c	cgroups: implement device whitelist	2008-04-29 08:06:09 -07:00
namespace.c	vfs: remove lives_below_in_same_fs()	2008-04-29 08:06:06 -07:00
nfsctl.c
no-block.c
open.c	xip: support non-struct page backed memory	2008-04-28 08:58:23 -07:00
pipe.c	[PATCH] double-free of inode on alloc_file() failure exit in create_write_pipe()	2008-04-22 19:54:57 -04:00
pnode.c	[patch 7/7] vfs: mountinfo: show dominating group id	2008-04-23 00:05:09 -04:00
pnode.h	[patch 7/7] vfs: mountinfo: show dominating group id	2008-04-23 00:05:09 -04:00
posix_acl.c
quota.c	quota: quota core changes for quotaon on remount	2008-04-28 08:58:33 -07:00
quota_v1.c	quota: do not allow setting of quota limits to too high values	2008-04-28 08:58:32 -07:00
quota_v2.c	quota: do not allow setting of quota limits to too high values	2008-04-28 08:58:32 -07:00
read_write.c	fs: use loff_t type instead of long long	2008-04-22 15:17:11 -07:00
read_write.h
readdir.c
select.c	trivial: small cleanups	2008-04-21 22:15:06 +00:00
seq_file.c	[patch 2/7] vfs: mountinfo: add seq_file_root()	2008-04-23 00:04:38 -04:00
signalfd.c	signalfd: fix for incorrect SI_QUEUE user data reporting	2008-04-11 08:06:44 -07:00
splice.c	relay: fix splice problem	2008-04-29 09:48:15 +02:00
stack.c
stat.c
super.c	make __put_super() static	2008-04-29 08:06:00 -07:00
sync.c	vfs: fix unconditional write_super() call in file_fsync()	2008-04-29 08:06:06 -07:00
timerfd.c	fs/timerfd.c should #include <linux/syscalls.h>	2008-04-29 08:06:01 -07:00
utimes.c	[PATCH] r/o bind mounts: elevate write count for do_utimes()	2008-04-19 00:29:24 -04:00
xattr.c	xattr: add missing consts to function arguments	2008-04-29 08:06:06 -07:00
xattr_acl.c