Nick Piggin 4f5a99d64c fs: remove WB_SYNC_HOLD ... Remove WB_SYNC_HOLD. The primary motiviation is the design of my anti-starvation code for fsync. It requires taking an inode lock over the sync operation, so we could run into lock ordering problems with multiple inodes. It is possible to take a single global lock to solve the ordering problem, but then that would prevent a future nice implementation of "sync multiple inodes" based on lock order via inode address. Seems like a backward step to remove this, but actually it is busted anyway: we can't use the inode lists for data integrity wait: an inode can be taken off the dirty lists but still be under writeback. In order to satisfy data integrity semantics, we should wait for it to finish writeback, but if we only search the dirty lists, we'll miss it. It would be possible to have a "writeback" list, for sys_sync, I suppose. But why complicate things by prematurely optimise? For unmounting, we could avoid the "livelock avoidance" code, which would be easier, but again premature IMO. Fixing the existing data integrity problem will come next. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2009-01-06 15:59:09 -08:00
..
9p	Merge branch 'next' into for-linus	2008-12-25 11:40:09 +11:00
adfs
affs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2009-01-05 18:32:06 -08:00
afs	fs: symlink write_begin allocation context fix	2009-01-04 13:33:20 -08:00
autofs	zero i_uid/i_gid on inode allocation	2009-01-05 11:54:28 -05:00
autofs4	zero i_uid/i_gid on inode allocation	2009-01-05 11:54:28 -05:00
befs	befs: ensure fast symlinks are NUL-terminated	2008-12-31 18:07:40 -05:00
bfs	CRED: Wrap task credential accesses in the BFS filesystem	2008-11-14 10:38:47 +11:00
cifs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2009-01-05 18:32:06 -08:00
coda	add a vfs_fsync helper	2009-01-05 11:54:28 -05:00
configfs	zero i_uid/i_gid on inode allocation	2009-01-05 11:54:28 -05:00
cramfs	zero i_uid/i_gid on inode allocation	2009-01-05 11:54:28 -05:00
debugfs	zero i_uid/i_gid on inode allocation	2009-01-05 11:54:28 -05:00
devpts	zero i_uid/i_gid on inode allocation	2009-01-05 11:54:28 -05:00
dlm	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm	2009-01-05 19:02:09 -08:00
ecryptfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2009-01-05 18:32:06 -08:00
efs
exportfs	Merge branch 'next' into for-linus	2008-12-25 11:40:09 +11:00
ext2	nfsd race fixes: ext2	2008-12-31 18:07:43 -05:00
ext3	ext3: Add default allocation routines for quota structures	2009-01-05 08:40:25 -08:00
ext4	ext4: Add default allocation routines for quota structures	2009-01-05 08:40:26 -08:00
fat	Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6	2008-12-30 20:33:34 -08:00
freevxfs	freevxfs: ensure fast symlinks are NUL-terminated	2008-12-31 18:07:40 -05:00
fuse	fs: symlink write_begin allocation context fix	2009-01-04 13:33:20 -08:00
gfs2	GFS2: Use DEFINE_SPINLOCK	2009-01-05 07:45:02 +00:00
hfs	CRED: Wrap task credential accesses in the HFS filesystem	2008-11-14 10:38:54 +11:00
hfsplus	CRED: Wrap task credential accesses in the HFSplus filesystem	2008-11-14 10:38:54 +11:00
hostfs	fs: symlink write_begin allocation context fix	2009-01-04 13:33:20 -08:00
hpfs	CRED: Wrap task credential accesses in the HPFS filesystem	2008-11-14 10:38:55 +11:00
hppfs	CRED: Use creds in file structs	2008-11-14 10:39:25 +11:00
hugetlbfs	hugetlb: unsigned ret cannot be negative	2009-01-06 15:59:08 -08:00
isofs	isofs check for NULL ->i_op in root directory is dead code	2009-01-05 11:53:38 -05:00
jbd	jbd: don't give up looking for space so easily in __log_wait_for_space	2008-11-06 22:37:59 -05:00
jbd2	jbd2: Add buffer triggers	2009-01-05 08:40:30 -08:00
jffs2	fs: symlink write_begin allocation context fix	2009-01-04 13:33:20 -08:00
jfs	fix the treatment of jfs special inodes	2009-01-05 11:54:29 -05:00
lockd	Merge branch 'devel' into next	2008-12-30 16:51:43 -05:00
minix	CRED: Wrap task credential accesses in the Minix filesystem	2008-11-14 10:38:57 +11:00
ncpfs	CRED: Wrap task credential accesses in the NCPFS filesystem	2008-11-14 10:38:58 +11:00
nfs	fs: symlink write_begin allocation context fix	2009-01-04 13:33:20 -08:00
nfs_common	SUNRPC: nfsacl_encode/nfsacl_decode should be exported as GPL-only	2008-12-23 15:21:32 -05:00
nfsd	add a vfs_fsync helper	2009-01-05 11:54:28 -05:00
nls
notify	inotify: fix type errors in interfaces	2009-01-05 11:54:29 -05:00
ntfs	ntfs: don't NULL i_op	2009-01-05 11:54:27 -05:00
ocfs2	Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2	2009-01-05 18:32:43 -08:00
omfs	zero i_uid/i_gid on inode allocation	2009-01-05 11:54:28 -05:00
openpromfs	zero i_uid/i_gid on inode allocation	2009-01-05 11:54:28 -05:00
partitions	block/md: fix md autodetection	2008-11-18 15:08:56 +01:00
proc	mm: report the MMU pagesize in /proc/pid/smaps	2009-01-06 15:58:58 -08:00
qnx4
ramfs	zero i_uid/i_gid on inode allocation	2009-01-05 11:54:28 -05:00
reiserfs	Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2	2009-01-05 18:32:43 -08:00
romfs	zero i_uid/i_gid on inode allocation	2009-01-05 11:54:28 -05:00
smbfs	fs: symlink write_begin allocation context fix	2009-01-04 13:33:20 -08:00
sysfs	zero i_uid/i_gid on inode allocation	2009-01-05 11:54:28 -05:00
sysv	sysv: ensure fast symlinks are NUL-terminated	2008-12-31 18:07:39 -05:00
ubifs	UBIFS: do not use WB_SYNC_HOLD	2009-01-06 15:59:09 -08:00
udf	Merge branch 'master' into next	2008-12-04 17:16:36 +11:00
ufs	CRED: Wrap task credential accesses in the UFS filesystem	2008-11-14 10:39:04 +11:00
xfs	[XFS] Fix merge failures	2008-12-29 16:47:18 +11:00
aio.c	aio: make the lookup_ioctx() lockless	2008-12-29 08:29:50 +01:00
anon_inodes.c	anon_inodes: use fops->owner for module refcount	2008-12-31 16:55:44 +02:00
attr.c	CRED: Wrap task credential accesses in the filesystem subsystem	2008-11-14 10:39:05 +11:00
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.c	Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6	2008-12-28 12:33:21 -08:00
binfmt_elf_fdpic.c	CRED: Make execve() take advantage of copy-on-write credentials	2008-11-14 10:39:24 +11:00
binfmt_em86.c
binfmt_flat.c	CRED: Make execve() take advantage of copy-on-write credentials	2008-11-14 10:39:24 +11:00
binfmt_misc.c	zero i_uid/i_gid on inode allocation	2009-01-05 11:54:28 -05:00
binfmt_script.c
binfmt_som.c	CRED: Make execve() take advantage of copy-on-write credentials	2008-11-14 10:39:24 +11:00
bio-integrity.c	bio: allow individual slabs in the bio_set	2008-12-29 08:29:23 +01:00
bio.c	bio: get rid of bio_vec clearing	2008-12-29 08:29:53 +01:00
block_dev.c	fs/block_dev.c: __read_mostly improvement and sb_is_blkdev_sb utilization	2008-12-31 18:07:43 -05:00
buffer.c	block_write_begin(): remove useless goto	2009-01-06 15:59:08 -08:00
char_dev.c
compat.c	CRED: Make execve() take advantage of copy-on-write credentials	2008-11-14 10:39:24 +11:00
compat_binfmt_elf.c
compat_ioctl.c
dcache.c	filp_cachep can be static in fs/file_table.c	2008-12-31 18:07:42 -05:00
dcookies.c	shrink struct dentry	2008-12-31 18:07:38 -05:00
direct-io.c	fs: truncate blocks outside i_size after O_DIRECT write error	2009-01-06 15:59:06 -08:00
dquot.c	quota: Export dquot_alloc() and dquot_destroy() functions	2009-01-05 08:40:25 -08:00
drop_caches.c
eventfd.c
eventpoll.c	epoll: introduce resource usage limits	2008-12-01 19:55:24 -08:00
exec.c	sys_execve and sys_uselib do not call into fsnotify	2009-01-05 11:54:28 -05:00
fcntl.c	Merge branch 'next' into for-linus	2008-12-25 11:40:09 +11:00
fifo.c
file.c
file_table.c	filp_cachep can be static in fs/file_table.c	2008-12-31 18:07:42 -05:00
filesystems.c	vfs: remove duplicate code in get_fs_type()	2009-01-05 11:54:29 -05:00
fs-writeback.c	fs: remove WB_SYNC_HOLD	2009-01-06 15:59:09 -08:00
generic_acl.c
inode.c	mm: remove GFP_HIGHUSER_PAGECACHE	2009-01-06 15:59:01 -08:00
internal.h	CRED: Make execve() take advantage of copy-on-write credentials	2008-11-14 10:39:24 +11:00
ioctl.c	GFS2: Support for FIEMAP ioctl	2009-01-05 07:38:46 +00:00
ioprio.c	CRED: Use RCU to access another task's creds and to release a task's own creds	2008-11-14 10:39:19 +11:00
Kconfig	ocfs2: Assign feature bits and system inodes to quota feature and quota files	2009-01-05 08:40:23 -08:00
Kconfig.binfmt
libfs.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2009-01-05 18:32:06 -08:00
locks.c	CRED: Wrap task credential accesses in the filesystem subsystem	2008-11-14 10:39:05 +11:00
Makefile	quota: Split off quota tree handling into a separate file	2009-01-05 08:40:21 -08:00
mbcache.c
mpage.c	do_mpage_readpage(): remove useless clear_buffer_mapped() call	2009-01-06 15:59:01 -08:00
namei.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2009-01-05 18:32:06 -08:00
namespace.c	fs/namespace.c: drop code after return	2008-12-31 18:07:38 -05:00
nfsctl.c	pass a struct path * to may_open	2008-12-31 18:07:41 -05:00
no-block.c
open.c	inode->i_op is never NULL	2009-01-05 11:54:28 -05:00
pipe.c	sanitize audit_fd_pair()	2009-01-04 15:14:41 -05:00
pnode.c
pnode.h
posix_acl.c	CRED: Wrap task credential accesses in the filesystem subsystem	2008-11-14 10:39:05 +11:00
quota.c	quota: Introduce DQUOT_QUOTA_SYS_FILE flag	2009-01-05 08:36:57 -08:00
quota_tree.c	quota: Split off quota tree handling into a separate file	2009-01-05 08:40:21 -08:00
quota_tree.h	quota: Split off quota tree handling into a separate file	2009-01-05 08:40:21 -08:00
quota_v1.c	quota: Move quotaio_v[12].h from include/linux/ to fs/	2009-01-05 08:36:58 -08:00
quota_v2.c	quota: Convert union in mem_dqinfo to a pointer	2009-01-05 08:40:21 -08:00
quotaio_v1.h	quota: Move quotaio_v[12].h from include/linux/ to fs/	2009-01-05 08:36:58 -08:00
quotaio_v2.h	quota: Split off quota tree handling into a separate file	2009-01-05 08:40:21 -08:00
read_write.c	vfs: lseek(fd, 0, SEEK_CUR) race condition	2009-01-05 11:53:07 -05:00
read_write.h
readdir.c
select.c
seq_file.c	Merge branch 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-03 12:04:39 -08:00
signalfd.c
splice.c	fs: remove prepare_write/commit_write	2008-10-30 11:38:45 -07:00
stack.c
stat.c	inode->i_op is never NULL	2009-01-05 11:54:28 -05:00
super.c	security: pass mount flags to security_sb_kern_mount()	2008-12-20 09:02:39 +11:00
sync.c	mm: do_sync_mapping_range integrity fix	2009-01-06 15:59:00 -08:00
timerfd.c
utimes.c
xattr.c	inode->i_op is never NULL	2009-01-05 11:54:28 -05:00
xattr_acl.c