Jens Axboe b31dc66a54 [PATCH] Kill PF_SYNCWRITE flag ...

A process flag to indicate whether we are doing sync io is incredibly
ugly. It also causes performance problems when one does a lot of async
io and then proceeds to sync it. Part of the io will go out as async,
and the other part as sync. This causes a disconnect between the
previously submitted io and the synced io. For io schedulers such as CFQ,
this will cause us lost merges and suboptimal behaviour in scheduling.

Remove PF_SYNCWRITE completely from the fsync/msync paths, and let
the O_DIRECT path just directly indicate that the writes are sync
by using WRITE_SYNC instead.

Signed-off-by: Jens Axboe <axboe@suse.de>

2006-06-23 17:10:39 +02:00

..

9p

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

adfs

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

affs

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

afs

[PATCH] read_mapping_page for address space

2006-06-23 07:43:02 -07:00

autofs

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

autofs4

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

befs

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

bfs

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

cifs

[PATCH] vfs: add lock owner argument to flush operation

2006-06-23 07:43:02 -07:00

coda

[PATCH] vfs: add lock owner argument to flush operation

2006-06-23 07:43:02 -07:00

configfs

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

cramfs

[PATCH] read_mapping_page for address space

2006-06-23 07:43:02 -07:00

debugfs

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

devfs

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

devpts

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

efs

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

exportfs

[PATCH] NFS server subtree_check returns dubious value

2006-05-21 12:59:16 -07:00

ext2

[PATCH] percpu counter data type changes to suppport more than 2**31 ext3 free blocks counter

2006-06-23 07:43:06 -07:00

ext3

[PATCH] percpu counter data type changes to suppport more than 2**31 ext3 free blocks counter

2006-06-23 07:43:06 -07:00

fat

[PATCH] fs/fat/misc.c: unexport fat_sync_bhs

2006-06-23 07:43:03 -07:00

freevxfs

[PATCH] read_mapping_page for address space

2006-06-23 07:43:02 -07:00

fuse

[PATCH] vfs: add lock owner argument to flush operation

2006-06-23 07:43:02 -07:00

hfs

[PATCH] read_mapping_page for address space

2006-06-23 07:43:02 -07:00

hfsplus

[PATCH] read_mapping_page for address space

2006-06-23 07:43:02 -07:00

hostfs

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

hpfs

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

hppfs

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

hugetlbfs

[PATCH] tightening hugetlb strict accounting

2006-06-23 07:42:48 -07:00

isofs

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

jbd

[PATCH] JBD: split checkpoint lists

2006-06-23 07:43:08 -07:00

jffs

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

jffs2

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

jfs

[PATCH] read_mapping_page for address space

2006-06-23 07:43:02 -07:00

lockd

NFS: make 2 functions static

2006-04-19 12:43:47 -04:00

minix

[PATCH] read_mapping_page for address space

2006-06-23 07:43:02 -07:00

msdos

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

ncpfs

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

nfs

[PATCH] vfs: add lock owner argument to flush operation

2006-06-23 07:43:02 -07:00

nfs_common

[PATCH] nfsacl: Solaris VxFS compatibility fix

2005-10-11 09:46:54 -07:00

nfsd

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

nls

[PATCH] fs: Use ARRAY_SIZE macro

2006-03-24 07:33:19 -08:00

ntfs

[PATCH] read_mapping_page for address space

2006-06-23 07:43:02 -07:00

ocfs2

[PATCH] read_mapping_page for address space

2006-06-23 07:43:02 -07:00

openpromfs

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

partitions

[PATCH] make kernel warn about incorrectly sized partitions

2006-06-23 07:43:09 -07:00

proc

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

qnx4

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

ramfs

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

reiserfs

[PATCH] read_mapping_page for address space

2006-06-23 07:43:02 -07:00

romfs

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

smbfs

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

sysfs

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

sysv

[PATCH] read_mapping_page for address space

2006-06-23 07:43:02 -07:00

udf

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

ufs

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

vfat

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

xfs

[PATCH] for_each_possible_cpu: xfs

2006-06-23 07:42:45 -07:00

aio.c

[PATCH] list: use list_replace_init() instead of list_splice_init()

2006-06-23 07:43:07 -07:00

attr.c

[PATCH] capable/capability.h (fs/)

2006-01-11 18:42:13 -08:00

bad_inode.c

[PATCH] Make most file operations structs in fs/ const

2006-03-28 09:16:06 -08:00

binfmt_aout.c

[PATCH] dump_thread() cleanup

2006-01-10 08:01:25 -08:00

binfmt_elf_fdpic.c

[PATCH] frv: binfmt_elf_fdpic __user annotations

2006-06-23 07:42:54 -07:00

binfmt_elf.c

[PATCH] binflt_elf: remove more casts

2006-06-23 07:43:05 -07:00

binfmt_em86.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

binfmt_flat.c

[PATCH] binfmt_flat: don't check for EMFILE

2006-05-21 12:59:17 -07:00

binfmt_misc.c

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

binfmt_script.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

binfmt_som.c

[PATCH] mm: mm_init set_mm_counters

2005-10-29 21:40:38 -07:00

bio.c

[PATCH] Fix missing ret assignment in __bio_map_user() error path

2006-06-17 10:52:12 -07:00

block_dev.c

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

buffer.c

[PATCH] Kill PF_SYNCWRITE flag

2006-06-23 17:10:39 +02:00

char_dev.c

[PATCH] Simplify proc/devices and fix early termination regression

2006-03-31 12:18:53 -08:00

compat_ioctl.c

[PATCH] fs: Use ARRAY_SIZE macro

2006-03-24 07:33:19 -08:00

compat.c

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

dcache.c

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

dcookies.c

[PATCH] Use __read_mostly on some hot fs variables

2006-03-26 08:56:56 -08:00

direct-io.c

[PATCH] Kill PF_SYNCWRITE flag

2006-06-23 17:10:39 +02:00

dnotify.c

[PATCH] Use __read_mostly on some hot fs variables

2006-03-26 08:56:56 -08:00

dquot.c

BUG_ON() Conversion in fs/dquot.c

2006-04-02 13:36:13 +02:00

drop_caches.c

[PATCH] drop-pagecache

2006-01-08 20:12:40 -08:00

eventpoll.c

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

exec.c

[PATCH] remove steal_locks()

2006-06-22 15:05:57 -07:00

fcntl.c

BUG_ON() Conversion in fs/fcntl.c

2006-04-02 13:37:19 +02:00

fifo.c

[PATCH] pipe.c/fifo.c code cleanups

2006-04-11 13:53:33 +02:00

file_table.c

[PATCH] percpu counter data type changes to suppport more than 2**31 ext3 free blocks counter

2006-06-23 07:43:06 -07:00

file.c

[PATCH] for_each_possible_cpu: fixes for generic part

2006-03-28 09:16:05 -08:00

filesystems.c

[PATCH] fix missing includes

2005-10-30 17:37:32 -08:00

fs-writeback.c

[PATCH] Kill PF_SYNCWRITE flag

2006-06-23 17:10:39 +02:00

inode.c

BUG_ON() Conversion in fs/inode.c

2006-04-02 13:38:18 +02:00

inotify_user.c

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

inotify.c

[PATCH] inotify (4/5): allow watch removal from event handler

2006-06-20 05:25:19 -04:00

ioctl.c

[PATCH] capable/capability.h (fs/)

2006-01-11 18:42:13 -08:00

ioprio.c

[PATCH] lsm: add task_setioprio hook

2006-06-23 07:42:53 -07:00

Kconfig

[PATCH] ext2 XIP won't build without MMU

2006-06-23 07:42:55 -07:00

Kconfig.binfmt

[PATCH] frv: suppress configuration of certain features for FRV

2006-01-08 20:13:36 -08:00

libfs.c

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

locks.c

[PATCH] fs/locks.c: make posix_locks_deadlock() static

2006-06-23 07:43:03 -07:00

Makefile

[PATCH] inotify (1/5): split kernel API from userspace support

2006-06-20 05:25:17 -04:00

mbcache.c

[PATCH] Typo fixes

2006-03-28 09:16:08 -08:00

mpage.c

[PATCH] writeback: fix range handling

2006-06-23 07:42:49 -07:00

namei.c

[PATCH] read_mapping_page for address space

2006-06-23 07:43:02 -07:00

namespace.c

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

nfsctl.c

[PATCH] fs: Use ARRAY_SIZE macro

2006-03-24 07:33:19 -08:00

open.c

[PATCH] vfs: add lock owner argument to flush operation

2006-06-23 07:43:02 -07:00

pipe.c

[PATCH] VFS: Permit filesystem to override root dentry on mount

2006-06-23 07:42:45 -07:00

pnode.c

[PATCH] s/;;/;/g

2006-03-24 07:33:24 -08:00

pnode.h

[PATCH] unbindable mounts

2005-11-07 18:18:11 -08:00

posix_acl.c

[PATCH] gfp flags annotations - part 1

2005-10-08 15:00:57 -07:00

quota_v1.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

quota_v2.c

[PATCH] sem2mutex: quota

2006-03-23 07:38:11 -08:00

quota.c

[PATCH] sem2mutex: quota

2006-03-23 07:38:11 -08:00

read_write.c

[PATCH] splice: unlikely() optimizations

2006-04-11 13:56:09 +02:00

readdir.c

[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem

2006-01-09 15:59:24 -08:00

select.c

[PATCH] Poll cleanups/microoptimizations

2006-06-23 07:43:03 -07:00

seq_file.c

[PATCH] sem2mutex: fs/seq_file.c

2006-03-23 07:38:12 -08:00

splice.c

[PATCH] splice: redo page lookup if add_to_page_cache() returns -EEXIST

2006-05-04 06:55:12 +02:00

stat.c

[PATCH] powerpc: Wire up *at syscalls

2006-04-28 21:04:59 +10:00

super.c

[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

2006-06-23 07:42:45 -07:00

sync.c

[PATCH] writeback: fix range handling

2006-06-23 07:42:49 -07:00

xattr_acl.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

xattr.c

[PATCH] log more info for directory entry change events

2006-06-20 05:25:28 -04:00