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Jens Axboe fc46379daf [PATCH] cfq-iosched: kill cfq_exit_lock 
cfq_exit_lock is protecting two things now:

- The per-ioc rbtree of cfq_io_contexts

- The per-cfqd linked list of cfq_io_contexts

The per-cfqd linked list can be protected by the queue lock, as it is (by
definition) per cfqd as the queue lock is.

The per-ioc rbtree is mainly used and updated by the process itself only.
The only outside use is the io priority changing. If we move the
priority changing to not browsing the rbtree, we can remove any locking
from the rbtree updates and lookup completely. Let the sys_ioprio syscall
just mark processes as having the iopriority changed and lazily update
the private cfq io contexts the next time io is queued, and we can
remove this locking as well.

Signed-off-by: Jens Axboe <axboe@suse.de>
2006-09-30 20:29:36 +02:00
..
9p
[PATCH] 9p: fix leak on error path
2006-09-29 09:18:20 -07:00
adfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
affs
[PATCH] Really ignore kmem_cache_destroy return value
2006-09-27 08:26:10 -07:00
afs
[PATCH] afs: add lock annotations to afs_proc_cell_servers_{start,stop}
2006-09-29 09:18:07 -07:00
autofs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
autofs4
[PATCH] autofs4: pending flag not cleared on mount fail
2006-09-29 09:18:18 -07:00
befs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
bfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
cifs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
coda
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
configfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
cramfs
[PATCH] cramfs: make cramfs_uncompress_exit() return void
2006-09-29 09:18:20 -07:00
debugfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
devpts
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
efs
[PATCH] Really ignore kmem_cache_destroy return value
2006-09-27 08:26:10 -07:00
exportfs
[PATCH] NFS server subtree_check returns dubious value
2006-05-21 12:59:16 -07:00
ext2
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
ext3
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
fat
[PATCH] add -o flush for fat
2006-09-29 09:18:12 -07:00
freevxfs
[PATCH] freevxfs: fix leak on error path
2006-09-29 09:18:20 -07:00
fuse
[PATCH] vfs: define new lookup flag for chdir
2006-09-29 09:18:08 -07:00
hfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
hfsplus
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
hostfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
hpfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
hppfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
hugetlbfs
[PATCH] hugetlbfs: add lock annotation to hugetlbfs_forget_inode()
2006-09-29 09:18:08 -07:00
isofs
[PATCH] I/O Error attempting to read last partial block of a file in an ISO9660 file system
2006-09-29 09:18:15 -07:00
jbd
[PATCH] JBD: memory leak in "journal_init_dev()"
2006-09-29 09:18:03 -07:00
jffs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
jffs2
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
jfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
lockd
[PATCH] add newline to nfs dprintk
2006-09-27 08:26:19 -07:00
minix
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
msdos
[PATCH] add -o flush for fat
2006-09-29 09:18:12 -07:00
ncpfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
nfs
[PATCH] fs/nfs/: make code static
2006-09-27 08:26:20 -07:00
nfs_common
…
nfsd
[PATCH] Really ignore kmem_cache_destroy return value
2006-09-27 08:26:10 -07:00
nls
Remove obsolete #include <linux/config.h>
2006-06-30 19:25:36 +02:00
ntfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
ocfs2
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
openpromfs
Move several *_SUPER_MAGIC symbols to include/linux/magic.h.
2006-09-24 11:13:19 -04:00
partitions
[PATCH] ignore partition table on disks with AIX label
2006-09-29 09:18:09 -07:00
proc
[PATCH] Kcore elf note namesz field fix
2006-09-29 09:18:25 -07:00
qnx4
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
ramfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
reiserfs
[PATCH] reiserfs: ifdef ACL stuff from inode
2006-09-29 09:18:11 -07:00
romfs
[PATCH] Really ignore kmem_cache_destroy return value
2006-09-27 08:26:10 -07:00
smbfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
sysfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
sysv
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
udf
[PATCH] mount udf UDF_PART_FLAG_READ_ONLY partitions with MS_RDONLY
2006-09-29 09:18:09 -07:00
ufs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
vfat
[PATCH] VFS: Permit filesystem to override root dentry on mount
2006-06-23 07:42:45 -07:00
xfs
[XFS] Remove v1 dir trace macro - missed in a past commit.
2006-09-29 15:23:02 +10:00
aio.c
spelling fixes
2006-06-26 18:35:02 +02:00
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] Require mmap handler for a.out executables
2006-09-29 09:18:08 -07:00
binfmt_elf_fdpic.c
[PATCH] elf_fdpic_core_dump: don't take tasklist_lock
2006-09-29 09:18:14 -07:00
binfmt_elf.c
[PATCH] elf_core_dump: don't take tasklist_lock
2006-09-29 09:18:14 -07:00
binfmt_em86.c
…
binfmt_flat.c
Remove obsolete #include <linux/config.h>
2006-06-30 19:25:36 +02:00
binfmt_misc.c
[PATCH] Fix unserialized task->files changing
2006-09-29 09:18:12 -07:00
binfmt_script.c
…
binfmt_som.c
Remove obsolete #include <linux/config.h>
2006-06-30 19:25:36 +02:00
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] block_dev.c mutex_lock_nested() fix
2006-09-29 09:18:19 -07:00
buffer.c
[PATCH] mm: tracking shared dirty pages
2006-09-26 08:48:44 -07:00
char_dev.c
[PATCH] cdev documentation
2006-09-29 09:18:16 -07:00
compat_ioctl.c
Remove obsolete #include <linux/config.h>
2006-06-30 19:25:36 +02:00
compat.c
[PATCH] Check return value of copy_to_user in compat_sys_pselect7
2006-09-26 10:52:39 +02:00
dcache.c
NFS: Add dentry materialisation op
2006-09-22 23:24:30 -04:00
dcookies.c
Remove obsolete #include <linux/config.h>
2006-06-30 19:25:36 +02:00
direct-io.c
[PATCH] lockdep: annotate direct io
2006-07-03 15:27:06 -07:00
dnotify.c
[PATCH] Use __read_mostly on some hot fs variables
2006-03-26 08:56:56 -08:00
dquot.c
[PATCH] dquot: add proper locking when using current->signal->tty
2006-09-29 09:18:14 -07:00
drop_caches.c
[PATCH] drop-pagecache
2006-01-08 20:12:40 -08:00
eventpoll.c
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
exec.c
[PATCH] Fix unserialized task->files changing
2006-09-29 09:18:12 -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] inode-diet: Move i_cdev into a union
2006-09-27 08:26:17 -07:00
file.c
[PATCH] expand_fdtable(): remove pointless unlock+lock
2006-09-29 09:18:25 -07:00
filesystems.c
[PATCH] Ban register_filesystem(NULL);
2006-09-29 09:18:20 -07:00
fs-writeback.c
[PATCH] zoned vm counters: conversion of nr_unstable to per zone counter
2006-06-30 11:25:36 -07:00
generic_acl.c
[PATCH] Generic infrastructure for acls
2006-09-29 09:18:24 -07:00
inode.c
[PATCH] fs.h: ifdef security fields
2006-09-29 09:18:11 -07:00
inotify_user.c
[PATCH] inotify: fix deadlock found by lockdep
2006-07-31 13:28:41 -07:00
inotify.c
[PATCH] inotify (4/5): allow watch removal from event handler
2006-06-20 05:25:19 -04:00
ioctl.c
Remove obsolete #include <linux/config.h>
2006-06-30 19:25:36 +02:00
ioprio.c
[PATCH] cfq-iosched: kill cfq_exit_lock
2006-09-30 20:29:36 +02:00
Kconfig
[PATCH] Access Control Lists for tmpfs
2006-09-29 09:18:24 -07:00
Kconfig.binfmt
[PATCH] frv: suppress configuration of certain features for FRV
2006-01-08 20:13:36 -08:00
libfs.c
[PATCH] libfs: remove page up-to-date check from simple_readpage
2006-09-29 09:18:06 -07:00
locks.c
[PATCH] fcntl(F_SETSIG) fix
2006-08-14 13:10:59 -07:00
Makefile
[PATCH] Generic infrastructure for acls
2006-09-29 09:18:24 -07:00
mbcache.c
[PATCH] mbcache: add lock annotation for __mb_cache_entry_release_unlock()
2006-09-29 09:18:07 -07:00
mpage.c
[PATCH] writeback: fix range handling
2006-06-23 07:42:49 -07:00
namei.c
[PATCH] fs/namei.c: replace multiple current->fs by shortcut variable
2006-09-29 09:18:22 -07:00
namespace.c
[PATCH] fs/namespace: handle init/registration errors
2006-09-29 09:18:05 -07:00
nfsctl.c
Remove obsolete #include <linux/config.h>
2006-06-30 19:25:36 +02:00
open.c
[PATCH] fix wrong error code on interrupted close syscalls
2006-09-29 09:18:13 -07:00
pipe.c
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
pnode.c
[PATCH] core: use list_move()
2006-06-26 09:58:17 -07:00
pnode.h
…
posix_acl.c
…
quota_v1.c
…
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] fs/read_write.c: EXPORT_UNUSED_SYMBOL
2006-07-10 13:24:18 -07:00
readdir.c
[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
2006-01-09 15:59:24 -08:00
select.c
[PATCH] enforce RLIMIT_NOFILE in poll()
2006-09-29 09:18:23 -07:00
seq_file.c
[PATCH] sem2mutex: fs/seq_file.c
2006-03-23 07:38:12 -08:00
splice.c
[PATCH] splice: fix problems with sys_tee()
2006-07-10 11:00:01 +02:00
stat.c
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
super.c
[PATCH] fs: add lock annotation to grab_super
2006-09-29 09:18:08 -07:00
sync.c
[PATCH] writeback: fix range handling
2006-06-23 07:42:49 -07:00
xattr_acl.c
…
xattr.c
[PATCH] log more info for directory entry change events
2006-06-20 05:25:28 -04:00