Nick Piggin 95c354fe9f spinlock: lockbreak cleanup ...

The break_lock data structure and code for spinlocks is quite nasty.
Not only does it double the size of a spinlock but it changes locking to
a potentially less optimal trylock.

Put all of that under CONFIG_GENERIC_LOCKBREAK, and introduce a
__raw_spin_is_contended that uses the lock data itself to determine whether
there are waiters on the lock, to be used if CONFIG_GENERIC_LOCKBREAK is
not set.

Rename need_lockbreak to spin_needbreak, make it use spin_is_contended to
decouple it from the spinlock implementation, and make it typesafe (rwlocks
do not have any need_lockbreak sites -- why do they even get bloated up
with that break_lock then?).

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2008-01-30 13:31:20 +01:00

..

9p

9p: use copy of the options value instead of original

2007-11-06 08:02:53 -06:00

adfs

Slab API: remove useless ctor parameter and reorder parameters

2007-10-17 08:42:45 -07:00

affs

fs: mark nibblemap const

2007-10-17 08:42:47 -07:00

afs

vfs: Add 64 bit i_version support

2008-01-28 23:58:27 -05:00

autofs

Use task_pid_nr() instead of pid_nr(task_pid())

2007-10-19 11:53:43 -07:00

autofs4

pid namespaces: round up the API

2007-10-19 11:53:37 -07:00

befs

Slab API: remove useless ctor parameter and reorder parameters

2007-10-17 08:42:45 -07:00

bfs

regression: bfs endianness bug

2007-12-05 09:25:20 -08:00

cifs

[CIFS] DFS build fixes

2008-01-25 10:12:41 +00:00

coda

coda: convert struct class_device to struct device

2008-01-24 20:40:05 -08:00

configfs

configfs: file.c fix possible recursive locking

2008-01-25 15:05:47 -08:00

cramfs

fs/cramfs/inode.c: replace hardcoded value with preprocessor constant

2007-10-18 14:37:29 -07:00

debugfs

Kobject: convert fs/* from kobject_unregister() to kobject_put()

2008-01-24 20:40:40 -08:00

devpts

devpts: add fsnotify create event

2007-05-08 11:14:59 -07:00

dlm

Kobject: convert fs/* from kobject_unregister() to kobject_put()

2008-01-24 20:40:40 -08:00

ecryptfs

[NETNS]: Consolidate kernel netlink socket destruction.

2008-01-28 15:08:07 -08:00

efs

exportfs: make struct export_operations const

2007-10-22 08:13:21 -07:00

exportfs

exportfs: update documentation

2007-10-22 08:13:21 -07:00

ext2

ext2: Fix the max file size for ext2 file system.

2008-01-28 23:58:26 -05:00

ext3

ext3: Fix the max file size for ext3 file system.

2008-01-28 23:58:26 -05:00

ext4

ext4: Use the ext4_ext_actual_len() helper function

2008-01-28 23:58:27 -05:00

fat

fat: optimize fat_count_free_clusters()

2008-01-08 16:10:35 -08:00

freevxfs

mm: Remove slab destructors from kmem_cache_create().

2007-07-20 10:11:58 +09:00

fuse

Kobject: convert fs/* from kobject_unregister() to kobject_put()

2008-01-24 20:40:40 -08:00

gfs2

Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw

2008-01-25 08:39:18 -08:00

hfs

hfs: fix coverity-found null deref

2008-01-17 15:38:58 -08:00

hfsplus

Slab API: remove useless ctor parameter and reorder parameters

2007-10-17 08:42:45 -07:00

hostfs

uml: fix hostfs style

2007-10-16 09:43:07 -07:00

hpfs

Slab API: remove useless ctor parameter and reorder parameters

2007-10-17 08:42:45 -07:00

hppfs

[PATCH] Mark struct super_operations const

2007-02-12 09:48:47 -08:00

hugetlbfs

hugetlb: allow bulk updating in hugetlb_*_quota()

2007-11-14 18:45:40 -08:00

isofs

exportfs: make struct export_operations const

2007-10-22 08:13:21 -07:00

jbd

spinlock: lockbreak cleanup

2008-01-30 13:31:20 +01:00

jbd2

spinlock: lockbreak cleanup

2008-01-30 13:31:20 +01:00

jffs2

Freezer: Fix JFFS2 garbage collector freezing issue (rev. 2)

2007-12-04 01:35:41 -05:00

jfs

mount options: fix jfs

2008-01-24 16:13:21 -06:00

lockd

NLM: Fix a bogus 'return' in nlmclnt_rpc_release

2008-01-30 02:06:08 -05:00

minix

limit minixfs printks on corrupted dir i_size

2007-10-17 08:42:53 -07:00

msdos

[PATCH] mark struct inode_operations const 2

2007-02-12 09:48:46 -08:00

ncpfs

Slab API: remove useless ctor parameter and reorder parameters

2007-10-17 08:42:45 -07:00

nfs

NFSv4: Iterate through all nfs_clients when the server recalls a delegation

2008-01-30 02:06:12 -05:00

nfs_common

…

nfsd

knfsd: Allow NFSv2/3 WRITE calls to succeed when krb5i etc is used.

2008-01-13 09:57:57 -08:00

nls

sparse pointer use of zero as null

2007-10-18 14:37:31 -07:00

ntfs

NTFS: Fix read regression.

2007-11-03 12:27:21 -07:00

ocfs2

ocfs2: Fix userspace ABI breakage in sysfs

2008-01-28 19:10:23 -08:00

openpromfs

[SPARC]: Constify function pointer tables.

2008-01-22 18:29:20 -08:00

partitions

Kobject: convert fs/* from kobject_unregister() to kobject_put()

2008-01-24 20:40:40 -08:00

proc

[ATM]: Oops reading net/atm/arp

2008-01-28 15:01:36 -08:00

qnx4

Slab API: remove useless ctor parameter and reorder parameters

2007-10-17 08:42:45 -07:00

ramfs

Remove valueless definition of hard-selected RAMFS option

2007-10-17 08:42:56 -07:00

reiserfs

proc: fix proc_dir_entry refcounting

2007-12-05 09:21:20 -08:00

romfs

fs/romfs/inode.c: trivial improvements

2007-10-17 08:42:47 -07:00

smbfs

FS: Remove dead code

2008-01-28 23:14:37 +01:00

sysfs

Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

2008-01-25 17:19:08 -08:00

sysv

Slab API: remove useless ctor parameter and reorder parameters

2007-10-17 08:42:45 -07:00

udf

fs/udf/balloc.c: mark a variable as uninitialized_var()

2007-10-17 08:43:00 -07:00

ufs

ufs: fix nexstep dir block size

2007-12-05 09:21:18 -08:00

vfat

[PATCH] mark struct inode_operations const 3

2007-02-12 09:48:46 -08:00

xfs

[XFS] fix unaligned access in readdir

2008-01-11 18:05:04 +11:00

aio.c

core: remove last users of empty FASTCALL macro

2008-01-30 13:31:17 +01:00

anon_inodes.c

anon-inodes use open coded atomic_inc for the shared inode

2007-10-17 08:43:00 -07:00

attr.c

VFS: make notify_change pass ATTR_KILL_S*ID to setattr operations

2007-10-18 14:37:22 -07:00

bad_inode.c

sendfile: remove bad_sendfile() from bad_file_ops

2007-07-10 08:04:15 +02:00

binfmt_aout.c

mm: fix exit_mmap BUG() on a.out binary exit

2007-12-20 07:49:53 -08:00

binfmt_elf_fdpic.c

pid namespaces: changes to show virtual ids to user

2007-10-19 11:53:40 -07:00

binfmt_elf.c

x86: PIE executable randomization, checkpatch fixes

2008-01-30 13:31:07 +01:00

binfmt_em86.c

Convert files to UTF-8 and some cleanups

2007-10-19 23:21:04 +02:00

binfmt_flat.c

binfmt_flat: warning fixes

2007-10-17 08:42:54 -07:00

binfmt_misc.c

Convert files to UTF-8 and some cleanups

2007-10-19 23:21:04 +02:00

binfmt_script.c

Convert files to UTF-8 and some cleanups

2007-10-19 23:21:04 +02:00

binfmt_som.c

core_pattern: ignore RLIMIT_CORE if core_pattern is a pipe

2007-10-17 08:42:50 -07:00

bio.c

__bio_clone: don't calculate hw/phys segment counts

2008-01-28 10:04:46 +01:00

block_dev.c

Driver core: convert block from raw kobjects to core devices

2008-01-24 20:40:36 -08:00

buffer.c

Add buffer head related helper functions

2008-01-28 23:58:26 -05:00

char_dev.c

Kobject: rename kobject_init_ng() to kobject_init()

2008-01-24 20:40:38 -08:00

compat_ioctl.c

remove __attribute_used__

2008-01-28 23:21:18 +01:00

compat.c

security: call security_file_permission from rw_verify_area

2008-01-25 11:29:52 +11:00

dcache.c

dcache: don't expose uninitialized memory in /proc/<pid>/fd/<fd>

2007-10-22 08:13:18 -07:00

dcookies.c

Remove fs.h from mm.h

2007-07-29 17:09:29 -07:00

direct-io.c

remove ZERO_PAGE

2007-10-16 09:42:53 -07:00

dnotify.c

mm: Remove slab destructors from kmem_cache_create().

2007-07-20 10:11:58 +09:00

dquot.c

Don't send quota messages repeatedly when hardlimit reached

2007-12-23 12:54:36 -08:00

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

fs/eventpoll.c: use list_for_each_entry() instead of list_for_each()

2007-10-19 11:53:38 -07:00

exec.c

vfs: coredumping fix

2007-11-28 10:58:01 -08:00

fcntl.c

pid namespaces: changes to show virtual ids to user

2007-10-19 11:53:40 -07:00

fifo.c

Detach sched.h from mm.h

2007-05-21 09:18:19 -07:00

file_table.c

fs/file_table.c: use list_for_each_entry() instead of list_for_each()

2007-10-19 11:53:38 -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

Revert "writeback: introduce writeback_control.more_io to indicate more io"

2008-01-14 21:21:29 -08:00

generic_acl.c

Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check

2007-07-17 12:00:03 -07:00

inode.c

ext4: Add inode version support in ext4

2008-01-28 23:58:27 -05:00

inotify_user.c

change inotifyfs magic as the same magic is used for futexfs

2007-10-17 08:43:00 -07:00

inotify.c

[PATCH] new helper - inotify_evict_watch()

2007-10-21 02:37:38 -04:00

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

cfq-iosched: relax IOPRIO_CLASS_IDLE restrictions

2008-01-28 11:38:15 +01:00

Kconfig

ext4: Add the journal checksum feature

2008-01-28 23:58:27 -05:00

Kconfig.binfmt

fs: Kill sh dependency for binfmt_flat.

2007-05-21 14:34:00 +09:00

libfs.c

exportfs: add new methods

2007-10-22 08:13:19 -07:00

locks.c

locks: fix possible infinite loop in posix deadlock detection

2007-10-30 09:04:18 -07:00

Makefile

Remove valueless definition of hard-selected RAMFS option

2007-10-17 08:42:56 -07:00

mbcache.c

fs: Fix to correct the mbcache entries counter

2007-10-25 15:18:29 -07:00

mpage.c

mm: buffered write cleanup

2007-10-16 09:42:54 -07:00

namei.c

Use access mode instead of open flags to determine needed permissions

2008-01-12 14:47:58 -08:00

namespace.c

kobject: convert main fs kobject to use kobject_create

2008-01-24 20:40:13 -08:00

nfsctl.c

nfsctl: use vfs_path_lookup

2007-07-19 10:04:45 -07:00

no-block.c

…

open.c

mark sys_open/sys_read exports unused

2007-11-14 18:45:42 -08:00

pipe.c

sched: affine sync wakeups

2007-10-15 17:00:19 +02:00

pnode.c

Introduce a handy list_first_entry macro

2007-05-08 11:15:11 -07:00

pnode.h

[PATCH] new helpers - collect_mounts() and release_collected_mounts()

2007-10-21 02:37:25 -04:00

posix_acl.c

…

quota_v1.c

…

quota_v2.c

…

quota.c

[IA64] Fix build failure in fs/quota.c

2007-07-27 15:40:13 -07:00

read_write.c

ext4: export iov_shorten from kernel for ext4's use

2008-01-28 23:58:27 -05:00

read_write.h

…

readdir.c

ROUND_UP macro cleanup in fs/(select|compat|readdir).c

2007-05-08 11:15:09 -07:00

select.c

fs/select, remove unused macros

2007-10-19 11:53:41 -07:00

seq_file.c

[FS] seq_file: Introduce the seq_open_private()

2007-10-10 16:55:33 -07:00

signalfd.c

rename signalfd_siginfo fields

2007-10-17 08:43:01 -07:00

splice.c

splice: fix problem with atime not being updated

2008-01-29 21:55:20 +01:00

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

Convert files to UTF-8 and some cleanups

2007-10-19 23:21:04 +02:00

sync.c

Introduce fixed sys_sync_file_range2() syscall, implement on PowerPC and ARM

2007-06-28 11:38:30 -07:00

timerfd.c

make timerfd return a u64 and fix the __put_user

2007-07-26 11:35:17 -07:00

utimes.c

VFS: check nanoseconds in utimensat

2007-10-17 08:42:52 -07:00

xattr_acl.c

[PATCH] remove many unneeded #includes of sched.h

2007-02-14 08:09:54 -08:00

xattr.c

[PATCH] pass dentry to audit_inode()/audit_inode_child()

2007-10-21 02:37:18 -04:00