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Oleg Nesterov 252e5725cf do_sys_poll: simplify playing with on-stack data 
Cleanup. Lessens both the source and compiled code (100 bytes) and imho makes
the code much more understandable.

With this patch "struct poll_list *head" always points to on-stack stack_pps,
so we can remove all "is it on-stack" and "was it initialized" checks.

Also, move poll_initwait/poll_freewait and -EINTR detection closer to the
do_poll()'s callsite.

[akpm@linux-foundation.org: fix warning (size_t != uint)]
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Looks-good-to: Andi Kleen <ak@suse.de>
Cc: Davide Libenzi <davidel@xmailserver.org>
Cc: Vadim Lobanov <vlobanov@speakeasy.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17 08:42:48 -07:00
..
9p
9PFS: clean up explicit check for mandatory locks
2007-10-09 18:32:46 -04:00
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
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
autofs
Replace pid_t in autofs with struct pid reference
2007-05-11 08:29:36 -07:00
autofs4
autofs4: deadlock during create
2007-08-22 19:52:46 -07:00
befs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
bfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
cifs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
coda
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
configfs
mm: bdi init hooks
2007-10-17 08:42:45 -07:00
cramfs
mm: make read_cache_page synchronous
2007-05-07 12:12:51 -07:00
debugfs
docbook: fix filesystems content
2007-10-15 17:56:36 -07:00
devpts
devpts: add fsnotify create event
2007-05-08 11:14:59 -07:00
dlm
Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6
2007-10-12 15:49:37 -07:00
ecryptfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
efs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
exportfs
knfsd: exportfs: split out reconnecting a dentry from find_exported_dentry
2007-07-17 10:23:06 -07:00
ext2
fs: mark nibblemap const
2007-10-17 08:42:47 -07:00
ext3
fs: mark nibblemap const
2007-10-17 08:42:47 -07:00
ext4
fs: mark nibblemap const
2007-10-17 08:42:47 -07:00
fat
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
freevxfs
mm: Remove slab destructors from kmem_cache_create().
2007-07-20 10:11:58 +09:00
fuse
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
gfs2
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
hfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
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
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
isofs
zisofs use mutex instead of semaphore
2007-10-17 08:42:47 -07:00
jbd
Group short-lived and reclaimable kernel allocations
2007-10-16 09:43:00 -07:00
jbd2
mm: Remove slab destructors from kmem_cache_create().
2007-07-20 10:11:58 +09:00
jffs2
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
jfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
lockd
NFS/SUNRPC: use transport protocol naming
2007-10-09 17:17:53 -04:00
minix
fs: mark nibblemap const
2007-10-17 08:42:47 -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
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
nfs_common
…
nfsd
fs/nfsd/export.c: make 3 functions static
2007-10-16 09:43:10 -07:00
nls
NLS: Remove obsolete Makefile entries
2007-07-16 09:05:52 -07:00
ntfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
ocfs2
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
openpromfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
partitions
fs/partitions/sun.c endianness annotations
2007-10-14 12:41:51 -07:00
proc
SLAB_PANIC more (proc, posix-timers, shmem)
2007-10-17 08:42:47 -07:00
qnx4
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
ramfs
mm: bdi init hooks
2007-10-17 08:42:45 -07:00
reiserfs
fs/reiserfs/: cleanups
2007-10-17 08:42:46 -07:00
romfs
fs/romfs/inode.c: trivial improvements
2007-10-17 08:42:47 -07:00
smbfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
sysfs
mm: bdi init hooks
2007-10-17 08:42:45 -07:00
sysv
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
udf
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
ufs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
vfat
[PATCH] mark struct inode_operations const 3
2007-02-12 09:48:46 -08:00
xfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
aio.c
AIO: fix cleanup in io_submit_one(...)
2007-10-08 12:58:14 -07:00
anon_inodes.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm
2007-07-17 11:50:26 -07:00
attr.c
Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check
2007-07-17 12:00:03 -07:00
bad_inode.c
sendfile: remove bad_sendfile() from bad_file_ops
2007-07-10 08:04:15 +02:00
binfmt_aout.c
[PATCH] VFS: change struct file to use struct path
2006-12-08 08:28:41 -08:00
binfmt_elf_fdpic.c
x86: replace NT_PRXFPREG with ELF_CORE_XFPREG_TYPE #define
2007-10-17 08:42:44 -07:00
binfmt_elf.c
x86: replace NT_PRXFPREG with ELF_CORE_XFPREG_TYPE #define
2007-10-17 08:42:44 -07:00
binfmt_em86.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
binfmt_flat.c
binfmt_flat: checkpatch fixing minimum support for the blackfin relocations
2007-10-03 23:43:57 +08:00
binfmt_misc.c
mm: variable length argument support
2007-07-19 10:04:45 -07:00
binfmt_script.c
mm: variable length argument support
2007-07-19 10:04:45 -07:00
binfmt_som.c
…
bio.c
bio: make freeing of ->bi_io_vec conditional in bio_free()
2007-10-16 11:03:52 +02:00
block_dev.c
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
buffer.c
mm: count reclaimable pages per BDI
2007-10-17 08:42:45 -07:00
char_dev.c
mm: bdi init hooks
2007-10-17 08:42:45 -07:00
compat_ioctl.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
2007-10-11 19:40:14 -07:00
compat.c
mm: variable length argument support
2007-07-19 10:04:45 -07:00
dcache.c
Group short-lived and reclaimable kernel allocations
2007-10-16 09:43:00 -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
mm: Remove slab destructors from kmem_cache_create().
2007-07-20 10:11:58 +09:00
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
mm: Remove slab destructors from kmem_cache_create().
2007-07-20 10:11:58 +09:00
exec.c
Make unregister_binfmt() return void
2007-10-17 08:42:46 -07:00
fcntl.c
mm: Remove slab destructors from kmem_cache_create().
2007-07-20 10:11:58 +09:00
fifo.c
Detach sched.h from mm.h
2007-05-21 09:18:19 -07:00
file_table.c
lib: percpu_counter_sum_positive
2007-10-17 08:42:44 -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
Fix warnings with !CONFIG_BLOCK
2007-10-10 09:25:57 +02:00
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
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
inotify_user.c
mm: Remove slab destructors from kmem_cache_create().
2007-07-20 10:11:58 +09:00
inotify.c
Introduce a handy list_first_entry macro
2007-05-08 11:15:11 -07:00
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
[PATCH] pid: replace do/while_each_task_pid with do/while_each_pid_task
2007-02-12 09:48:32 -08:00
Kconfig
Merge git://git.linux-nfs.org/pub/linux/nfs-2.6
2007-10-15 10:47:35 -07:00
Kconfig.binfmt
fs: Kill sh dependency for binfmt_flat.
2007-05-21 14:34:00 +09:00
libfs.c
fs: introduce write_begin, write_end, and perform_write aops
2007-10-16 09:42:55 -07:00
locks.c
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
Makefile
signal/timer/event: eventfd core
2007-05-11 08:29:36 -07:00
mbcache.c
mm: Remove slab destructors from kmem_cache_create().
2007-07-20 10:11:58 +09:00
mpage.c
mm: buffered write cleanup
2007-10-16 09:42:54 -07:00
namei.c
partially fix up the lookup_one_noperm mess
2007-10-17 08:42:44 -07:00
namespace.c
mm: Remove slab destructors from kmem_cache_create().
2007-07-20 10:11:58 +09:00
nfsctl.c
nfsctl: use vfs_path_lookup
2007-07-19 10:04:45 -07:00
no-block.c
…
open.c
SELinux: Improve read/write performance
2007-10-17 08:59:31 +10:00
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] rename struct namespace to struct mnt_namespace
2006-12-08 08:28:51 -08:00
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
Cleanup macros for distinguishing mandatory locks
2007-10-09 18:32:46 -04:00
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
do_sys_poll: simplify playing with on-stack data
2007-10-17 08:42:48 -07:00
seq_file.c
[FS] seq_file: Introduce the seq_open_private()
2007-10-10 16:55:33 -07:00
signalfd.c
signalfd simplification
2007-09-20 13:19:59 -07:00
splice.c
Merge branch 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block
2007-10-16 10:09:16 -07:00
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
hugetlbfs: handle empty options string
2007-07-16 09:05:46 -07:00
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
Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check
2007-07-17 12:00:03 -07:00
xattr_acl.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
xattr.c
Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check
2007-07-17 12:00:03 -07:00