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Eric W. Biederman c18258c6f0 [PATCH] pid: Implement transfer_pid and use it to simplify de_thread 
In de_thread we move pids from one process to another, a rather ugly case.
The function transfer_pid makes it clear what we are doing, and makes the
action atomic.  This is useful we ever want to atomically traverse the
process group and session lists, in a rcu safe manner.

Even if the atomic properties this change should be a win as transfer_pid
should be less code to execute than executing both attach_pid and
detach_pid, and this should make de_thread slightly smaller as only a
single function call needs to be emitted.  The only downside is that the
code might be slower to execute as the odds are against transfer_pid being
in cache.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-27 08:26:19 -07:00
..
9p
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -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] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
autofs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
autofs4
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -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] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -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] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
freevxfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
fuse
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -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] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
isofs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
jbd
[PATCH] ext3: Fix sparse warnings
2006-09-27 08:26:10 -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] fs: Removing useless casts
2006-09-27 08:26:10 -07:00
minix
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
msdos
[PATCH] VFS: Permit filesystem to override root dentry on mount
2006-06-23 07:42:45 -07:00
ncpfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
nfs
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -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] fs: Conversions from kmalloc+memset to k(z|c)alloc
2006-09-27 08:26:10 -07:00
proc
[PATCH] NOMMU: move the fallback arch_vma_name() to a sensible place
2006-09-27 08:26:15 -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: warn about the useless nolargeio option
2006-09-27 08:26:18 -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] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -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
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
aio.c
spelling fixes
2006-06-26 18:35:02 +02:00
attr.c
…
bad_inode.c
…
binfmt_aout.c
…
binfmt_elf_fdpic.c
[PATCH] FDPIC: Add coredump capability for the ELF-FDPIC binfmt
2006-07-10 13:24:22 -07:00
binfmt_elf.c
Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
2006-09-26 13:07:55 -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] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -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] lockdep: fix blkdev_open() warning
2006-08-27 11:01:29 -07:00
buffer.c
[PATCH] mm: tracking shared dirty pages
2006-09-26 08:48:44 -07:00
char_dev.c
[PATCH] NOMMU: Set BDI capabilities for /dev/mem and /dev/kmem
2006-09-27 08:26:14 -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
…
dquot.c
[PATCH] use list_add_tail() instead of list_add()
2006-06-26 09:58:17 -07:00
drop_caches.c
…
eventpoll.c
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
exec.c
[PATCH] pid: Implement transfer_pid and use it to simplify de_thread
2006-09-27 08:26:19 -07:00
fcntl.c
…
fifo.c
…
file_table.c
[PATCH] inode-diet: Move i_cdev into a union
2006-09-27 08:26:17 -07:00
file.c
[PATCH] alloc_fdtable() cleanup
2006-09-27 08:26:19 -07:00
filesystems.c
…
fs-writeback.c
[PATCH] zoned vm counters: conversion of nr_unstable to per zone counter
2006-06-30 11:25:36 -07:00
inode.c
[PATCH] inode-diet: Move i_cdev into a union
2006-09-27 08:26:17 -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] uninline ioprio_best()
2006-08-21 10:02:50 +02:00
Kconfig
[PATCH] sysctl: Allow /proc/sys without sys_sysctl
2006-09-27 08:26:19 -07:00
Kconfig.binfmt
…
libfs.c
[PATCH] inode-diet: Eliminate i_blksize from the inode structure
2006-09-27 08:26:18 -07:00
locks.c
[PATCH] fcntl(F_SETSIG) fix
2006-08-14 13:10:59 -07:00
Makefile
[PATCH] devfs: Remove devfs from the kernel tree
2006-06-26 12:25:05 -07:00
mbcache.c
…
mpage.c
[PATCH] writeback: fix range handling
2006-06-23 07:42:49 -07:00
namei.c
[PATCH] autofs4 needs to force fail return revalidate
2006-09-27 08:26:17 -07:00
namespace.c
sysfs: add proper sysfs_init() prototype
2006-09-25 21:08:39 -07:00
nfsctl.c
Remove obsolete #include <linux/config.h>
2006-06-30 19:25:36 +02:00
open.c
[PATCH] ftruncate does not always update m/ctime
2006-06-25 10:01:15 -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
…
quota.c
…
read_write.c
[PATCH] fs/read_write.c: EXPORT_UNUSED_SYMBOL
2006-07-10 13:24:18 -07:00
readdir.c
…
select.c
[PATCH] fs: sys_poll with timeout -1 bug fix
2006-06-25 10:01:22 -07:00
seq_file.c
…
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] add missing desctiption in super.c
2006-09-06 11:00:01 -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