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Eric W. Biederman d73d65293e [PATCH] pidhash: kill switch_exec_pids 
switch_exec_pids is only called from de_thread by way of exec, and it is
only called when we are exec'ing from a non thread group leader.

Currently switch_exec_pids gives the leader the pid of the thread and
unhashes and rehashes all of the process groups.  The leader is already in
the EXIT_DEAD state so no one cares about it's pids.  The only concern for
the leader is that __unhash_process called from release_task will function
correctly.  If we don't touch the leader at all we know that
__unhash_process will work fine so there is no need to touch the leader.

For the task becomming the thread group leader, we just need to give it the
pid of the old thread group leader, add it to the task list, and attach it
to the session and the process group of the thread group.

Currently de_thread is also adding the task to the task list which is just
silly.

Currently the only leader of __detach_pid besides detach_pid is
switch_exec_pids because of the ugly extra work that was being
performed.

So this patch removes switch_exec_pids because it is doing too much, it is
creating an unnecessary special case in pid.c, duing work duplicated in
de_thread, and generally obscuring what it is going on.

The necessary work is added to de_thread, and it seems to be a little
clearer there what is going on.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Kirill Korotaev <dev@sw.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-28 18:36:40 -08:00
..
9p [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
adfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
affs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
afs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
autofs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
autofs4 [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
befs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
bfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
cifs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
coda [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
configfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
cramfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
debugfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
devfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
devpts [PATCH] devpts: use lib/parser.c for parsing mount options 2006-03-23 07:38:17 -08:00
efs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
exportfs [PATCH] exportfs: add find_acceptable_alias helper 2006-01-18 19:20:28 -08:00
ext2 [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
ext3 [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
fat [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
freevxfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
fuse [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
hfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
hfsplus [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
hostfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
hpfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
hppfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
hugetlbfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
isofs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
jbd [PATCH] Make address_space_operations->invalidatepage return void 2006-03-26 08:56:55 -08:00
jffs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
jffs2 [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
jfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
lockd [PATCH] sem2mutex: fs/ 2006-03-26 08:56:55 -08:00
minix [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
msdos [PATCH] fat: remove the unneeded vfat_find() in vfat_rename() 2005-10-30 17:37:32 -08:00
ncpfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
nfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
nfs_common [PATCH] nfsacl: Solaris VxFS compatibility fix 2005-10-11 09:46:54 -07:00
nfsd [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
nls [PATCH] fs: Use ARRAY_SIZE macro 2006-03-24 07:33:19 -08:00
ntfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
ocfs2 [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
openpromfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
partitions [PATCH] dm-md-dependency-tree-in-sysfs-holders-slaves-subdirectory-tidy 2006-03-27 08:44:59 -08:00
proc [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
qnx4 [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
ramfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
reiserfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
romfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
smbfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
sysfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
sysv [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
udf [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
ufs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
vfat [PATCH] fat: remove the unneeded vfat_find() in vfat_rename() 2005-10-30 17:37:32 -08:00
xfs [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
aio.c [PATCH] use kzalloc and kcalloc in core fs code 2006-03-25 08:23:00 -08:00
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.c [PATCH] x86_64: Increase the variability of the process stack on 64bit architectures 2006-03-25 09:10:52 -08:00
binfmt_elf_fdpic.c BUG_ON() Conversion in fs/binfmt_elf_fdpic.c 2006-03-24 18:38:48 +01:00
binfmt_em86.c
binfmt_flat.c [PATCH] flat binary loader doesn't check fd table full 2006-03-25 08:23:01 -08:00
binfmt_misc.c [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
binfmt_script.c
binfmt_som.c [PATCH] mm: mm_init set_mm_counters 2005-10-29 21:40:38 -07:00
bio.c [PATCH] mempool: use mempool_create_slab_pool() 2006-03-26 08:57:00 -08:00
block_dev.c [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
buffer.c [PATCH] for_each_online_pgdat: renaming for_each_pgdat 2006-03-27 08:44:48 -08:00
char_dev.c [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
compat.c [PATCH] Fold select_bits_alloc/free into caller code. 2006-03-28 09:16:04 -08:00
compat_ioctl.c [PATCH] fs: Use ARRAY_SIZE macro 2006-03-24 07:33:19 -08:00
dcache.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2006-03-26 09:41:18 -08:00
dcookies.c [PATCH] Use __read_mostly on some hot fs variables 2006-03-26 08:56:56 -08:00
direct-io.c [PATCH] remove ->get_blocks() support 2006-03-26 08:57:01 -08:00
dnotify.c [PATCH] Use __read_mostly on some hot fs variables 2006-03-26 08:56:56 -08:00
dquot.c [PATCH] cpuset memory spread: slab cache format 2006-03-24 07:33:23 -08:00
drop_caches.c [PATCH] drop-pagecache 2006-01-08 20:12:40 -08:00
eventpoll.c [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
exec.c [PATCH] pidhash: kill switch_exec_pids 2006-03-28 18:36:40 -08:00
fcntl.c [PATCH] Use __read_mostly on some hot fs variables 2006-03-26 08:56:56 -08:00
fifo.c [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
file.c [PATCH] for_each_possible_cpu: fixes for generic part 2006-03-28 09:16:05 -08:00
file_table.c [PATCH] get_empty_filp tweaks, inline epoll_init_file() 2006-03-23 07:38:17 -08:00
filesystems.c [PATCH] fix missing includes 2005-10-30 17:37:32 -08:00
fs-writeback.c [PATCH] Move cond_resched() after iput() in sync_sb_inodes() 2006-03-25 08:22:56 -08:00
inode.c [PATCH] mark f_ops const in the inode 2006-03-28 09:16:05 -08:00
inotify.c [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
ioctl.c [PATCH] capable/capability.h (fs/) 2006-01-11 18:42:13 -08:00
ioprio.c [PATCH] capable/capability.h (fs/) 2006-01-11 18:42:13 -08:00
Kconfig Merge branch 'linus' 2006-03-23 23:44:19 -05:00
Kconfig.binfmt [PATCH] frv: suppress configuration of certain features for FRV 2006-01-08 20:13:36 -08:00
libfs.c [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
locks.c [PATCH] VFS,fs/locks.c,NFSD4: add race_free posix_lock_file_conf() interface 2006-03-26 08:56:56 -08:00
Makefile [PATCH] relay: migrate from relayfs to a generic relay API 2006-03-23 19:56:55 +01:00
mbcache.c [PATCH] Typo fixes 2006-03-28 09:16:08 -08:00
mpage.c [PATCH] map multiple blocks for mpage_readpages() 2006-03-26 08:57:01 -08:00
namei.c [PATCH] autofs4: nameidata needs to be up to date for follow_link 2006-03-27 08:44:40 -08:00
namespace.c [PATCH] autofs4: change may_umount* functions to boolean 2006-03-27 08:44:40 -08:00
nfsctl.c [PATCH] fs: Use ARRAY_SIZE macro 2006-03-24 07:33:19 -08:00
open.c Merge branch 'audit.b3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current 2006-03-25 09:24:53 -08:00
pipe.c [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
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.c [PATCH] sem2mutex: quota 2006-03-23 07:38:11 -08:00
quota_v1.c
quota_v2.c [PATCH] sem2mutex: quota 2006-03-23 07:38:11 -08:00
read_write.c [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
readdir.c [PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem 2006-01-09 15:59:24 -08:00
select.c [PATCH] mark f_ops const in the inode 2006-03-28 09:16:05 -08:00
seq_file.c [PATCH] sem2mutex: fs/seq_file.c 2006-03-23 07:38:12 -08:00
stat.c [PATCH] fstatat64 support 2006-02-11 21:41:10 -08:00
super.c [PATCH] sem2mutex: fs/ 2006-03-26 08:56:55 -08:00
xattr.c [PATCH] Collect more inode information during syscall processing. 2006-03-20 14:08:53 -05:00
xattr_acl.c