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authorOleg Nesterov <oleg@tv-sign.ru>2006-03-28 16:11:20 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-28 18:36:43 -0800
commit5876700cd399112ecfa70df36203c8c6660d84f8 (patch)
tree3060724c6682ee7452bcb7b3c99eded75cd59ea7 /kernel/kmod.c
parent35f5cad8c4bab94ecc5acdc4055df5ea12dc76f8 (diff)
[PATCH] do __unhash_process() under ->siglock
This patch moves __unhash_process() call from realease_task() to __exit_signal(), so __detach_pid() is called with ->siglock held. This means we don't need tasklist_lock to iterate over thread group anymore: copy_process() was already changed to do attach_pid() under ->siglock. Eric's "pidhash-kill-switch_exec_pids.patch" from -mm changed de_thread() so it doesn't touch PIDTYPE_TGID. NOTE: de_thread() still needs some attention. It still changes task->pid lockless. Taking ->sighand.siglock here allows to do more tasklist_lock removals. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/kmod.c')
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