tree fea5f0ac63b3b14641593e0c38634829719ff95c
parent ae424ae4b5bcd820ad6ee6f0b986c4e14ed4d6cf
author Oleg Nesterov <oleg@tv-sign.ru> 1165574169 -0800
committer Linus Torvalds <torvalds@woody.osdl.org> 1165595318 -0800

[PATCH] sys_unshare: remove a broken CLONE_SIGHAND code

sys_unshare(CLONE_SIGHAND) is broken, the code under 'if (new_sigh)' is
never executed but very wrong. Just remove it to avoid a confusion,
task_lock() has nothing to do with ->sighand changing.

Also, change the comment in unshare_sighand(). Yes, CLONE_THREAD implies
CLONE_SIGHAND, but still it looks confusing. Also, we don't need to check
current->sighand != NULL.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>