From: Oleg Nesterov Date: Wed, 30 Apr 2008 07:52:51 +0000 (-0700) Subject: signals: send_sig_info: don't take tasklist_lock X-Git-Tag: v2.6.26-rc1~291 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=08d2c30ce98d274137f12b0a9b9c74137455922c;p=pandora-kernel.git signals: send_sig_info: don't take tasklist_lock The comment in send_sig_info() is wrong, tasklist_lock can't help. The caller must ensure the task can't go away, otherwise ->sighand can be NULL even before we take the lock. p->sighand could be changed by exec(), but I can't imagine how it is possible to prevent exit(), but not exec(). Since the things seem to work, I assume all callers are correct. However, drm_vbl_send_signals() looks broken. block_all_signals() which is solely used by drm is definitely broken. Signed-off-by: Oleg Nesterov Cc: Roland McGrath Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Reading git-diff-tree failed