From b182801ab35f7a0afb3cdf8ba5df464d04206b46 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Wed, 27 Apr 2011 21:56:14 +0200 Subject: [PATCH] signal: do_sigtimedwait() needs retarget_shared_pending() do_sigtimedwait() changes current->blocked and thus it needs set_current_blocked()->retarget_shared_pending(). We could use set_current_blocked() directly. It is fine to change ->real_blocked from all-zeroes to ->blocked and vice versa lockless, but this is not immediately clear, looks racy, and needs a huge comment to explain why this is correct. To keep the things simple this patch adds the new static helper, __set_task_blocked() which should be called with ->siglock held. This way we can change both ->real_blocked and ->blocked atomically under ->siglock as the current code does. This is more understandable. Signed-off-by: Oleg Nesterov Acked-by: Tejun Heo Reviewed-by: Matt Fleming --- Reading git-format-patch failed