cpusets: fix obsolete comment (41f7f60d) · Commits · 戴 / test

mm migration is no longer done in cpuset_update_task_memory_state() so it can no longer take current->mm->mmap_sem, so fix the obsolete comment. [ This changed in commit ("cpuset: migrate all tasks in cpuset at once") when the mm migration was moved from cpuset_update_task_memory_state() to update_nodemask() ] Signed-off-by:

David Rientjes <rientjes@google.com> Cc: Paul Jackson <pj@sgi.com> Signed-off-by:

Linus Torvalds <torvalds@linux-foundation.org>

kernel/cpuset.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -322,8 +322,8 @@ static void guarantee_online_mems(const struct cpuset cs, nodemask_t pmask)
		* Call without callback_mutex or task_lock() held. May be
		* called with or without cgroup_mutex held. Thanks in part to
		* 'the_top_cpuset_hack', the task's cpuset pointer will never
		* be NULL. This routine also might acquire callback_mutex and
		* current->mm->mmap_sem during call.
		* be NULL. This routine also might acquire callback_mutex during
		* call.
		*
		* Reading current->cpuset->mems_generation doesn't need task_lock
		* to guard the current->cpuset derefence, because it is guarded

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