Commit 76c3218c authored Mar 20, 2019 by Vijayanand Jitta

mm : retry for reclaim if lmk kill is possible



should_reclaim_retry could result in premature oom if there
are large number of unaccounted(eg: kgsl and ion pages), and
no reclaimable pages, held by positive adj tasks which will be
freed upon lmk kill. so, retry for reclaim when lmk kill is
possible to avoid premature oom.

Change-Id: I7f6be53e3b1ffdf282c74d68a103134c1da9b7cc
Signed-off-by: Vijayanand Jitta <vjitta@codeaurora.org>

parent 5395b739

mm/page_alloc.c

+6 −2

Original line number	Diff line number	Diff line
		@@ -3871,9 +3871,13 @@ should_reclaim_retry(gfp_t gfp_mask, unsigned order,
		* always increment the no progress counter for them
		*/
		if ((did_some_progress \|\| lmk_kill_possible()) &&
		order <= PAGE_ALLOC_COSTLY_ORDER)
		order <= PAGE_ALLOC_COSTLY_ORDER) {

		*no_progress_loops = 0;
		else

		if (lmk_kill_possible())
		return true;
		} else
		(*no_progress_loops)++;

		/*