Commit e8a5426f authored Dec 17, 2015 by Vinayak Menon

mm: memory: reduce fault_around_bytes



mapping multiple pages on a fault result in page_check_references
hitting more number of referenced inactive pages and this results
in increased pressure on reclaim. Reduce it to the lowest possible
value. Reduced kswapd wakeups are observed with this change.

Change-Id: I03c6cac9f28fa328abab7b40f5f01144084a147c
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>

parent 968b9fc2

mm/memory.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2766,7 +2766,7 @@ void do_set_pte(struct vm_area_struct *vma, unsigned long address,
		}

		static unsigned long fault_around_bytes __read_mostly =
		rounddown_pow_of_two(65536);
		rounddown_pow_of_two(4096);

		#ifdef CONFIG_DEBUG_FS
		static int fault_around_bytes_get(void data, u64 val)