Commit 8b1f707d authored Aug 07, 2015 by Vinayak Menon Committed by Gerrit - the friendly Code Review server Dec 14, 2015

mm: zcache: do not wake up kswapd for zcache allocs



zcache allocations happen during reclaim of pages,
and waking up kswapd at this time hinders system
performance. During tests it was seen that without
this patch, there were a lot of kswapd wakeups and
was resulting in bad launches.

Change-Id: Ic0f0240b8fdad6b3fe142b2bdc0366cfd870635e
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>

parent d60b5330

mm/zcache.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -74,7 +74,8 @@ static u64 zcache_pool_shrink_pages;
		static atomic_t zcache_stored_pages = ATOMIC_INIT(0);

		#define GFP_ZCACHE \
		(__GFP_FS \| __GFP_NORETRY \| __GFP_NOWARN \| __GFP_NOMEMALLOC)
		(__GFP_FS \| __GFP_NORETRY \| __GFP_NOWARN \| \
		__GFP_NOMEMALLOC \| __GFP_NO_KSWAPD)
		/*
		* Zcache receives pages for compression through the Cleancache API and is able
		* to evict pages from its own compressed pool on an LRU basis in the case that