[PATCH -mm] mm, compaction: properly signal and act upon lock and need_sched() contention - fix
From: rientjes@google.com (David Rientjes)
Date: 2014-06-02 20:09:14
Also in:
linux-mm, lkml
On Mon, 2 Jun 2014, Vlastimil Babka wrote:
compact_should_abort() returns true instead of false and vice versa due to changes between v1 and v2 of the patch. This makes both async and sync compaction abort with high probability, and has been reported to cause e.g. soft lockups on some ARM boards, or drivers calling dma_alloc_coherent() fail to probe with CMA enabled on different boards. This patch fixes the return value to match comments and callers expecations. Reported-and-tested-by: Kevin Hilman <redacted> Reported-and-tested-by: Shawn Guo <redacted> Tested-by: Stephen Warren <redacted> Signed-off-by: Vlastimil Babka <redacted>
Acked-by: David Rientjes <rientjes@google.com>