On Tue, May 10, 2016 at 09:35:53AM +0200, Vlastimil Babka wrote: > After __alloc_pages_slowpath() sets up new alloc_flags and wakes up kswapd, it > first tries get_page_from_freelist() with the new alloc_flags, as it may > succeed e.g. due to using min watermark instead of low watermark. This attempt > does not have to be retried on each loop, since direct reclaim, direct > compaction and oom call get_page_from_freelist() themselves. Hmm... there is a corner case. If did_some_progress is 0 or compaction is deferred, get_page_from_freelist() isn't called. But, we can succeed to allocate memory since there is a kswapd that reclaims memory in background. Thanks. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>