linux-kernel - Re: [PATCH 2/7] mm: introduce kvmalloc and kvmalloc

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Message-Id: <20150714142404.30f6a2255f5bd72c5b332279@linux-foundation.org>
Date:	Tue, 14 Jul 2015 14:24:04 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Mikulas Patocka <mpatocka@...hat.com>,
	Mike Snitzer <msnitzer@...hat.com>,
	"Alasdair G. Kergon" <agk@...hat.com>,
	Edward Thornber <thornber@...hat.com>,
	Vivek Goyal <vgoyal@...hat.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, dm-devel@...hat.com,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 2/7] mm: introduce kvmalloc and kvmalloc_node

On Tue, 14 Jul 2015 14:13:16 -0700 (PDT) David Rientjes <rientjes@...gle.com> wrote:

> There's a misunderstanding in regards to the comment: __GFP_NORETRY 
> doesn't turn direct reclaim or compaction off, it is still attempted and 
> with the same priority as any other allocation.  This only stops the page 
> allocator from calling the oom killer, which will free memory or panic the 
> system, and looping when memory is available.

include/linux/gfp.h says

 * __GFP_NORETRY: The VM implementation must not retry indefinitely.

Can you suggest something more accurate and complete which we can put there?
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