From: Christoph Hellwig <hch@infradead.org>
To: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Matthew Wilcox <willy@infradead.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Andrew Morton <akpm@linux-foundation.org>,
Michal Nazarewicz <mina86@mina86.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Vlastimil Babka <vbabka@suse.cz>
Subject: Re: [PATCH] mm: cma: honor __GFP_ZERO flag in cma_alloc()
Date: Wed, 13 Jun 2018 05:55:46 -0700 [thread overview]
Message-ID: <20180613125546.GB32016@infradead.org> (raw)
In-Reply-To: <20180613124001eucas1p2422f7916367ce19fecd40d6131990383~3uKFrT3ML1977219772eucas1p2G@eucas1p2.samsung.com>
On Wed, Jun 13, 2018 at 02:40:00PM +0200, Marek Szyprowski wrote:
> It is not only the matter of the spinlocks. GFP_ATOMIC is not supported
> by the
> memory compaction code, which is used in alloc_contig_range(). Right, this
> should be also noted in the documentation.
Documentation is good, asserts are better. The code should reject any
flag not explicitly supported, or even better have its own flags type
with the few actually supported flags.
next prev parent reply other threads:[~2018-06-13 12:55 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20180613085851eucas1p20337d050face8ff8ea87674e16a9ccd2@eucas1p2.samsung.com>
2018-06-13 8:58 ` [PATCH] mm: cma: honor __GFP_ZERO flag in cma_alloc() Marek Szyprowski
2018-06-13 12:24 ` Matthew Wilcox
2018-06-13 12:40 ` Marek Szyprowski
2018-06-13 12:55 ` Christoph Hellwig [this message]
2018-06-13 13:39 ` Michal Hocko
2018-07-02 13:23 ` Marek Szyprowski
2018-07-02 13:30 ` Christoph Hellwig
2018-07-09 10:32 ` Marek Szyprowski
2018-07-02 13:32 ` Michal Hocko
2018-07-09 10:31 ` Marek Szyprowski
2018-06-13 12:52 ` Christoph Hellwig
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