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From: Roman Gushchin To: Frank van der Linden Cc: linux-mm@kvack.org, muchun.song@linux.dev, akpm@linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] mm/hugetlb: align cma on allocation order, not demotion order Message-ID: References: <20240430161437.2100295-1-fvdl@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240430161437.2100295-1-fvdl@google.com> X-Migadu-Flow: FLOW_OUT X-Stat-Signature: x4an38tpxf4q7b6bigoh7ytndx7pictn X-Rspam-User: X-Rspamd-Queue-Id: 3693816000C X-Rspamd-Server: rspam05 X-HE-Tag: 1714668340-788440 X-HE-Meta: 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 7dFz4Cbt vbXZJFJxXJwzrz0i0dm+RbYFiOQWGTnHGv6RWk9uKlJpJaN56eBt/8naZsZnw60and2GNTbRP6v30x0LCn4d2QXFSeI5rJTEAEWeC4zRdAPqB/K0= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Apr 30, 2024 at 04:14:37PM +0000, Frank van der Linden wrote: > Align the CMA area for hugetlb gigantic pages to their size, not the > size that they can be demoted to. Otherwise there might be misaligned > sections at the start and end of the CMA area that will never be used > for hugetlb page allocations. > > Signed-off-by: Frank van der Linden > Cc: Roman Gushchin > Fixes: a01f43901cfb ("hugetlb: be sure to free demoted CMA pages to CMA") Reviewed-by: Roman Gushchin Thanks!