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Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pYbnp-0047Nz-7v; Sun, 05 Mar 2023 00:00:37 +0000 Date: Sun, 5 Mar 2023 00:00:37 +0000 From: Matthew Wilcox To: SeongJae Park Cc: Andrew Morton , Kefeng Wang , "Vishal Moola (Oracle)" , damon@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH 2/2] mm/damon/paddr: fix folio_nr_pages() after folio_put() in damon_pa_mark_accessed_or_deactivate() Message-ID: References: <20230304193949.296391-1-sj@kernel.org> <20230304193949.296391-3-sj@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230304193949.296391-3-sj@kernel.org> X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: C05074001E X-Rspam-User: X-Stat-Signature: 1ch3mj6amu99mcg1o6zh51kkysusst5d X-HE-Tag: 1677974449-53104 X-HE-Meta: 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 2rYPp1K7 xJ33myhY0CaOWKa4Mob7uk1qHzb2tU2JWoN9frB+CfjXlFzDMKXOqLuddd7aGj/wA/jU8KBPYfAxPNVnQ3nYrFSGJGGxmVvHjG8bO7TDqT8tG6vul89XqPTlBsXYUTDS2gymvtdYhcWQM7wfNTjSzm7df/ZKgMqFfC60lR3Hqw/QHtPLGkUCVHOUMMBWUA0jng1F7Mj0tEP7dRmBap3ACq6bUPdvSjkf4hpYRhuDa1ivX13O1SBE/Vyi9soo1lPRVamfa58WuASdmBi/DW28KsO6r6+6Su0K7pg8pjLYPgvcS1cp86RI9yVd2sh2t72AKXPFpRrsqVPUfTSZMDlrvutHcKnED2yUiwGlEQkNNfUfUnChlBx2kRCqNDKu/tNVbwVMU9E0ItZziCUE= 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: On Sat, Mar 04, 2023 at 07:39:49PM +0000, SeongJae Park wrote: > damon_pa_mark_accessed_or_deactivate() is accessing a folio via > folio_nr_pages() after folio_put() for the folio has invoked. Fix it. > > Fixes: f70da5ee8fe1 ("mm/damon: convert damon_pa_mark_accessed_or_deactivate() to use folios") > Cc: # 6.3.x > Signed-off-by: SeongJae Park Reviewed-by: Matthew Wilcox (Oracle)