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Mon, 27 May 2024 14:15:09 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, David Hildenbrand , Andrew Morton , "Matthew Wilcox (Oracle)" , Mike Rapoport , Minchan Kim , Sergey Senozhatsky , Hyeonggon Yoo <42.hyeyoo@gmail.com> Subject: [PATCH v1 5/6] mm/filemap: reinitialize folio->_mapcount directly Date: Mon, 27 May 2024 16:14:53 +0200 Message-ID: <20240527141454.113132-6-david@redhat.com> In-Reply-To: <20240527141454.113132-1-david@redhat.com> References: <20240527141454.113132-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.7 X-Stat-Signature: i1sjohj3kx7b9fyaj1pwt7343ksegfox X-Rspamd-Queue-Id: 117561C001A X-Rspam-User: X-Rspamd-Server: rspam01 X-HE-Tag: 1716819316-836309 X-HE-Meta: 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 xjUDNHbs Pq3BT75FOO/YFuQ5s5XesWKxueFnAh5Mis8v/WNuZUe7F9cZwpJsplqYC3yh8UCSr+tG/7C5RwcO6HDmwzpXTaOqWHZWKs36+cyNjTMmtZbIpo+j+PChxKBkRaDXZKy49RG1lFq+EqSf+tpu4Tkfm30B05knzaCMXm3QbohhK7Zj9WmJaShggWbEVXXMIaz6NWbJ/aJjb3fSfZz2sBiyzgV59F5gvPzNZZfOnRHfsMZoLFq6uZTyrO5NGK/Y9sAL/4Nm25UunbnXadq4EzJNpyCXnWEc0CDMpCugA 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: Let's get rid of the page_mapcount_reset() call and simply reinitialize folio->_mapcount directly. Signed-off-by: David Hildenbrand --- mm/filemap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/filemap.c b/mm/filemap.c index 382c3d06bfb1..c4ac7289e88a 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -177,7 +177,7 @@ static void filemap_unaccount_folio(struct address_space *mapping, * and we'd rather not leak it: if we're wrong, * another bad page check should catch it later. */ - page_mapcount_reset(&folio->page); + atomic_set(&folio->_mapcount, -1); folio_ref_sub(folio, mapcount); } }