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Thu, 31 Jul 2025 17:27:54 -0700 (PDT) Received: from localhost ([2a03:2880:ff:70::]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-76bccfcf5f7sm2660467b3a.88.2025.07.31.17.27.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 31 Jul 2025 17:27:53 -0700 (PDT) From: Joanne Koong To: linux-mm@kvack.org, brauner@kernel.org Cc: willy@infradead.org, jack@suse.cz, hch@infradead.org, djwong@kernel.org, linux-fsdevel@vger.kernel.org, kernel-team@meta.com Subject: [RFC PATCH v1 09/10] mm: add clear_dirty_for_io_stats() helper Date: Thu, 31 Jul 2025 17:21:30 -0700 Message-ID: <20250801002131.255068-10-joannelkoong@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20250801002131.255068-1-joannelkoong@gmail.com> References: <20250801002131.255068-1-joannelkoong@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 5FC4540013 X-Rspam-User: X-Rspamd-Server: rspam09 X-Stat-Signature: zxqak8n8mu856adacoq5uyxipz75w37d X-HE-Tag: 1754008075-530978 X-HE-Meta: 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 41qg3yAQ 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 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: Add clear_dirty_for_io_stats() which clears dirty stats corresponding to a folio. Signed-off-by: Joanne Koong --- include/linux/writeback.h | 1 + mm/page-writeback.c | 16 ++++++++++++++++ 2 files changed, 17 insertions(+) diff --git a/include/linux/writeback.h b/include/linux/writeback.h index 000795a47cb3..8ca0e106cef7 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -382,6 +382,7 @@ int write_cache_pages(struct address_space *mapping, void *data); int do_writepages(struct address_space *mapping, struct writeback_control *wbc); void writeback_set_ratelimit(void); +void clear_dirty_for_io_stats(struct folio *folio, long nr_pages); void tag_pages_for_writeback(struct address_space *mapping, pgoff_t start, pgoff_t end); diff --git a/mm/page-writeback.c b/mm/page-writeback.c index f5916711db2d..d49cea4854c1 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2711,6 +2711,22 @@ static void __clear_dirty_for_io_stats(struct folio *folio, wb_stat_mod(wb, WB_RECLAIMABLE, -nr_pages); } +void clear_dirty_for_io_stats(struct folio *folio, long nr_pages) +{ + struct address_space *mapping = folio_mapping(folio); + struct bdi_writeback *wb; + struct wb_lock_cookie cookie = {}; + struct inode *inode; + + if (!mapping || !mapping_can_writeback(mapping)) + return; + + inode = mapping->host; + wb = unlocked_inode_to_wb_begin(inode, &cookie); + __clear_dirty_for_io_stats(folio, wb, nr_pages); + unlocked_inode_to_wb_end(inode, &cookie); +} + /* * Helper function for deaccounting dirty page without writeback. * -- 2.47.3