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Fri, 29 Aug 2025 16:39:53 -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, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, kernel-team@meta.com Subject: [PATCH v2 03/12] mm: add folio_end_writeback_pages() helper Date: Fri, 29 Aug 2025 16:39:33 -0700 Message-ID: <20250829233942.3607248-4-joannelkoong@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20250829233942.3607248-1-joannelkoong@gmail.com> References: <20250829233942.3607248-1-joannelkoong@gmail.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add folio_end_writeback_pages() which takes in the number of pages written back. Signed-off-by: Joanne Koong --- include/linux/pagemap.h | 1 + mm/filemap.c | 12 +++++++++--- 2 files changed, 10 insertions(+), 3 deletions(-) diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 12a12dae727d..362900730247 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -1221,6 +1221,7 @@ void folio_wait_writeback(struct folio *folio); int folio_wait_writeback_killable(struct folio *folio); void end_page_writeback(struct page *page); void folio_end_writeback(struct folio *folio); +void folio_end_writeback_pages(struct folio *folio, long nr_pages); void folio_wait_stable(struct folio *folio); void __folio_mark_dirty(struct folio *folio, struct address_space *, int warn); void folio_account_cleaned(struct folio *folio, struct bdi_writeback *wb); diff --git a/mm/filemap.c b/mm/filemap.c index cbfb0f085eb6..6d50afaff930 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1627,14 +1627,15 @@ static void filemap_end_dropbehind_write(struct folio *folio) } /** - * folio_end_writeback - End writeback against a folio. + * folio_end_writeback_pages - End writeback against a folio. * @folio: The folio. + * @nr_pages: The number of pages written back. * * The folio must actually be under writeback. * * Context: May be called from process or interrupt context. */ -void folio_end_writeback(struct folio *folio) +void folio_end_writeback_pages(struct folio *folio, long nr_pages) { VM_BUG_ON_FOLIO(!folio_test_writeback(folio), folio); @@ -1657,13 +1658,18 @@ void folio_end_writeback(struct folio *folio) * reused before the folio_wake_bit(). */ folio_get(folio); - if (__folio_end_writeback(folio, folio_nr_pages(folio))) + if (__folio_end_writeback(folio, nr_pages)) folio_wake_bit(folio, PG_writeback); filemap_end_dropbehind_write(folio); acct_reclaim_writeback(folio); folio_put(folio); } + +void folio_end_writeback(struct folio *folio) +{ + folio_end_writeback_pages(folio, folio_nr_pages(folio)); +} EXPORT_SYMBOL(folio_end_writeback); /** -- 2.47.3