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Tue, 14 Oct 2025 12:11:02 +0000 (GMT) From: Kundan Kumar To: jaegeuk@kernel.org, chao@kernel.org, viro@zeniv.linux.org.uk, brauner@kernel.org, jack@suse.cz, miklos@szeredi.hu, agruenba@redhat.com, trondmy@kernel.org, anna@kernel.org, akpm@linux-foundation.org, willy@infradead.org, mcgrof@kernel.org, clm@meta.com, david@fromorbit.com, amir73il@gmail.com, axboe@kernel.dk, hch@lst.de, ritesh.list@gmail.com, djwong@kernel.org, dave@stgolabs.net, wangyufei@vivo.com Cc: linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, gfs2@lists.linux.dev, linux-nfs@vger.kernel.org, linux-mm@kvack.org, gost.dev@samsung.com, kundan.kumar@samsung.com, anuj20.g@samsung.com, vishak.g@samsung.com, joshi.k@samsung.com Subject: [PATCH v2 10/16] fuse: add support for multiple writeback contexts in fuse Date: Tue, 14 Oct 2025 17:38:39 +0530 Message-Id: <20251014120845.2361-11-kundan.kumar@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20251014120845.2361-1-kundan.kumar@samsung.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CMS-MailID: 20251014121108epcas5p1d68e41bdb1d51ae137b9bb22a7d16fd1 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" CMS-TYPE: 105P cpgsPolicy: CPGSC10-542,Y X-CFilter-Loop: Reflected X-CMS-RootMailID: 20251014121108epcas5p1d68e41bdb1d51ae137b9bb22a7d16fd1 References: <20251014120845.2361-1-kundan.kumar@samsung.com> X-Rspam-User: X-Stat-Signature: q4g3uxbn9kzhyab1ayfu7hgxy3oe6c6g X-Rspamd-Queue-Id: 3CC351C0004 X-Rspamd-Server: rspam09 X-HE-Tag: 1760443871-219545 X-HE-Meta: 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 IERGelfD wgQGBzdy3iCTvD2vdIQ8FM4yuTgT0pLG8j3V+K4SJk0qsvfk3O/5QJZwOw1iRmxMuruRQE6tGm2ZVFdck5OlPBmxddLLbrBzgWbL+ 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: Made a helper to fetch writeback context to which an inode is affined. Use it to perform writeback related operations. Signed-off-by: Kundan Kumar Signed-off-by: Anuj Gupta --- fs/fuse/file.c | 7 +++---- include/linux/backing-dev.h | 17 +++++++++++++++++ 2 files changed, 20 insertions(+), 4 deletions(-) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 8c823a661139..9c7f0e4b741f 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1823,7 +1823,6 @@ static void fuse_writepage_finish(struct fuse_writepage_args *wpa) struct fuse_args_pages *ap = &wpa->ia.ap; struct inode *inode = wpa->inode; struct fuse_inode *fi = get_fuse_inode(inode); - struct backing_dev_info *bdi = inode_to_bdi(inode); int i; for (i = 0; i < ap->num_folios; i++) { @@ -1833,8 +1832,8 @@ static void fuse_writepage_finish(struct fuse_writepage_args *wpa) * contention and noticeably improves performance. */ iomap_finish_folio_write(inode, ap->folios[i], 1); - dec_wb_stat(&bdi->wb_ctx[0]->wb, WB_WRITEBACK); - wb_writeout_inc(&bdi->wb_ctx[0]->wb); + bdi_wb_stat_mod(inode, -1); + bdi_wb_writeout_inc(inode); } wake_up(&fi->page_waitq); @@ -2017,7 +2016,7 @@ static void fuse_writepage_args_page_fill(struct fuse_writepage_args *wpa, struc ap->descs[folio_index].offset = offset; ap->descs[folio_index].length = len; - inc_wb_stat(&inode_to_bdi(inode)->wb_ctx[0]->wb, WB_WRITEBACK); + bdi_wb_stat_mod(inode, 1); } static struct fuse_writepage_args *fuse_writepage_args_setup(struct folio *folio, diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index bb35f8fa4973..fb042e593c16 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -46,6 +46,9 @@ extern struct list_head bdi_list; extern struct workqueue_struct *bdi_wq; +static inline struct bdi_writeback_ctx * +fetch_bdi_writeback_ctx(struct inode *inode); + static inline bool wb_has_dirty_io(struct bdi_writeback *wb) { return test_bit(WB_has_dirty_io, &wb->state); @@ -103,6 +106,20 @@ static inline s64 wb_stat_sum(struct bdi_writeback *wb, enum wb_stat_item item) extern void wb_writeout_inc(struct bdi_writeback *wb); +static inline void bdi_wb_stat_mod(struct inode *inode, s64 amount) +{ + struct bdi_writeback_ctx *bdi_wb_ctx = fetch_bdi_writeback_ctx(inode); + + wb_stat_mod(&bdi_wb_ctx->wb, WB_WRITEBACK, amount); +} + +static inline void bdi_wb_writeout_inc(struct inode *inode) +{ + struct bdi_writeback_ctx *bdi_wb_ctx = fetch_bdi_writeback_ctx(inode); + + wb_writeout_inc(&bdi_wb_ctx->wb); +} + /* * maximal error of a stat counter. */ -- 2.25.1