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Tue, 14 Oct 2025 12:10:37 +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 06/16] writeback: invoke all writeback contexts for flusher and dirtytime writeback Date: Tue, 14 Oct 2025 17:38:35 +0530 Message-Id: <20251014120845.2361-7-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: 20251014121042epcas5p16a955879f8aaca4d0a4fd50bc5344f55 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: 20251014121042epcas5p16a955879f8aaca4d0a4fd50bc5344f55 References: <20251014120845.2361-1-kundan.kumar@samsung.com> X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 58E4340018 X-Stat-Signature: 3kowmfipzsq8s5gfz38q8shgu1pr6fen X-HE-Tag: 1760443847-586477 X-HE-Meta: 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 rqbuthUj ifUpwiDSDdSsT4Hc2mzNlxktSDWQFAEjcmEu0kPY3hLsGYVUnZfLAmH3jg1d7Aqs4zCmXzbbgAEBp2YoMWBaEm+LjNmfJ1hhuf4C9mh+pVDcWJpAfLm43jh4CPN+DqHwNaIfMs4KvrmbjRbI9/AyuWtc5QnyQK1B8Rq3scCdFTNGBnGJLT2A4//hDwLGZPD2uU7VA 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: Modify flusher and dirtytime logic to iterate through all the writeback contexts. Signed-off-by: Kundan Kumar Signed-off-by: Anuj Gupta --- fs/fs-writeback.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 93f8ea340247..432f392c8256 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -2389,12 +2389,14 @@ static void __wakeup_flusher_threads_bdi(struct backing_dev_info *bdi, enum wb_reason reason) { struct bdi_writeback *wb; + struct bdi_writeback_ctx *bdi_wb_ctx; if (!bdi_has_dirty_io(bdi)) return; - list_for_each_entry_rcu(wb, &bdi->wb_ctx[0]->wb_list, bdi_node) - wb_start_writeback(wb, reason); + for_each_bdi_wb_ctx(bdi, bdi_wb_ctx) + list_for_each_entry_rcu(wb, &bdi_wb_ctx->wb_list, bdi_node) + wb_start_writeback(wb, reason); } void wakeup_flusher_threads_bdi(struct backing_dev_info *bdi, @@ -2444,15 +2446,17 @@ static DECLARE_DELAYED_WORK(dirtytime_work, wakeup_dirtytime_writeback); static void wakeup_dirtytime_writeback(struct work_struct *w) { struct backing_dev_info *bdi; + struct bdi_writeback_ctx *bdi_wb_ctx; rcu_read_lock(); list_for_each_entry_rcu(bdi, &bdi_list, bdi_list) { struct bdi_writeback *wb; - list_for_each_entry_rcu(wb, &bdi->wb_ctx[0]->wb_list, - bdi_node) - if (!list_empty(&wb->b_dirty_time)) - wb_wakeup(wb); + for_each_bdi_wb_ctx(bdi, bdi_wb_ctx) + list_for_each_entry_rcu(wb, &bdi_wb_ctx->wb_list, + bdi_node) + if (!list_empty(&wb->b_dirty_time)) + wb_wakeup(wb); } rcu_read_unlock(); schedule_delayed_work(&dirtytime_work, dirtytime_expire_interval * HZ); -- 2.25.1