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Thu, 29 May 2025 11:32:28 +0000 (GMT) X-AuditID: b6c32a29-55afd7000000223e-21-683845cc5b4a Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgms1p1new.samsung.com (Symantec Messaging Gateway) with SMTP id 5B.D0.08766.CC548386; Thu, 29 May 2025 20:32:28 +0900 (KST) Received: from localhost.localdomain (unknown [107.99.41.245]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20250529113224epsmtip2211a0716625a96f0108b68b63ae02743~D-CuAx6332456924569epsmtip2I; Thu, 29 May 2025 11:32:23 +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, p.raghav@samsung.com, da.gomez@samsung.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 , Anuj Gupta Subject: [PATCH 03/13] writeback: link bdi_writeback to its corresponding bdi_writeback_ctx Date: Thu, 29 May 2025 16:44:54 +0530 Message-Id: <20250529111504.89912-4-kundan.kumar@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250529111504.89912-1-kundan.kumar@samsung.com> Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrOIsWRmVeSWpSXmKPExsWy7bCSvO4ZV4sMg+09XBbb1u1mt5izfg2b xYV1qxktWnf+Z7FomvCX2WL13X42i9eHPzFanJ56lsliyyV7i/eXtzFZrL65htFiy7F7jBaX n/BZ7J7+j9Xi5oGdTBYrVx9lspg9vZnJ4sn6WcwWW798ZbW4tMjdYs/ekywW99b8Z7W4cOA0 q8WNCU8ZLZ7t3shs8XlpC7vFwVMd7Baf5gINOf/3OKvF7x9z2BzkPE4tkvDYOesuu8fmFVoe l8+Wemxa1cnmsenTJHaPEzN+s3i82DyT0WP3gs9MHrtvNrB5nLtY4fF+31U2j74tqxg9ps6u 9ziz4Ai7x4ppF5kChKK4bFJSczLLUov07RK4MrZtNyu4xF9xYotVA+NTni5GTg4JAROJKU9n sHUxcnEICexmlFhydzILREJGYvfdnawQtrDEyn/P2SGKPjJKbJvYApTg4GAT0JX40RQKEhcR uMksce7sGbAGZoF/jBK7X+mA1AgLREvs2FkDEmYRUJXY3HGPEcTmFbCV+La5nx1ivrzEzEvf wWxOATuJRUu+gtUIAdUsvbmWBaJeUOLkzCcsEOPlJZq3zmaewCgwC0lqFpLUAkamVYySqQXF uem5xYYFhnmp5XrFibnFpXnpesn5uZsYwWlBS3MH4/ZVH/QOMTJxMB5ilOBgVhLhbbI3yxDi TUmsrEotyo8vKs1JLT7EKM3BoiTOK/6iN0VIID2xJDU7NbUgtQgmy8TBKdXAxDF/zyENzwxX U1nz9ifb/Y/80FU4U7SrJ6x9+YcHbv/rnVtmfVBbWCF08HNluNwLrnWy3bcvZPOfcuTN6grl WeP4trE+LuFHya/tvW+9bPLX5S825D0gaDRT1/1BbRyDZk7V9hnWclaZWbw8B94mif5If1lR 9fTQOebk3I/WhZ3tCb/2SnQfT0hg3xV3+FjN1rZvXQcbH92Skd84T36n8Z18f2bdK39dVinF 82mnlWrrbNfZ+fOc+cR5B/vWVUfcv9KktYDrv8SH/YZX4lYU+N81ypi37OmToJXxSnt+JspP OKUnrNtUw/Y2aoqG+8UHqn6bldfOT52Won7O3Thn+7fOVa8fFb6P33B2cdYzJZbijERDLeai 4kQAd51hDnoDAAA= X-CMS-MailID: 20250529113228epcas5p1db88ab42c2dac0698d715e38bd5e0896 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P cpgsPolicy: CPGSC10-542,Y X-CFilter-Loop: Reflected X-CMS-RootMailID: 20250529113228epcas5p1db88ab42c2dac0698d715e38bd5e0896 References: <20250529111504.89912-1-kundan.kumar@samsung.com> Introduce a bdi_writeback_ctx field in bdi_writeback. This helps in fetching the writeback context from the bdi_writeback. Signed-off-by: Kundan Kumar Signed-off-by: Anuj Gupta --- mm/backing-dev.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/mm/backing-dev.c b/mm/backing-dev.c index adf87b036827..5479e2d34160 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -513,15 +513,16 @@ static void wb_update_bandwidth_workfn(struct work_struct *work) */ #define INIT_BW (100 << (20 - PAGE_SHIFT)) -static int wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi, - gfp_t gfp) +static int wb_init(struct bdi_writeback *wb, + struct bdi_writeback_ctx *bdi_wb_ctx, + struct backing_dev_info *bdi, gfp_t gfp) { int err; memset(wb, 0, sizeof(*wb)); wb->bdi = bdi; - wb->bdi_wb_ctx = bdi->wb_ctx_arr[0]; + wb->bdi_wb_ctx = bdi_wb_ctx; wb->last_old_flush = jiffies; INIT_LIST_HEAD(&wb->b_dirty); INIT_LIST_HEAD(&wb->b_io); @@ -698,7 +699,7 @@ static int cgwb_create(struct backing_dev_info *bdi, goto out_put; } - ret = wb_init(wb, bdi, gfp); + ret = wb_init(wb, bdi_wb_ctx, bdi, gfp); if (ret) goto err_free; @@ -843,7 +844,7 @@ static int cgwb_bdi_init(struct backing_dev_info *bdi) mutex_init(&bdi->cgwb_release_mutex); init_rwsem(&bdi_wb_ctx->wb_switch_rwsem); - ret = wb_init(&bdi_wb_ctx->wb, bdi, GFP_KERNEL); + ret = wb_init(&bdi_wb_ctx->wb, bdi_wb_ctx, bdi, GFP_KERNEL); if (!ret) { bdi_wb_ctx->wb.memcg_css = &root_mem_cgroup->css; bdi_wb_ctx->wb.blkcg_css = blkcg_root_css; @@ -1000,7 +1001,7 @@ static int cgwb_bdi_init(struct backing_dev_info *bdi) for_each_bdi_wb_ctx(bdi, bdi_wb_ctx) { int ret; - ret = wb_init(&bdi_wb_ctx->wb, bdi, GFP_KERNEL); + ret = wb_init(&bdi_wb_ctx->wb, bdi_wb_ctx, bdi, GFP_KERNEL); if (ret) return ret; } -- 2.25.1