From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailout2.samsung.com (mailout2.samsung.com [203.254.224.25]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 716D6288C13 for ; Tue, 14 Oct 2025 12:11:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=203.254.224.25 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760443878; cv=none; b=Q2bpgc6kI7glFxghsPiqSlTwRh7RfWum/N5vNvRj4/a1LayclE1zoCblGJOc9bezulJqGK1d0gxcVBg/KUjYdzlZc5s2n7NEcM08gC4gXt2ypXMxAm9tYD+yMJ/OKcS78+ZPRol6ERGMjp+uWUzHeQJA6NVi4hvwZfGHHfKwSis= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760443878; c=relaxed/simple; bh=bpZkfr4SnXVSOLxQDPBa9KgBnuoAWvwoPHhqI97UVzw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:MIME-Version: Content-Type:References; b=bi6u7JXiweNT7ljaXjucVLURxMgzpApzhgkbvCJmHRMGEHJ0YmCfa5JzVw7jzvmNaVFarixdPiWLJDhaUgETGqf3W5XLEJFdJ26yOcWi9wIx7ZjgwNHVqSB9pq/1MBnPDO93rVU6ZIWWSq1/KYWJzO/t1kyZ7CQD3vAs8Dln9QY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com; spf=pass smtp.mailfrom=samsung.com; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b=KXVPMq6j; arc=none smtp.client-ip=203.254.224.25 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=samsung.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="KXVPMq6j" Received: from epcas5p4.samsung.com (unknown [182.195.41.42]) by mailout2.samsung.com (KnoxPortal) with ESMTP id 20251014121110epoutp02a7f0c4e636113e476d2960285aaa50ec~uWl9sGzhl2440824408epoutp02G for ; Tue, 14 Oct 2025 12:11:10 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout2.samsung.com 20251014121110epoutp02a7f0c4e636113e476d2960285aaa50ec~uWl9sGzhl2440824408epoutp02G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1760443870; bh=C/LvlMlwmoGn4EEu6fl0YJvh1Z+uAYGGiSNYbvlUAoI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KXVPMq6jumEvwP9xqK7fm9mUMAbJiNK54aw0VeA0ye1OrdsNFmudi3+eNXjyAN9eg knmPQEJ8BSMV8cbjaas8eY15dU0ZsO3N1/+Zw7B2LCsMCXMK1LOOJ0Raw+uq5Vh7fJ Q9NCarmAfG2p6B70i8TY7JBDYb8+k/W2PwHFLh2c= Received: from epsnrtp04.localdomain (unknown [182.195.42.156]) by epcas5p1.samsung.com (KnoxPortal) with ESMTPS id 20251014121109epcas5p1450a20b2fb1624046b50ace88f3a111f~uWl8-9sfY3122231222epcas5p1L; Tue, 14 Oct 2025 12:11:09 +0000 (GMT) Received: from epcas5p2.samsung.com (unknown [182.195.38.95]) by epsnrtp04.localdomain (Postfix) with ESMTP id 4cmCjm3nKMz6B9m6; Tue, 14 Oct 2025 12:11:08 +0000 (GMT) Received: from epsmtip1.samsung.com (unknown [182.195.34.30]) by epcas5p1.samsung.com (KnoxPortal) with ESMTPA id 20251014121108epcas5p1d68e41bdb1d51ae137b9bb22a7d16fd1~uWl7o_jJZ1447514475epcas5p1s; Tue, 14 Oct 2025 12:11:08 +0000 (GMT) Received: from localhost.localdomain (unknown [107.99.41.245]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20251014121102epsmtip1b866f23363f52d9d5531fb176e70bee4~uWl27p7SL1256112561epsmtip1F; 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> Precedence: bulk X-Mailing-List: gfs2@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: 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> 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