From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 53E43C49360 for ; Sun, 13 Jun 2021 13:40:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 321C961284 for ; Sun, 13 Jun 2021 13:40:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231793AbhFMNmR (ORCPT ); Sun, 13 Jun 2021 09:42:17 -0400 Received: from smtp-out1.suse.de ([195.135.220.28]:34502 "EHLO smtp-out1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231785AbhFMNmQ (ORCPT ); Sun, 13 Jun 2021 09:42:16 -0400 Received: from imap.suse.de (imap-alt.suse-dmz.suse.de [192.168.254.47]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id F3E2621973; Sun, 13 Jun 2021 13:40:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1623591614; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mSEaLkVpkKswEMClQZajPDa8Ztrho6+KzaxTdXhJHkc=; b=12erQFm2dI14QpGCBFVVW6Q+OiVgDww8lx7D/HMzcjH52ob/mO9ds+ywEBVKLadZ4I+rb+ VHL+fKIlvpwnODaApNzwAq3nudLxqf9dYQeVH59JSrdvDoY3xFNDqNgxJBtCzE75MZQSgC z6oYUTswLodupEtQ7sNq0B6QEiaFUu8= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1623591614; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mSEaLkVpkKswEMClQZajPDa8Ztrho6+KzaxTdXhJHkc=; b=SR52TwsqXC1ucvVp4SpcvGamM7kbRp1xM69nQOuMmXgJ7VugjQY3Dp1jKDgKpLFVDSwJQu JUnH9iOFzocjboDw== Received: from imap3-int (imap-alt.suse-dmz.suse.de [192.168.254.47]) by imap.suse.de (Postfix) with ESMTP id 9D421118DD; Sun, 13 Jun 2021 13:40:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1623591614; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mSEaLkVpkKswEMClQZajPDa8Ztrho6+KzaxTdXhJHkc=; b=12erQFm2dI14QpGCBFVVW6Q+OiVgDww8lx7D/HMzcjH52ob/mO9ds+ywEBVKLadZ4I+rb+ VHL+fKIlvpwnODaApNzwAq3nudLxqf9dYQeVH59JSrdvDoY3xFNDqNgxJBtCzE75MZQSgC z6oYUTswLodupEtQ7sNq0B6QEiaFUu8= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1623591614; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mSEaLkVpkKswEMClQZajPDa8Ztrho6+KzaxTdXhJHkc=; b=SR52TwsqXC1ucvVp4SpcvGamM7kbRp1xM69nQOuMmXgJ7VugjQY3Dp1jKDgKpLFVDSwJQu JUnH9iOFzocjboDw== Received: from director2.suse.de ([192.168.254.72]) by imap3-int with ESMTPSA id 0XYyGr4KxmAzJAAALh3uQQ (envelope-from ); Sun, 13 Jun 2021 13:40:14 +0000 From: Goldwyn Rodrigues To: linux-btrfs@vger.kernel.org Cc: Goldwyn Rodrigues Subject: [RFC PATCH 02/31] iomap: Add submit_io to writepage_ops Date: Sun, 13 Jun 2021 08:39:30 -0500 Message-Id: <999c273a4d4fd73ecd9fe80a20e7008eb1124b35.1623567940.git.rgoldwyn@suse.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org From: Goldwyn Rodrigues Filesystems such as btrfs need to perform pre and post bio operations such as csum calculations, device mapping etc. Add a submit_io() function to writepage_ops so filesystems can control how the bio is submitted. Signed-off-by: Goldwyn Rodrigues --- fs/iomap/buffered-io.c | 11 ++++++++++- include/linux/iomap.h | 6 ++++++ 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index d30683734d01..b6fd6d6118a6 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -1209,7 +1209,11 @@ iomap_submit_ioend(struct iomap_writepage_ctx *wpc, struct iomap_ioend *ioend, return error; } - submit_bio(ioend->io_bio); + if (wpc->ops->submit_io) + wpc->ops->submit_io(ioend->io_inode, ioend->io_bio); + else + submit_bio(ioend->io_bio); + return 0; } @@ -1305,8 +1309,13 @@ iomap_add_to_ioend(struct inode *inode, loff_t offset, struct page *page, if (!merged) { if (bio_full(wpc->ioend->io_bio, len)) { + struct bio *bio = wpc->ioend->io_bio; wpc->ioend->io_bio = iomap_chain_bio(wpc->ioend->io_bio); + if (wpc->ops->submit_io) + wpc->ops->submit_io(inode, bio); + else + submit_bio(bio); } bio_add_page(wpc->ioend->io_bio, page, len, poff); } diff --git a/include/linux/iomap.h b/include/linux/iomap.h index c87d0cb0de6d..689d799b1915 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -223,6 +223,12 @@ struct iomap_writeback_ops { * we failed to submit any I/O. */ void (*discard_page)(struct page *page, loff_t fileoff); + + /* + * Optional, allows the filesystem to perform a custom submission of + * bio, such as csum calculations or multi-device bio split + */ + void (*submit_io)(struct inode *inode, struct bio *bio); }; struct iomap_writepage_ctx { -- 2.31.1