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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 86999F483C8 for ; Mon, 23 Mar 2026 16:30:38 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id E96006B0088; Mon, 23 Mar 2026 12:30:37 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E45F36B008A; Mon, 23 Mar 2026 12:30:37 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CE6BF6B0092; Mon, 23 Mar 2026 12:30:37 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id BEB066B0088 for ; Mon, 23 Mar 2026 12:30:37 -0400 (EDT) Received: from smtpin29.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 3E9151A0C5A for ; Mon, 23 Mar 2026 16:30:37 +0000 (UTC) X-FDA: 84577866114.29.39334E0 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.223.131]) by imf20.hostedemail.com (Postfix) with ESMTP id E79761C0004 for ; Mon, 23 Mar 2026 16:30:34 +0000 (UTC) Authentication-Results: imf20.hostedemail.com; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=Vnph5DgT; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=oQ7YF+BW; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=O0+9DRAy; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=+RteFXbC; spf=pass (imf20.hostedemail.com: domain of jack@suse.cz designates 195.135.223.131 as permitted sender) smtp.mailfrom=jack@suse.cz; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1774283435; a=rsa-sha256; cv=none; b=vdVmO4PbP0RnGiUX7TeCREs7JBWa2XExuHrV0elRhCF38t11r8WttZ80sJe2Q1Djr5KS+D iQOvMPJ6gdbdhvCOqrEUiCeLQS2dpWE+KhReiXTtjow2tcBcy9nHL8km2rZDgJUMnsBYGK QvdAm2IOalOhB1LxPEb/TvShrYYpOno= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1774283435; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=kNdEBZhmsc6hucLIl4T7bCxD9jPms0lHLZLnsrtP3RY=; b=M++WM1u6m7t8egBJHhI/VhM7m32FBsD7qo7UsJ/GERZeBlg37OWACcYaWeP2+VaeDtKt1v Ps4q1QmQM1C7vFl6FbWse0ZJb/kl2qBQGZVIQGqW2KSxfVHtTlGoSp7hWmaLHe/AUo2LcA SuxxEzL5u0jvuO0ZGT9HOFandNsCXBA= ARC-Authentication-Results: i=1; imf20.hostedemail.com; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=Vnph5DgT; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=oQ7YF+BW; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=O0+9DRAy; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=+RteFXbC; spf=pass (imf20.hostedemail.com: domain of jack@suse.cz designates 195.135.223.131 as permitted sender) smtp.mailfrom=jack@suse.cz; dmarc=none Received: from imap1.dmz-prg2.suse.org (unknown [10.150.64.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 1FC765BE47; Mon, 23 Mar 2026 16:30:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1774283433; 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=kNdEBZhmsc6hucLIl4T7bCxD9jPms0lHLZLnsrtP3RY=; b=Vnph5DgT2nV2ZAC7XCxFcN9qE7YevKBUUUJA8e+4iHRj6e8Uew4OUKOp9jx2W8P8S6L4eR ehK4fgOx/lt4z+wk9K8EdCDS3k95ZgcYVWb3lpujHbBuSx+3vqBxPTtVoCVYT6NsJjXxeK DpoD9cquCS5CgcyiWd7Cg6QLlXlNK5Q= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1774283433; 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=kNdEBZhmsc6hucLIl4T7bCxD9jPms0lHLZLnsrtP3RY=; b=oQ7YF+BW++dZ8jioZswvtnLoCNATMWv9FJGnDRUzEQk9BytpkuNxcpU+Mke0t9K+WIvdHj tPohrXITm3MQxRAQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1774283432; 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=kNdEBZhmsc6hucLIl4T7bCxD9jPms0lHLZLnsrtP3RY=; b=O0+9DRAyTBzvTVPowH+3MjZJbMIw7U1FuyfkyrbU/mWEbIltcYAV4XKloymrJ1QXjhZOjo umulhWLmIYmTK3K8K88+NwZWstSU2Sa6+cTAtgDMShzqPS4SI9NIhOU7YA9+z0yWrSfZEE WwRpvXNahhZZazOl+pF8VMV6CEi1MtQ= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1774283432; 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=kNdEBZhmsc6hucLIl4T7bCxD9jPms0lHLZLnsrtP3RY=; b=+RteFXbC1XKKxrmjqs5+JIHqy8fOOZLUrauz5SD8u872TBzgJ77mPVANYvwc6YBs48zF2V w09D/7vWGCtDEGDA== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 0F6BC43984; Mon, 23 Mar 2026 16:30:32 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id U7a/A6hqwWm7IAAAD6G6ig (envelope-from ); Mon, 23 Mar 2026 16:30:32 +0000 Received: by quack3.suse.cz (Postfix, from userid 1000) id B9CD0A0B3C; Mon, 23 Mar 2026 17:30:27 +0100 (CET) From: Jan Kara To: Cc: , Jan Kara Subject: [PATCH 1/2] writeback: Export folio_prepare_writeback() Date: Mon, 23 Mar 2026 17:30:11 +0100 Message-ID: <20260323163015.3734-3-jack@suse.cz> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260323162617.2421-1-jack@suse.cz> References: <20260323162617.2421-1-jack@suse.cz> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1899; i=jack@suse.cz; h=from:subject; bh=drBU03f7QI88s4x6d0Lpqfmv3CW37W7rs74N1PvScuE=; b=owEBbQGS/pANAwAIAZydqgc/ZEDZAcsmYgBpwWqY2uE6LQXataL8c4wj77Q2GsrSlP23o/0g4 StFXPgh75WJATMEAAEIAB0WIQSrWdEr1p4yirVVKBycnaoHP2RA2QUCacFqmAAKCRCcnaoHP2RA 2W1ZB/96GkEQrkRMbG6QYX9NArHU5xZQowAPFMSC1QChSiy653phew8l5zGucUjP54BozwKlWdq zgBVOXXbCHe090Uz0T5M3JMlrz+tW9eqqlb77iWvlq23CESq6FBYd1mGhcssziKj2yqWcBcoOK7 2dgeJbAcHGVOSZAOKixPVIIa9tRS/ijArlhKy9PTEW+EHWNjgjWiAroxdyJzK13ohRYSkTp5viO 6ejKSQJB+2I9LTpcZt37Ph66fJOrAYH8GREUQ8uybiYvJBzWMollG2J5IXfjUnYaUs4unGxc0qr VIfOMgKVEHq3kjRt2U9DDp+tw0aObHuWvjJVI4WKjazioMzw X-Developer-Key: i=jack@suse.cz; a=openpgp; fpr=93C6099A142276A28BBE35D815BC833443038D8C Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: E79761C0004 X-Stat-Signature: dyje6baa5tqgwie8dgbhopqtnpzjyuuw X-HE-Tag: 1774283434-418548 X-HE-Meta: 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 43fd+6vn nWMoosX/PvigJxsx6xv82n0QI52BPPrKtQFhsyQ72C9tV4Hdz5wf0GTEfS5rv8AgxMXZyvHRwfDihOhaGtBk3sgy65ik1X2nX7T0ebBSFTR+TE3YFBIZ+gHgFBcl4GGqfPo3GA5k++cCMDexhsvE28sEcSGAogffv021Sw0bqNvfDkMaOm49leg9dskT6DucYxhgSd7xRw0l5pJ/qKRxYm0XApzFCyHQ7H78Bf7Q6kJsxFQrsaRuy6tXHinR9iNoLenS41+kUAwHW5ShoqZZD+w5IVE3dZeHJ9bv0 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: The sequence of operations done in folio_prepare_writeback() is needed practically by every writeback method. UDF is unable to easily use writeback_iter() for inodes with inline format (due to complexities with racing conversion and fallback) so export folio_prepare_writeback() for it instead of opencoding it in UDF. Later we can use this helper from other filesystems as well. Signed-off-by: Jan Kara --- include/linux/writeback.h | 2 ++ mm/page-writeback.c | 4 ++-- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/include/linux/writeback.h b/include/linux/writeback.h index e530112c4b3a..3e5d215c8d27 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -357,6 +357,8 @@ bool wb_over_bg_thresh(struct bdi_writeback *wb); struct folio *writeback_iter(struct address_space *mapping, struct writeback_control *wbc, struct folio *folio, int *error); +bool folio_prepare_writeback(struct address_space *mapping, + struct writeback_control *wbc, struct folio *folio); int do_writepages(struct address_space *mapping, struct writeback_control *wbc); void writeback_set_ratelimit(void); diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 601a5e048d12..ceb78798fc00 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2358,7 +2358,7 @@ void tag_pages_for_writeback(struct address_space *mapping, } EXPORT_SYMBOL(tag_pages_for_writeback); -static bool folio_prepare_writeback(struct address_space *mapping, +bool folio_prepare_writeback(struct address_space *mapping, struct writeback_control *wbc, struct folio *folio) { /* @@ -2389,7 +2389,7 @@ static bool folio_prepare_writeback(struct address_space *mapping, return true; } - +EXPORT_SYMBOL_GPL(folio_prepare_writeback); static pgoff_t wbc_end(struct writeback_control *wbc) { -- 2.51.0