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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0BBBFC54EBD for ; Mon, 9 Jan 2023 05:18:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236191AbjAIFSX (ORCPT ); Mon, 9 Jan 2023 00:18:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53570 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231135AbjAIFSS (ORCPT ); Mon, 9 Jan 2023 00:18:18 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3CEEACE16; Sun, 8 Jan 2023 21:18:15 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=20JVe/q5nqvxBF2DQBmPeH9KaV31rTvIVcnyqDD6QmU=; b=tx0zFFcHpu3W2ppNLSOI9B5Sz+ xd91xrR9fMh4Z6dRVmSBn0jkXtna1ZZDZn0uFhvE6MiSIlY8+hIE0Lrio1bwW+2uWiaiMwb/Wpsd6 zJ8jSC2IElx3hY6ACHIcBjHn5xFGDTdpUCYWPxzpWl+sZ3GaZrI8u759dIKXifFdjiQM8gCO3a2nD JiCbF9/p1SucWAF0/taqy5CyWt3rpIpVpekZy0IdnRdWprkiL8MqmcxZn2XHNo1NIrzvk9pui+NL5 TK+MByXCi2QINbqO4iSHVv7NTJS/A9pOe9xQJ+MR5d0PJly663FCWwH722+gI7EaL+Ab+Hdq4zj07 OEHsN6BA==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pEkYD-0020wy-CL; Mon, 09 Jan 2023 05:18:25 +0000 From: "Matthew Wilcox (Oracle)" Cc: "Matthew Wilcox (Oracle)" , Jeff Layton , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Christoph Hellwig Subject: [PATCH 05/11] page-writeback: Convert folio_write_one() to use an errseq Date: Mon, 9 Jan 2023 05:18:17 +0000 Message-Id: <20230109051823.480289-6-willy@infradead.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230109051823.480289-1-willy@infradead.org> References: <20230109051823.480289-1-willy@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use the errseq infrastructure to detect an error due to writing back this folio instead of the old error checking code. Signed-off-by: Matthew Wilcox (Oracle) --- mm/page-writeback.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff --git a/mm/page-writeback.c b/mm/page-writeback.c index ad608ef2a243..491b70dad994 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2610,15 +2610,12 @@ int do_writepages(struct address_space *mapping, struct writeback_control *wbc) * * The folio must be locked by the caller and will be unlocked upon return. * - * Note that the mapping's AS_EIO/AS_ENOSPC flags will be cleared when this - * function returns. - * * Return: %0 on success, negative error code otherwise */ int folio_write_one(struct folio *folio) { struct address_space *mapping = folio->mapping; - int ret = 0; + int err = 0; struct writeback_control wbc = { .sync_mode = WB_SYNC_ALL, .nr_to_write = folio_nr_pages(folio), @@ -2629,18 +2626,20 @@ int folio_write_one(struct folio *folio) folio_wait_writeback(folio); if (folio_clear_dirty_for_io(folio)) { + errseq_t since = filemap_sample_wb_err(mapping); + folio_get(folio); - ret = mapping->a_ops->writepage(&folio->page, &wbc); - if (ret == 0) + err = mapping->a_ops->writepage(&folio->page, &wbc); + if (!err) { folio_wait_writeback(folio); + err = filemap_check_wb_err(mapping, since); + } folio_put(folio); } else { folio_unlock(folio); } - if (!ret) - ret = filemap_check_errors(mapping); - return ret; + return err; } EXPORT_SYMBOL(folio_write_one); -- 2.35.1 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]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7DB81C54EBD for ; Mon, 9 Jan 2023 05:18:30 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C11308E0006; Mon, 9 Jan 2023 00:18:23 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 870F28E000B; Mon, 9 Jan 2023 00:18:23 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 551F08E0009; 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Signed-off-by: Matthew Wilcox (Oracle) --- mm/page-writeback.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff --git a/mm/page-writeback.c b/mm/page-writeback.c index ad608ef2a243..491b70dad994 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2610,15 +2610,12 @@ int do_writepages(struct address_space *mapping, struct writeback_control *wbc) * * The folio must be locked by the caller and will be unlocked upon return. * - * Note that the mapping's AS_EIO/AS_ENOSPC flags will be cleared when this - * function returns. - * * Return: %0 on success, negative error code otherwise */ int folio_write_one(struct folio *folio) { struct address_space *mapping = folio->mapping; - int ret = 0; + int err = 0; struct writeback_control wbc = { .sync_mode = WB_SYNC_ALL, .nr_to_write = folio_nr_pages(folio), @@ -2629,18 +2626,20 @@ int folio_write_one(struct folio *folio) folio_wait_writeback(folio); if (folio_clear_dirty_for_io(folio)) { + errseq_t since = filemap_sample_wb_err(mapping); + folio_get(folio); - ret = mapping->a_ops->writepage(&folio->page, &wbc); - if (ret == 0) + err = mapping->a_ops->writepage(&folio->page, &wbc); + if (!err) { folio_wait_writeback(folio); + err = filemap_check_wb_err(mapping, since); + } folio_put(folio); } else { folio_unlock(folio); } - if (!ret) - ret = filemap_check_errors(mapping); - return ret; + return err; } EXPORT_SYMBOL(folio_write_one); -- 2.35.1