From patchwork Wed Jan 6 01:01:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qu Wenruo X-Patchwork-Id: 12000671 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,URIBL_BLOCKED, 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 7C3E7C433E9 for ; Wed, 6 Jan 2021 01:03:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3BF21221E2 for ; Wed, 6 Jan 2021 01:03:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727056AbhAFBDr (ORCPT ); Tue, 5 Jan 2021 20:03:47 -0500 Received: from mx2.suse.de ([195.135.220.15]:45908 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726963AbhAFBDq (ORCPT ); Tue, 5 Jan 2021 20:03:46 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1609894950; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=OJPXmJiFmLPdDZ0HBs8y8UuKqernRptf0nL55f7j3nk=; b=GI5kCqZUE39IR9rzgtCs1SKzX1VVCqE7b9Avg9hruOmcMuERoj9CBS9Q/ugS21Ks0c5CGU 1D6tD89N4F892cNdlZm+LQtoDsM4fs0MSC91xgU1dMtMNth7e98iieHddkuyNisW1PYnhj nj6mTfwl/D+aqilte6R207rtXz83Hf8= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 47479AF58 for ; Wed, 6 Jan 2021 01:02:30 +0000 (UTC) From: Qu Wenruo To: linux-btrfs@vger.kernel.org Subject: [PATCH v3 13/22] btrfs: subpage: introduce helper for subpage error status Date: Wed, 6 Jan 2021 09:01:52 +0800 Message-Id: <20210106010201.37864-14-wqu@suse.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210106010201.37864-1-wqu@suse.com> References: <20210106010201.37864-1-wqu@suse.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org This patch introduce the following functions to handle btrfs subpage error status: - btrfs_subpage_set_error() - btrfs_subpage_clear_error() - btrfs_subpage_test_error() Those helpers can only be called when the range is ensured to be inside the page. - btrfs_page_set_error() - btrfs_page_clear_error() - btrfs_page_test_error() Those helpers can handle both regular sector size and subpage without problem. Signed-off-by: Qu Wenruo --- fs/btrfs/subpage.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/fs/btrfs/subpage.h b/fs/btrfs/subpage.h index 2b2d25cc6cba..25f6d0cd1a1e 100644 --- a/fs/btrfs/subpage.h +++ b/fs/btrfs/subpage.h @@ -24,6 +24,7 @@ struct btrfs_subpage { /* Common members for both data and metadata pages */ spinlock_t lock; u16 uptodate_bitmap; + u16 error_bitmap; union { /* Structures only used by metadata */ struct { @@ -130,6 +131,35 @@ static inline void btrfs_subpage_clear_uptodate(struct btrfs_fs_info *fs_info, spin_unlock_irqrestore(&subpage->lock, flags); } +static inline void btrfs_subpage_set_error(struct btrfs_fs_info *fs_info, + struct page *page, u64 start, + u32 len) +{ + struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private; + u16 tmp = btrfs_subpage_calc_bitmap(fs_info, page, start, len); + unsigned long flags; + + spin_lock_irqsave(&subpage->lock, flags); + subpage->error_bitmap |= tmp; + SetPageError(page); + spin_unlock_irqrestore(&subpage->lock, flags); +} + +static inline void btrfs_subpage_clear_error(struct btrfs_fs_info *fs_info, + struct page *page, u64 start, + u32 len) +{ + struct btrfs_subpage *subpage = (struct btrfs_subpage *)page->private; + u16 tmp = btrfs_subpage_calc_bitmap(fs_info, page, start, len); + unsigned long flags; + + spin_lock_irqsave(&subpage->lock, flags); + subpage->error_bitmap &= ~tmp; + if (subpage->error_bitmap == 0) + ClearPageError(page); + spin_unlock_irqrestore(&subpage->lock, flags); +} + /* * Unlike set/clear which is dependent on each page status, for test all bits * are tested in the same way. @@ -149,6 +179,7 @@ static inline bool btrfs_subpage_test_##name(struct btrfs_fs_info *fs_info, \ return ret; \ } DECLARE_BTRFS_SUBPAGE_TEST_OP(uptodate); +DECLARE_BTRFS_SUBPAGE_TEST_OP(error); /* * Note that, in selftest, especially extent-io-tests, we can have empty @@ -185,5 +216,6 @@ static inline bool btrfs_page_test_##name(struct btrfs_fs_info *fs_info, \ } DECLARE_BTRFS_PAGE_OPS(uptodate, SetPageUptodate, ClearPageUptodate, PageUptodate); +DECLARE_BTRFS_PAGE_OPS(error, SetPageError, ClearPageError, PageError); #endif /* BTRFS_SUBPAGE_H */