From patchwork Mon Jul 26 11:45:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chandan Babu R X-Patchwork-Id: 12399303 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 60DADC4338F for ; Mon, 26 Jul 2021 11:46:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 447C660238 for ; Mon, 26 Jul 2021 11:46:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233517AbhGZLFd (ORCPT ); Mon, 26 Jul 2021 07:05:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47994 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233456AbhGZLFd (ORCPT ); Mon, 26 Jul 2021 07:05:33 -0400 Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3E3CAC061757 for ; Mon, 26 Jul 2021 04:46:01 -0700 (PDT) Received: by mail-pj1-x1034.google.com with SMTP id m2-20020a17090a71c2b0290175cf22899cso13847480pjs.2 for ; Mon, 26 Jul 2021 04:46:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=t5tFtySNTcoqYVjZAD1fSWj/eaMueRAEiHn5A4OLxXg=; b=NVryYrpH9n77iSMw1a4b0ZAjphoT5SDB+t4dtP0QLpPwfrlWheuC9MHmhJ6dlRPFxu Tr64NM7JAfkFRS5Z7SHyTw7j3Eg2cvNEGDaIjsF7lIBnarTiTt/oRU7P0Oau7ZSl1N2r u0FvzExYVQGhx8TcRsWn+GyHqy7wWsoH1N0hzv8K0DOvEuz+wMWKEgRq89dZs5CjgFUI CSXVlHPDSm3T0blY9VURrL17dDy0K/zPHGw7D19afMCLiNKyx685VeIxM5al/TL58aAh 3u+EhrIMgbW2lnJxMtFBQWXGvREcHwMnpe2yP6gJg4zgpxHdvZt5BPGaAmJkHGIGnmwo tZKg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=t5tFtySNTcoqYVjZAD1fSWj/eaMueRAEiHn5A4OLxXg=; b=X5nEocySDcXk15XgZfTlNvt1pyxaKrec+iKcVvhmzqCHaaRYp8B1UiEx7Z9mqudyrO PCuB0TT182JwiTj23uRaRtF4kNWxy9QiCiNC034AKOpsDYnvJtJTltyjPiNNrKjB4/Vp o9pFi7mHhs0Hq2f/EnENkNWeBL165wtEq/KfVhg3iaAJ3jIVjkuSp6pfPIOIZ3HZ8KHf nwFjvZruqQovMvI6734KzB+0aXFmhUFQ7ygwX+3QOZ1moA60uMVfjx9Kep7CX6xrQc8n NwB97ewmLIxAth5k7cbGUj9Vt5No2V8BtETs+nulhnb9s887SqVJ/o1gvtIu8mDoLSHW 2Rpw== X-Gm-Message-State: AOAM532sVg2TlG6uriPVjsM94TwXpFZuCB43L+0Ob6dCiWpBvUT0Z0YE 7EAWk9CeKCPmZ+dd27tlsDDfAxY67OM= X-Google-Smtp-Source: ABdhPJxUCVuVA21FeFwxAm854HEi2umjnDEJpQvRsPZoHjmWH1fe2kmxljObgdEHgS4dTpoMjZ/I8A== X-Received: by 2002:a17:90a:404a:: with SMTP id k10mr16899194pjg.145.1627299960606; Mon, 26 Jul 2021 04:46:00 -0700 (PDT) Received: from localhost.localdomain ([122.179.41.55]) by smtp.gmail.com with ESMTPSA id k8sm50833919pgr.91.2021.07.26.04.45.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Jul 2021 04:46:00 -0700 (PDT) From: Chandan Babu R To: linux-xfs@vger.kernel.org Cc: Chandan Babu R , djwong@kernel.org Subject: [PATCH V2 05/12] xfs: Introduce xfs_dfork_nextents() helper Date: Mon, 26 Jul 2021 17:15:34 +0530 Message-Id: <20210726114541.24898-6-chandanrlinux@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210726114541.24898-1-chandanrlinux@gmail.com> References: <20210726114541.24898-1-chandanrlinux@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org This commit replaces the macro XFS_DFORK_NEXTENTS() with the helper function xfs_dfork_nextents(). As of this commit, xfs_dfork_nextents() returns the same value as XFS_DFORK_NEXTENTS(). A future commit which extends inode's extent counter fields will add more logic to this helper. This commit also replaces direct accesses to xfs_dinode->di_[a]nextents with calls to xfs_dfork_nextents(). No functional changes have been made. Signed-off-by: Chandan Babu R --- fs/xfs/libxfs/xfs_format.h | 4 ---- fs/xfs/libxfs/xfs_inode_buf.c | 41 +++++++++++++++++++++++++++++----- fs/xfs/libxfs/xfs_inode_buf.h | 2 ++ fs/xfs/libxfs/xfs_inode_fork.c | 12 ++++++---- fs/xfs/scrub/inode.c | 19 +++++++++------- fs/xfs/scrub/inode_repair.c | 38 +++++++++++++++++++------------ 6 files changed, 81 insertions(+), 35 deletions(-) diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h index 920e3f9c418f..001a4077a7c6 100644 --- a/fs/xfs/libxfs/xfs_format.h +++ b/fs/xfs/libxfs/xfs_format.h @@ -1166,10 +1166,6 @@ enum xfs_dinode_fmt { ((w) == XFS_DATA_FORK ? \ (dip)->di_format : \ (dip)->di_aformat) -#define XFS_DFORK_NEXTENTS(dip,w) \ - ((w) == XFS_DATA_FORK ? \ - be32_to_cpu((dip)->di_nextents) : \ - be16_to_cpu((dip)->di_anextents)) /* * For block and character special files the 32bit dev_t is stored at the diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c index cba9a38f3270..6bef0757fca4 100644 --- a/fs/xfs/libxfs/xfs_inode_buf.c +++ b/fs/xfs/libxfs/xfs_inode_buf.c @@ -342,9 +342,11 @@ xfs_dinode_verify_fork( struct xfs_mount *mp, int whichfork) { - xfs_extnum_t di_nextents = XFS_DFORK_NEXTENTS(dip, whichfork); + xfs_extnum_t di_nextents; xfs_extnum_t max_extents; + di_nextents = xfs_dfork_nextents(mp, dip, whichfork); + switch (XFS_DFORK_FORMAT(dip, whichfork)) { case XFS_DINODE_FMT_LOCAL: /* @@ -375,6 +377,31 @@ xfs_dinode_verify_fork( return NULL; } +xfs_extnum_t +xfs_dfork_nextents( + struct xfs_mount *mp, + struct xfs_dinode *dip, + int whichfork) +{ + xfs_extnum_t nextents = 0; + + switch (whichfork) { + case XFS_DATA_FORK: + nextents = be32_to_cpu(dip->di_nextents); + break; + + case XFS_ATTR_FORK: + nextents = be16_to_cpu(dip->di_anextents); + break; + + default: + ASSERT(0); + break; + } + + return nextents; +} + static xfs_failaddr_t xfs_dinode_verify_forkoff( struct xfs_dinode *dip, @@ -474,6 +501,8 @@ xfs_dinode_verify( uint16_t flags; uint64_t flags2; uint64_t di_size; + xfs_extnum_t nextents; + int64_t nblocks; if (dip->di_magic != cpu_to_be16(XFS_DINODE_MAGIC)) return __this_address; @@ -504,10 +533,12 @@ xfs_dinode_verify( if ((S_ISLNK(mode) || S_ISDIR(mode)) && di_size == 0) return __this_address; + nextents = xfs_dfork_nextents(mp, dip, XFS_DATA_FORK); + nextents += xfs_dfork_nextents(mp, dip, XFS_ATTR_FORK); + nblocks = be64_to_cpu(dip->di_nblocks); + /* Fork checks carried over from xfs_iformat_fork */ - if (mode && - be32_to_cpu(dip->di_nextents) + be16_to_cpu(dip->di_anextents) > - be64_to_cpu(dip->di_nblocks)) + if (mode && nextents > nblocks) return __this_address; if (mode && XFS_DFORK_BOFF(dip) > mp->m_sb.sb_inodesize) @@ -564,7 +595,7 @@ xfs_dinode_verify( default: return __this_address; } - if (dip->di_anextents) + if (xfs_dfork_nextents(mp, dip, XFS_ATTR_FORK)) return __this_address; } diff --git a/fs/xfs/libxfs/xfs_inode_buf.h b/fs/xfs/libxfs/xfs_inode_buf.h index a30b7676098a..ea2c35091609 100644 --- a/fs/xfs/libxfs/xfs_inode_buf.h +++ b/fs/xfs/libxfs/xfs_inode_buf.h @@ -36,6 +36,8 @@ xfs_failaddr_t xfs_inode_validate_extsize(struct xfs_mount *mp, xfs_failaddr_t xfs_inode_validate_cowextsize(struct xfs_mount *mp, uint32_t cowextsize, uint16_t mode, uint16_t flags, uint64_t flags2); +xfs_extnum_t xfs_dfork_nextents(struct xfs_mount *mp, struct xfs_dinode *dip, + int whichfork); static inline uint64_t xfs_inode_encode_bigtime(struct timespec64 tv) { diff --git a/fs/xfs/libxfs/xfs_inode_fork.c b/fs/xfs/libxfs/xfs_inode_fork.c index a1e40df585a3..38dd2dfc31fa 100644 --- a/fs/xfs/libxfs/xfs_inode_fork.c +++ b/fs/xfs/libxfs/xfs_inode_fork.c @@ -107,7 +107,7 @@ xfs_iformat_extents( struct xfs_mount *mp = ip->i_mount; struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); int state = xfs_bmap_fork_to_state(whichfork); - xfs_extnum_t nex = XFS_DFORK_NEXTENTS(dip, whichfork); + xfs_extnum_t nex = xfs_dfork_nextents(mp, dip, whichfork); int size = nex * sizeof(xfs_bmbt_rec_t); struct xfs_iext_cursor icur; struct xfs_bmbt_rec *dp; @@ -226,6 +226,7 @@ xfs_iformat_data_fork( struct xfs_inode *ip, struct xfs_dinode *dip) { + struct xfs_mount *mp = ip->i_mount; struct inode *inode = VFS_I(ip); int error; @@ -234,7 +235,7 @@ xfs_iformat_data_fork( * depend on it. */ ip->i_df.if_format = dip->di_format; - ip->i_df.if_nextents = be32_to_cpu(dip->di_nextents); + ip->i_df.if_nextents = xfs_dfork_nextents(mp, dip, XFS_DATA_FORK); switch (inode->i_mode & S_IFMT) { case S_IFIFO: @@ -301,14 +302,17 @@ xfs_iformat_attr_fork( struct xfs_inode *ip, struct xfs_dinode *dip) { + struct xfs_mount *mp = ip->i_mount; + xfs_extnum_t nextents; int error = 0; + nextents = xfs_dfork_nextents(mp, dip, XFS_ATTR_FORK); + /* * Initialize the extent count early, as the per-format routines may * depend on it. */ - ip->i_afp = xfs_ifork_alloc(dip->di_aformat, - be16_to_cpu(dip->di_anextents)); + ip->i_afp = xfs_ifork_alloc(dip->di_aformat, nextents); switch (ip->i_afp->if_format) { case XFS_DINODE_FMT_LOCAL: diff --git a/fs/xfs/scrub/inode.c b/fs/xfs/scrub/inode.c index 246d11ca133f..a161dac31a6f 100644 --- a/fs/xfs/scrub/inode.c +++ b/fs/xfs/scrub/inode.c @@ -220,6 +220,7 @@ xchk_dinode( unsigned long long isize; uint64_t flags2; xfs_extnum_t nextents; + xfs_extnum_t naextents; prid_t prid; uint16_t flags; uint16_t mode; @@ -378,7 +379,7 @@ xchk_dinode( xchk_inode_extsize(sc, dip, ino, mode, flags); /* di_nextents */ - nextents = be32_to_cpu(dip->di_nextents); + nextents = xfs_dfork_nextents(mp, dip, XFS_DATA_FORK); fork_recs = XFS_DFORK_DSIZE(dip, mp) / sizeof(struct xfs_bmbt_rec); switch (dip->di_format) { case XFS_DINODE_FMT_EXTENTS: @@ -395,10 +396,12 @@ xchk_dinode( break; } + naextents = xfs_dfork_nextents(mp, dip, XFS_ATTR_FORK); + /* di_forkoff */ if (XFS_DFORK_APTR(dip) >= (char *)dip + mp->m_sb.sb_inodesize) xchk_ino_set_corrupt(sc, ino); - if (dip->di_anextents != 0 && dip->di_forkoff == 0) + if (naextents != 0 && dip->di_forkoff == 0) xchk_ino_set_corrupt(sc, ino); if (dip->di_forkoff == 0 && dip->di_aformat != XFS_DINODE_FMT_EXTENTS) xchk_ino_set_corrupt(sc, ino); @@ -410,19 +413,18 @@ xchk_dinode( xchk_ino_set_corrupt(sc, ino); /* di_anextents */ - nextents = be16_to_cpu(dip->di_anextents); fork_recs = XFS_DFORK_ASIZE(dip, mp) / sizeof(struct xfs_bmbt_rec); switch (dip->di_aformat) { case XFS_DINODE_FMT_EXTENTS: - if (nextents > fork_recs) + if (naextents > fork_recs) xchk_ino_set_corrupt(sc, ino); break; case XFS_DINODE_FMT_BTREE: - if (nextents <= fork_recs) + if (naextents <= fork_recs) xchk_ino_set_corrupt(sc, ino); break; default: - if (nextents != 0) + if (naextents != 0) xchk_ino_set_corrupt(sc, ino); } @@ -487,6 +489,7 @@ xchk_inode_xref_bmap( struct xfs_scrub *sc, struct xfs_dinode *dip) { + struct xfs_mount *mp = sc->mp; xfs_extnum_t nextents; xfs_filblks_t count; xfs_filblks_t acount; @@ -500,14 +503,14 @@ xchk_inode_xref_bmap( &nextents, &count); if (!xchk_should_check_xref(sc, &error, NULL)) return; - if (nextents < be32_to_cpu(dip->di_nextents)) + if (nextents < xfs_dfork_nextents(mp, dip, XFS_DATA_FORK)) xchk_ino_xref_set_corrupt(sc, sc->ip->i_ino); error = xfs_bmap_count_blocks(sc->tp, sc->ip, XFS_ATTR_FORK, &nextents, &acount); if (!xchk_should_check_xref(sc, &error, NULL)) return; - if (nextents != be16_to_cpu(dip->di_anextents)) + if (nextents != xfs_dfork_nextents(mp, dip, XFS_ATTR_FORK)) xchk_ino_xref_set_corrupt(sc, sc->ip->i_ino); /* Check nblocks against the inode. */ diff --git a/fs/xfs/scrub/inode_repair.c b/fs/xfs/scrub/inode_repair.c index 042c7d0bc0f5..bdb4685923c0 100644 --- a/fs/xfs/scrub/inode_repair.c +++ b/fs/xfs/scrub/inode_repair.c @@ -602,7 +602,7 @@ xrep_dinode_bad_extents_fork( int i; int fork_size; - nex = XFS_DFORK_NEXTENTS(dip, whichfork); + nex = xfs_dfork_nextents(sc->mp, dip, whichfork); fork_size = nex * sizeof(struct xfs_bmbt_rec); if (fork_size < 0 || fork_size > dfork_size) return true; @@ -636,7 +636,7 @@ xrep_dinode_bad_btree_fork( int nrecs; int level; - if (XFS_DFORK_NEXTENTS(dip, whichfork) <= + if (xfs_dfork_nextents(sc->mp, dip, whichfork) <= dfork_size / sizeof(struct xfs_bmbt_rec)) return true; @@ -831,12 +831,16 @@ xrep_dinode_ensure_forkoff( struct xrep_dinode_stats *dis) { struct xfs_bmdr_block *bmdr; + xfs_extnum_t anextents, dnextents; size_t bmdr_minsz = xfs_bmdr_space_calc(1); unsigned int lit_sz = XFS_LITINO(sc->mp); unsigned int afork_min, dfork_min; trace_xrep_dinode_ensure_forkoff(sc, dip); + dnextents = xfs_dfork_nextents(sc->mp, dip, XFS_DATA_FORK); + anextents = xfs_dfork_nextents(sc->mp, dip, XFS_ATTR_FORK); + /* * Before calling this function, xrep_dinode_core ensured that both * forks actually fit inside their respective literal areas. If this @@ -857,15 +861,14 @@ xrep_dinode_ensure_forkoff( afork_min = XFS_DFORK_SIZE(dip, sc->mp, XFS_ATTR_FORK); break; case XFS_DINODE_FMT_EXTENTS: - if (dip->di_anextents) { + if (anextents) { /* * We must maintain sufficient space to hold the entire * extent map array in the data fork. Note that we * previously zapped the fork if it had no chance of * fitting in the inode. */ - afork_min = sizeof(struct xfs_bmbt_rec) * - be16_to_cpu(dip->di_anextents); + afork_min = sizeof(struct xfs_bmbt_rec) * anextents; } else if (dis->attr_extents > 0) { /* * The attr fork thinks it has zero extents, but we @@ -908,15 +911,14 @@ xrep_dinode_ensure_forkoff( dfork_min = be64_to_cpu(dip->di_size); break; case XFS_DINODE_FMT_EXTENTS: - if (dip->di_nextents) { + if (dnextents) { /* * We must maintain sufficient space to hold the entire * extent map array in the data fork. Note that we * previously zapped the fork if it had no chance of * fitting in the inode. */ - dfork_min = sizeof(struct xfs_bmbt_rec) * - be32_to_cpu(dip->di_nextents); + dfork_min = sizeof(struct xfs_bmbt_rec) * dnextents; } else if (dis->data_extents > 0 || dis->rt_extents > 0) { /* * The data fork thinks it has zero extents, but we @@ -956,7 +958,7 @@ xrep_dinode_ensure_forkoff( * recovery fork, move the attr fork up. */ if (dip->di_format == XFS_DINODE_FMT_EXTENTS && - dip->di_nextents == 0 && + dnextents == 0 && (dis->data_extents > 0 || dis->rt_extents > 0) && bmdr_minsz > XFS_DFORK_DSIZE(dip, sc->mp)) { if (bmdr_minsz + afork_min > lit_sz) { @@ -982,7 +984,7 @@ xrep_dinode_ensure_forkoff( * recovery fork, move the attr fork down. */ if (dip->di_aformat == XFS_DINODE_FMT_EXTENTS && - dip->di_anextents == 0 && + anextents == 0 && dis->attr_extents > 0 && bmdr_minsz > XFS_DFORK_ASIZE(dip, sc->mp)) { if (dip->di_format == XFS_DINODE_FMT_BTREE) { @@ -1019,6 +1021,9 @@ xrep_dinode_zap_forks( struct xfs_dinode *dip, struct xrep_dinode_stats *dis) { + uint64_t nblocks; + xfs_extnum_t nextents; + xfs_extnum_t naextents; uint16_t mode; bool zap_datafork = false; bool zap_attrfork = false; @@ -1028,12 +1033,17 @@ xrep_dinode_zap_forks( mode = be16_to_cpu(dip->di_mode); /* Inode counters don't make sense? */ - if (be32_to_cpu(dip->di_nextents) > be64_to_cpu(dip->di_nblocks)) + nblocks = be64_to_cpu(dip->di_nblocks); + + nextents = xfs_dfork_nextents(sc->mp, dip, XFS_DATA_FORK); + if (nextents > nblocks) zap_datafork = true; - if (be16_to_cpu(dip->di_anextents) > be64_to_cpu(dip->di_nblocks)) + + naextents = xfs_dfork_nextents(sc->mp, dip, XFS_ATTR_FORK); + if (naextents > nblocks) zap_attrfork = true; - if (be32_to_cpu(dip->di_nextents) + be16_to_cpu(dip->di_anextents) > - be64_to_cpu(dip->di_nblocks)) + + if (nextents + naextents > nblocks) zap_datafork = zap_attrfork = true; if (!zap_datafork)