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Thu, 16 Sep 2021 10:07:18 +0000 From: Chandan Babu R To: linux-xfs@vger.kernel.org Cc: Chandan Babu R , djwong@kernel.org Subject: [PATCH V3 02/12] xfs: Introduce xfs_iext_max_nextents() helper Date: Thu, 16 Sep 2021 15:36:37 +0530 Message-Id: <20210916100647.176018-3-chandan.babu@oracle.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210916100647.176018-1-chandan.babu@oracle.com> References: <20210916100647.176018-1-chandan.babu@oracle.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: MAXPR0101CA0025.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:d::11) To SA2PR10MB4587.namprd10.prod.outlook.com (2603:10b6:806:114::12) MIME-Version: 1.0 Received: from localhost.localdomain (122.171.167.196) by MAXPR0101CA0025.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:d::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4523.14 via Frontend Transport; Thu, 16 Sep 2021 10:07:16 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: b0855743-74cd-4a52-99c0-08d978f9c418 X-MS-TrafficTypeDiagnostic: SN6PR10MB2878: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:546; 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This helper will be extended further in a future commit when maximum extent counts associated with data/attribute forks are increased. Signed-off-by: Chandan Babu R --- fs/xfs/libxfs/xfs_bmap.c | 9 ++++----- fs/xfs/libxfs/xfs_inode_buf.c | 8 +++----- fs/xfs/libxfs/xfs_inode_fork.c | 5 +++-- fs/xfs/libxfs/xfs_inode_fork.h | 9 +++++++++ fs/xfs/scrub/inode_repair.c | 2 +- 5 files changed, 20 insertions(+), 13 deletions(-) diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index cd97288f6abc..88d4d17821b6 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -76,13 +76,12 @@ xfs_bmap_compute_maxlevels( * ATTR2 we have to assume the worst case scenario of a minimum size * available. */ - if (whichfork == XFS_DATA_FORK) { - maxleafents = MAXEXTNUM; + maxleafents = xfs_iext_max_nextents(mp, whichfork); + if (whichfork == XFS_DATA_FORK) sz = xfs_bmdr_space_calc(MINDBTPTRS); - } else { - maxleafents = MAXAEXTNUM; + else sz = xfs_bmdr_space_calc(MINABTPTRS); - } + maxrootrecs = xfs_bmdr_maxrecs(sz, 0); minleafrecs = mp->m_bmap_dmnr[0]; minnoderecs = mp->m_bmap_dmnr[1]; diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c index 5834d46762d4..51d91ad98b50 100644 --- a/fs/xfs/libxfs/xfs_inode_buf.c +++ b/fs/xfs/libxfs/xfs_inode_buf.c @@ -343,6 +343,7 @@ xfs_dinode_verify_fork( int whichfork) { uint32_t di_nextents = XFS_DFORK_NEXTENTS(dip, whichfork); + xfs_extnum_t max_extents; switch (XFS_DFORK_FORMAT(dip, whichfork)) { case XFS_DINODE_FMT_LOCAL: @@ -364,12 +365,9 @@ xfs_dinode_verify_fork( return __this_address; break; case XFS_DINODE_FMT_BTREE: - if (whichfork == XFS_ATTR_FORK) { - if (di_nextents > MAXAEXTNUM) - return __this_address; - } else if (di_nextents > MAXEXTNUM) { + max_extents = xfs_iext_max_nextents(mp, whichfork); + if (di_nextents > max_extents) return __this_address; - } break; default: return __this_address; diff --git a/fs/xfs/libxfs/xfs_inode_fork.c b/fs/xfs/libxfs/xfs_inode_fork.c index 801a6f7dbd0c..bc12d85df6e1 100644 --- a/fs/xfs/libxfs/xfs_inode_fork.c +++ b/fs/xfs/libxfs/xfs_inode_fork.c @@ -729,6 +729,7 @@ xfs_iext_count_may_overflow( int whichfork, int nr_to_add) { + struct xfs_mount *mp = ip->i_mount; struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); uint64_t max_exts; uint64_t nr_exts; @@ -736,9 +737,9 @@ xfs_iext_count_may_overflow( if (whichfork == XFS_COW_FORK) return 0; - max_exts = (whichfork == XFS_ATTR_FORK) ? MAXAEXTNUM : MAXEXTNUM; + max_exts = xfs_iext_max_nextents(mp, whichfork); - if (XFS_TEST_ERROR(false, ip->i_mount, XFS_ERRTAG_REDUCE_MAX_IEXTENTS)) + if (XFS_TEST_ERROR(false, mp, XFS_ERRTAG_REDUCE_MAX_IEXTENTS)) max_exts = 10; nr_exts = ifp->if_nextents + nr_to_add; diff --git a/fs/xfs/libxfs/xfs_inode_fork.h b/fs/xfs/libxfs/xfs_inode_fork.h index cf82be263b48..6ba38c154647 100644 --- a/fs/xfs/libxfs/xfs_inode_fork.h +++ b/fs/xfs/libxfs/xfs_inode_fork.h @@ -133,6 +133,15 @@ static inline int8_t xfs_ifork_format(struct xfs_ifork *ifp) return ifp->if_format; } +static inline xfs_extnum_t xfs_iext_max_nextents(struct xfs_mount *mp, + int whichfork) +{ + if (whichfork == XFS_DATA_FORK || whichfork == XFS_COW_FORK) + return MAXEXTNUM; + + return MAXAEXTNUM; +} + struct xfs_ifork *xfs_ifork_alloc(enum xfs_dinode_fmt format, xfs_extnum_t nextents); struct xfs_ifork *xfs_iext_state_to_fork(struct xfs_inode *ip, int state); diff --git a/fs/xfs/scrub/inode_repair.c b/fs/xfs/scrub/inode_repair.c index f3140991ee5b..b58820d22304 100644 --- a/fs/xfs/scrub/inode_repair.c +++ b/fs/xfs/scrub/inode_repair.c @@ -1202,7 +1202,7 @@ xrep_inode_blockcounts( return error; if (count >= sc->mp->m_sb.sb_dblocks) return -EFSCORRUPTED; - if (nextents >= MAXAEXTNUM) + if (nextents >= xfs_iext_max_nextents(sc->mp, XFS_ATTR_FORK)) return -EFSCORRUPTED; ifp->if_nextents = nextents; } else { -- 2.30.2