diff options
| author | Darrick J. Wong <darrick.wong@oracle.com> | 2020-09-25 17:39:50 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2020-10-07 08:40:28 -0700 |
| commit | 919522e89f8e71fc6a8f8abe17be4011573c6ea0 (patch) | |
| tree | 7e453840b1518c5a739a4bb1a1fd0301514ab7ec /fs/xfs/xfs_bmap_item.c | |
| parent | 929b92f64048d90d23e40a59c47adf59f5026903 (diff) | |
| download | lwn-919522e89f8e71fc6a8f8abe17be4011573c6ea0.tar.gz lwn-919522e89f8e71fc6a8f8abe17be4011573c6ea0.zip | |
xfs: clean up bmap intent item recovery checking
The bmap intent item checking code in xfs_bui_item_recover is spread all
over the function. We should check the recovered log item at the top
before we allocate any resources or do anything else, so do that.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/xfs_bmap_item.c')
| -rw-r--r-- | fs/xfs/xfs_bmap_item.c | 38 |
1 files changed, 12 insertions, 26 deletions
diff --git a/fs/xfs/xfs_bmap_item.c b/fs/xfs/xfs_bmap_item.c index 126df48dae5f..c1f2cc3c42cb 100644 --- a/fs/xfs/xfs_bmap_item.c +++ b/fs/xfs/xfs_bmap_item.c @@ -437,8 +437,6 @@ xfs_bui_item_recover( xfs_fsblock_t inode_fsb; xfs_filblks_t count; xfs_exntst_t state; - enum xfs_bmap_intent_type type; - bool op_ok; unsigned int bui_type; int whichfork; int error = 0; @@ -456,16 +454,19 @@ xfs_bui_item_recover( XFS_FSB_TO_DADDR(mp, bmap->me_startblock)); inode_fsb = XFS_BB_TO_FSB(mp, XFS_FSB_TO_DADDR(mp, XFS_INO_TO_FSB(mp, bmap->me_owner))); - switch (bmap->me_flags & XFS_BMAP_EXTENT_TYPE_MASK) { + state = (bmap->me_flags & XFS_BMAP_EXTENT_UNWRITTEN) ? + XFS_EXT_UNWRITTEN : XFS_EXT_NORM; + whichfork = (bmap->me_flags & XFS_BMAP_EXTENT_ATTR_FORK) ? + XFS_ATTR_FORK : XFS_DATA_FORK; + bui_type = bmap->me_flags & XFS_BMAP_EXTENT_TYPE_MASK; + switch (bui_type) { case XFS_BMAP_MAP: case XFS_BMAP_UNMAP: - op_ok = true; break; default: - op_ok = false; - break; + return -EFSCORRUPTED; } - if (!op_ok || startblock_fsb == 0 || + if (startblock_fsb == 0 || bmap->me_len == 0 || inode_fsb == 0 || startblock_fsb >= mp->m_sb.sb_dblocks || @@ -493,32 +494,17 @@ xfs_bui_item_recover( if (VFS_I(ip)->i_nlink == 0) xfs_iflags_set(ip, XFS_IRECOVERY); - /* Process deferred bmap item. */ - state = (bmap->me_flags & XFS_BMAP_EXTENT_UNWRITTEN) ? - XFS_EXT_UNWRITTEN : XFS_EXT_NORM; - whichfork = (bmap->me_flags & XFS_BMAP_EXTENT_ATTR_FORK) ? - XFS_ATTR_FORK : XFS_DATA_FORK; - bui_type = bmap->me_flags & XFS_BMAP_EXTENT_TYPE_MASK; - switch (bui_type) { - case XFS_BMAP_MAP: - case XFS_BMAP_UNMAP: - type = bui_type; - break; - default: - XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, mp); - error = -EFSCORRUPTED; - goto err_inode; - } xfs_trans_ijoin(tp, ip, 0); count = bmap->me_len; - error = xfs_trans_log_finish_bmap_update(tp, budp, type, ip, whichfork, - bmap->me_startoff, bmap->me_startblock, &count, state); + error = xfs_trans_log_finish_bmap_update(tp, budp, bui_type, ip, + whichfork, bmap->me_startoff, bmap->me_startblock, + &count, state); if (error) goto err_inode; if (count > 0) { - ASSERT(type == XFS_BMAP_UNMAP); + ASSERT(bui_type == XFS_BMAP_UNMAP); irec.br_startblock = bmap->me_startblock; irec.br_blockcount = count; irec.br_startoff = bmap->me_startoff; |