From: "Darrick J. Wong" <darrick.wong@xxxxxxxxxx>
commit 919522e89f8e71fc6a8f8abe17be4011573c6ea0 upstream.
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@xxxxxxxxxx>
Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Chandan Babu R <chandan.babu@xxxxxxxxxx>
Acked-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/xfs/xfs_bmap_item.c | 38 ++++++++++++--------------------------
1 file changed, 12 insertions(+), 26 deletions(-)
--- a/fs/xfs/xfs_bmap_item.c
+++ b/fs/xfs/xfs_bmap_item.c
@@ -434,9 +434,7 @@ xfs_bui_recover(
xfs_fsblock_t startblock_fsb;
xfs_fsblock_t inode_fsb;
xfs_filblks_t count;
- bool op_ok;
struct xfs_bud_log_item *budp;
- enum xfs_bmap_intent_type type;
int whichfork;
xfs_exntst_t state;
struct xfs_trans *tp;
@@ -462,16 +460,19 @@ xfs_bui_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 ||
@@ -502,32 +503,17 @@ xfs_bui_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;
