From: "Darrick J. Wong" darrick.wong@oracle.com
commit 64a3f3315bc60f710a0a25c1798ac0ea58c6fa1f upstream.
In most places in XFS, we have a specific order in which we gather resources: grab the inode, allocate a transaction, then lock the inode. xfs_bui_item_recover doesn't do it in that order, so fix it to be more consistent. This also makes the error bailout code a bit less weird.
Signed-off-by: Darrick J. Wong darrick.wong@oracle.com Reviewed-by: Dave Chinner dchinner@redhat.com Reviewed-by: Christoph Hellwig hch@lst.de Reviewed-by: Brian Foster bfoster@redhat.com Signed-off-by: Chandan Babu R chandan.babu@oracle.com Acked-by: Darrick J. Wong djwong@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/xfs/xfs_bmap_item.c | 38 ++++++++++++++++++++++++-------------- 1 file changed, 24 insertions(+), 14 deletions(-)
--- a/fs/xfs/xfs_bmap_item.c +++ b/fs/xfs/xfs_bmap_item.c @@ -22,6 +22,7 @@ #include "xfs_bmap_btree.h" #include "xfs_trans_space.h" #include "xfs_error.h" +#include "xfs_quota.h"
kmem_zone_t *xfs_bui_zone; kmem_zone_t *xfs_bud_zone; @@ -488,21 +489,26 @@ xfs_bui_recover( return -EFSCORRUPTED; }
- error = xfs_trans_alloc(mp, &M_RES(mp)->tr_itruncate, - XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK), 0, 0, &tp); + /* Grab the inode. */ + error = xfs_iget(mp, NULL, bmap->me_owner, 0, 0, &ip); if (error) return error;
- budp = xfs_trans_get_bud(tp, buip); - - /* Grab the inode. */ - error = xfs_iget(mp, tp, bmap->me_owner, 0, XFS_ILOCK_EXCL, &ip); + error = xfs_qm_dqattach(ip); if (error) - goto err_inode; + goto err_rele;
if (VFS_I(ip)->i_nlink == 0) xfs_iflags_set(ip, XFS_IRECOVERY);
+ /* Allocate transaction and do the work. */ + error = xfs_trans_alloc(mp, &M_RES(mp)->tr_itruncate, + XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK), 0, 0, &tp); + if (error) + goto err_rele; + + budp = xfs_trans_get_bud(tp, buip); + xfs_ilock(ip, XFS_ILOCK_EXCL); xfs_trans_ijoin(tp, ip, 0);
count = bmap->me_len; @@ -510,7 +516,7 @@ xfs_bui_recover( whichfork, bmap->me_startoff, bmap->me_startblock, &count, state); if (error) - goto err_inode; + goto err_cancel;
if (count > 0) { ASSERT(bui_type == XFS_BMAP_UNMAP); @@ -522,16 +528,20 @@ xfs_bui_recover( }
set_bit(XFS_BUI_RECOVERED, &buip->bui_flags); + /* Commit transaction, which frees the transaction. */ error = xfs_defer_ops_capture_and_commit(tp, capture_list); + if (error) + goto err_unlock; + xfs_iunlock(ip, XFS_ILOCK_EXCL); xfs_irele(ip); - return error; + return 0;
-err_inode: +err_cancel: xfs_trans_cancel(tp); - if (ip) { - xfs_iunlock(ip, XFS_ILOCK_EXCL); - xfs_irele(ip); - } +err_unlock: + xfs_iunlock(ip, XFS_ILOCK_EXCL); +err_rele: + xfs_irele(ip); return error; }