diff options
author | Dave Chinner <dchinner@redhat.com> | 2015-03-25 14:05:43 +1100 |
---|---|---|
committer | Dave Chinner <david@fromorbit.com> | 2015-03-25 14:05:43 +1100 |
commit | 445883e8133975fe8d555610c70c1c4c501f0bf8 (patch) | |
tree | 6f1ecf9746c65f6c31a0060812d8cf6f1df90c74 /fs/xfs/xfs_inode.c | |
parent | 95afcf5c7bca93fb84d260f70c304f35ef4c3114 (diff) |
xfs: cleanup xfs_rename error handling
The jump labels are ambiguous and unclear and some of the error
paths are used inconsistently. Rules for error jumps are:
- use out_trans_cancel for unmodified transaction context
- use out_bmap_cancel on ENOSPC errors
- use out_trans_abort when transaction is likely to be dirty.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_inode.c')
-rw-r--r-- | fs/xfs/xfs_inode.c | 59 |
1 files changed, 26 insertions, 33 deletions
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index d0a98bafcbac..426dbf7d094a 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -2788,7 +2788,7 @@ xfs_rename( int error; xfs_bmap_free_t free_list; xfs_fsblock_t first_block; - int cancel_flags; + int cancel_flags = 0; int committed; xfs_inode_t *inodes[__XFS_SORT_INODES]; int num_inodes = __XFS_SORT_INODES; @@ -2802,28 +2802,23 @@ xfs_rename( xfs_sort_for_rename(src_dp, target_dp, src_ip, target_ip, NULL, inodes, &num_inodes); - xfs_bmap_init(&free_list, &first_block); tp = xfs_trans_alloc(mp, XFS_TRANS_RENAME); - cancel_flags = XFS_TRANS_RELEASE_LOG_RES; spaceres = XFS_RENAME_SPACE_RES(mp, target_name->len); error = xfs_trans_reserve(tp, &M_RES(mp)->tr_rename, spaceres, 0); if (error == -ENOSPC) { spaceres = 0; error = xfs_trans_reserve(tp, &M_RES(mp)->tr_rename, 0, 0); } - if (error) { - xfs_trans_cancel(tp, 0); - goto std_return; - } + if (error) + goto out_trans_cancel; + cancel_flags = XFS_TRANS_RELEASE_LOG_RES; /* * Attach the dquots to the inodes */ error = xfs_qm_vop_rename_dqattach(inodes); - if (error) { - xfs_trans_cancel(tp, cancel_flags); - goto std_return; - } + if (error) + goto out_trans_cancel; /* * Lock all the participating inodes. Depending upon whether @@ -2853,9 +2848,11 @@ xfs_rename( if (unlikely((target_dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && (xfs_get_projid(target_dp) != xfs_get_projid(src_ip)))) { error = -EXDEV; - goto error_return; + goto out_trans_cancel; } + xfs_bmap_init(&free_list, &first_block); + /* * Handle RENAME_EXCHANGE flags */ @@ -2864,7 +2861,7 @@ xfs_rename( target_dp, target_name, target_ip, &free_list, &first_block, spaceres); if (error) - goto abort_return; + goto out_trans_abort; goto finish_rename; } @@ -2879,7 +2876,7 @@ xfs_rename( if (!spaceres) { error = xfs_dir_canenter(tp, target_dp, target_name); if (error) - goto error_return; + goto out_trans_cancel; } /* * If target does not exist and the rename crosses @@ -2890,9 +2887,9 @@ xfs_rename( src_ip->i_ino, &first_block, &free_list, spaceres); if (error == -ENOSPC) - goto error_return; + goto out_bmap_cancel; if (error) - goto abort_return; + goto out_trans_abort; xfs_trans_ichgtime(tp, target_dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); @@ -2900,7 +2897,7 @@ xfs_rename( if (new_parent && src_is_directory) { error = xfs_bumplink(tp, target_dp); if (error) - goto abort_return; + goto out_trans_abort; } } else { /* target_ip != NULL */ /* @@ -2915,7 +2912,7 @@ xfs_rename( if (!(xfs_dir_isempty(target_ip)) || (target_ip->i_d.di_nlink > 2)) { error = -EEXIST; - goto error_return; + goto out_trans_cancel; } } @@ -2932,7 +2929,7 @@ xfs_rename( src_ip->i_ino, &first_block, &free_list, spaceres); if (error) - goto abort_return; + goto out_trans_abort; xfs_trans_ichgtime(tp, target_dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); @@ -2943,7 +2940,7 @@ xfs_rename( */ error = xfs_droplink(tp, target_ip); if (error) - goto abort_return; + goto out_trans_abort; if (src_is_directory) { /* @@ -2951,7 +2948,7 @@ xfs_rename( */ error = xfs_droplink(tp, target_ip); if (error) - goto abort_return; + goto out_trans_abort; } } /* target_ip != NULL */ @@ -2968,7 +2965,7 @@ xfs_rename( &first_block, &free_list, spaceres); ASSERT(error != -EEXIST); if (error) - goto abort_return; + goto out_trans_abort; } /* @@ -2994,13 +2991,13 @@ xfs_rename( */ error = xfs_droplink(tp, src_dp); if (error) - goto abort_return; + goto out_trans_abort; } error = xfs_dir_removename(tp, src_dp, src_name, src_ip->i_ino, &first_block, &free_list, spaceres); if (error) - goto abort_return; + goto out_trans_abort; xfs_trans_ichgtime(tp, src_dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); xfs_trans_log_inode(tp, src_dp, XFS_ILOG_CORE); @@ -3018,12 +3015,8 @@ finish_rename: } error = xfs_bmap_finish(&tp, &free_list, &committed); - if (error) { - xfs_bmap_cancel(&free_list); - xfs_trans_cancel(tp, (XFS_TRANS_RELEASE_LOG_RES | - XFS_TRANS_ABORT)); - goto std_return; - } + if (error) + goto out_trans_abort; /* * trans_commit will unlock src_ip, target_ip & decrement @@ -3031,12 +3024,12 @@ finish_rename: */ return xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); - abort_return: +out_trans_abort: cancel_flags |= XFS_TRANS_ABORT; - error_return: +out_bmap_cancel: xfs_bmap_cancel(&free_list); +out_trans_cancel: xfs_trans_cancel(tp, cancel_flags); - std_return: return error; } |