diff options
| author | Stefan Behrens <[email protected]> | 2013-09-05 14:58:43 +0000 |
|---|---|---|
| committer | Chris Mason <[email protected]> | 2013-11-12 02:49:26 +0000 |
| commit | 69e9c6c6dc87587d8846e447febedefe037c14f8 (patch) | |
| tree | 557fc35afdf3bbee9ce0f46a2ce16ce1c386133c /fs/btrfs/tests/extent-buffer-tests.c | |
| parent | Linux 3.12 (diff) | |
| download | kernel-69e9c6c6dc87587d8846e447febedefe037c14f8.tar.gz kernel-69e9c6c6dc87587d8846e447febedefe037c14f8.zip | |
Btrfs: eliminate the exceptional root_tree refs=0
The fact that btrfs_root_refs() returned 0 for the tree_root caused
bugs in the past, therefore it is set to 1 with this patch and
(hopefully) all affected code is adapted to this change.
I verified this change by temporarily adding WARN_ON() checks
everywhere where btrfs_root_refs() is used, checking whether the
logic of the code is changed by btrfs_root_refs() returning 1
instead of 0 for root->root_key.objectid == BTRFS_ROOT_TREE_OBJECTID.
With these added checks, I ran the xfstests './check -g auto'.
The two roots chunk_root and log_root_tree that are only referenced
by the superblock and the log_roots below the log_root_tree still
have btrfs_root_refs() == 0, only the tree_root is changed.
Signed-off-by: Stefan Behrens <[email protected]>
Signed-off-by: Josef Bacik <[email protected]>
Signed-off-by: Chris Mason <[email protected]>
Diffstat (limited to 'fs/btrfs/tests/extent-buffer-tests.c')
0 files changed, 0 insertions, 0 deletions