diff options
| author | Liu Bo <bo.liu@linux.alibaba.com> | 2018-03-31 00:11:56 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2018-04-12 14:49:47 +0200 |
| commit | af7227338135d2f1b1552bf9a6d43e02dcba10b9 (patch) | |
| tree | 523dc6fe41ef91ea1328f5f10e15945938f8a34b | |
| parent | btrfs: Fix possible softlock on single core machines (diff) | |
| download | linux-af7227338135d2f1b1552bf9a6d43e02dcba10b9.tar.xz linux-af7227338135d2f1b1552bf9a6d43e02dcba10b9.zip | |
Btrfs: clean up resources during umount after trans is aborted
Currently if some fatal errors occur, like all IO get -EIO, resources
would be cleaned up when
a) transaction is being committed or
b) BTRFS_FS_STATE_ERROR is set
However, in some rare cases, resources may be left alone after transaction
gets aborted and umount may run into some ASSERT(), e.g.
ASSERT(list_empty(&block_group->dirty_list));
For case a), in btrfs_commit_transaciton(), there're several places at the
beginning where we just call btrfs_end_transaction() without cleaning up
resources. For case b), it is possible that the trans handle doesn't have
any dirty stuff, then only trans hanlde is marked as aborted while
BTRFS_FS_STATE_ERROR is not set, so resources remain in memory.
This makes btrfs also check BTRFS_FS_STATE_TRANS_ABORTED to make sure that
all resources won't stay in memory after umount.
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | fs/btrfs/disk-io.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 07b5e6f7df67..bb38f4098e9c 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3812,7 +3812,8 @@ void close_ctree(struct btrfs_fs_info *fs_info) btrfs_err(fs_info, "commit super ret %d", ret); } - if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state)) + if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state) || + test_bit(BTRFS_FS_STATE_TRANS_ABORTED, &fs_info->fs_state)) btrfs_error_commit_super(fs_info); kthread_stop(fs_info->transaction_kthread); |