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| author | Yan, Zheng <zheng.yan@oracle.com> | 2009-11-12 09:36:34 +0000 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2009-12-17 12:33:35 -0500 |
| commit | 24bbcf0442ee04660a5a030efdbb6d03f1c275cb (patch) | |
| tree | aa57d77d29cc5150b272cc3f6465f10262fcbaac /fs/btrfs/transaction.c | |
| parent | f34f57a3ab4e73304d78c125682f1a53cd3975f2 (diff) | |
| download | kernel_samsung_smdk4412-24bbcf0442ee04660a5a030efdbb6d03f1c275cb.tar.gz kernel_samsung_smdk4412-24bbcf0442ee04660a5a030efdbb6d03f1c275cb.tar.bz2 kernel_samsung_smdk4412-24bbcf0442ee04660a5a030efdbb6d03f1c275cb.zip | |
Btrfs: Add delayed iput
iput() can trigger new transactions if we are dropping the
final reference, so calling it in btrfs_commit_transaction
may end up deadlock. This patch adds delayed iput to avoid
the issue.
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/transaction.c')
| -rw-r--r-- | fs/btrfs/transaction.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 728e8fe5d2c..75b31caade2 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -333,6 +333,9 @@ static int __btrfs_end_transaction(struct btrfs_trans_handle *trans, memset(trans, 0, sizeof(*trans)); kmem_cache_free(btrfs_trans_handle_cachep, trans); + if (throttle) + btrfs_run_delayed_iputs(root); + return 0; } @@ -991,11 +994,11 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, mutex_unlock(&root->fs_info->trans_mutex); if (flush_on_commit) { - btrfs_start_delalloc_inodes(root); - ret = btrfs_wait_ordered_extents(root, 0); + btrfs_start_delalloc_inodes(root, 1); + ret = btrfs_wait_ordered_extents(root, 0, 1); BUG_ON(ret); } else if (snap_pending) { - ret = btrfs_wait_ordered_extents(root, 1); + ret = btrfs_wait_ordered_extents(root, 0, 1); BUG_ON(ret); } @@ -1113,6 +1116,10 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, current->journal_info = NULL; kmem_cache_free(btrfs_trans_handle_cachep, trans); + + if (current != root->fs_info->transaction_kthread) + btrfs_run_delayed_iputs(root); + return ret; } |