From: Liu Bo <liubo2...@cn.fujitsu.com>
When the filesystem is readonly, commit transaction is forbiddened.
Signed-off-by: Liu Bo <liubo2...@cn.fujitsu.com>
Signed-off-by: Miao Xie <mi...@cn.fujitsu.com>
---
fs/btrfs/transaction.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 1fffbc0..45c76b9 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1188,6 +1188,13 @@ int btrfs_commit_transaction(struct btrfs_trans_handle
*trans,
unsigned long now = get_seconds();
int flush_on_commit = btrfs_test_opt(root, FLUSHONCOMMIT);
+ /*
+ * Since some error may force btrfs readonly, this can
+ * avoid backgroud writeback.
+ */
+ if (root->fs_info->sb->s_flags & MS_RDONLY)
+ return 0;
+
btrfs_run_ordered_operations(root, 0);
/* make a pass through all the delayed refs we have so far
--
1.7.0.1
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