From: Wang Shilong <[email protected]>

Scrubing supers is not in a transaction context, when trying to
write supers to disk, we should check if we are trying to
scrub supers.Fix it.

Signed-off-by: Wang Shilong <[email protected]>
---
 fs/btrfs/disk-io.c     | 2 ++
 fs/btrfs/transaction.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 419968e..0debb19 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3582,7 +3582,9 @@ int btrfs_commit_super(struct btrfs_root *root)
                return ret;
        }
 
+       btrfs_scrub_pause_super(root);
        ret = write_ctree_super(NULL, root, 0);
+       btrfs_scrub_continue_super(root);
        return ret;
 }
 
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 277fe81..3ebcbbd 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1892,7 +1892,9 @@ int btrfs_commit_transaction(struct btrfs_trans_handle 
*trans,
                goto cleanup_transaction;
        }
 
+       btrfs_scrub_pause_super(root);
        ret = write_ctree_super(trans, root, 0);
+       btrfs_scrub_continue_super(root);
        if (ret) {
                mutex_unlock(&root->fs_info->tree_log_mutex);
                goto cleanup_transaction;
-- 
1.7.11.7

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