[PATCH v1.1 07/14] btrfs-progs: lowmem: delete unaligned bytes extent data under repair

[Qu Wenruo]

From: Su Yue <suy.f...@cn.fujitsu.com>

If found a extent data item has unaligned part, lowmem repair
just deletes it.

Signed-off-by: Su Yue <suy.f...@cn.fujitsu.com>
Reviewed-by: Qu Wenruo <w...@suse.com>
Signed-off-by: Qu Wenruo <w...@suse.com>
---
 check/mode-lowmem.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/check/mode-lowmem.c b/check/mode-lowmem.c
index 7bd18902e106..bedf18628cc9 100644
--- a/check/mode-lowmem.c
+++ b/check/mode-lowmem.c
@@ -3037,6 +3037,7 @@ out:
 }
 
 /*
+ * If @err contains BYTES_UNALIGNED then delete the extent data item.
  * If @err contains BACKREF_MISSING then add extent of the
  * file_extent_data_item.
  *
@@ -3088,6 +3089,13 @@ static int repair_extent_data_item(struct btrfs_root 
*root,
        else
                parent = 0;
 
+       if (err & BYTES_UNALIGNED) {
+               ret = delete_item(root, pathp);
+               if (!ret)
+                       err = 0;
+               goto out;
+       }
+
        /* now repair only adds backref */
        if ((err & BACKREF_MISSING) == 0)
                return err;
-- 
2.21.0