btrfs-progs: extent-tree: avoid allocating tree block that crosses stripe boundary

Now find_free_extent() function won't return a metadata extent that
crosses stripe boundary.

Reported-by: Chris Murphy <lists@colorremedies.com>
Reported-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/extent-tree.c b/extent-tree.c
index ac582e0..6f07e4b 100644 (file)
--- a/extent-tree.c
+++ b/extent-tree.c
@@ -2605,6 +2605,11 @@ check_failed:
        }
 
        if (!(data & BTRFS_BLOCK_GROUP_DATA)) {
+               if (check_crossing_stripes(ins->objectid, num_bytes)) {
+                       search_start = round_down(ins->objectid + num_bytes,
+                                                 BTRFS_STRIPE_LEN);
+                       goto new_group;
+               }
                block_group = btrfs_lookup_block_group(info, ins->objectid);
                if (block_group)
                        trans->block_group = block_group;