Fixes the endianness bug in the fs_info::super_copy by using its
btrfs_set_super...() function to set values in the SB, as these
functions manage the endianness compatibility nicely.

Signed-off-by: Anand Jain <anand.j...@oracle.com>
---
v1->v2: Update change log. Update $Subject.
        Old:
        [PATCH] btrfs: use set functions to update latest refs to the SB
 fs/btrfs/transaction.c | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 04f07144b45c..9220f004001c 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1722,19 +1722,23 @@ static void update_super_roots(struct btrfs_fs_info 
*fs_info)
 
        super = fs_info->super_copy;
 
+       /* update latest btrfs_super_block::chunk_root refs */
        root_item = &fs_info->chunk_root->root_item;
-       super->chunk_root = root_item->bytenr;
-       super->chunk_root_generation = root_item->generation;
-       super->chunk_root_level = root_item->level;
+       btrfs_set_super_chunk_root(super, root_item->bytenr);
+       btrfs_set_super_chunk_root_generation(super, root_item->generation);
+       btrfs_set_super_chunk_root_level(super, root_item->level);
 
+       /* update latest btrfs_super_block::root refs */
        root_item = &fs_info->tree_root->root_item;
-       super->root = root_item->bytenr;
-       super->generation = root_item->generation;
-       super->root_level = root_item->level;
+       btrfs_set_super_root(super, root_item->bytenr);
+       btrfs_set_super_generation(super, root_item->generation);
+       btrfs_set_super_root_level(super, root_item->level);
+
        if (btrfs_test_opt(fs_info, SPACE_CACHE))
-               super->cache_generation = root_item->generation;
+               btrfs_set_super_cache_generation(super, root_item->generation);
        if (test_bit(BTRFS_FS_UPDATE_UUID_TREE_GEN, &fs_info->flags))
-               super->uuid_tree_generation = root_item->generation;
+               btrfs_set_super_uuid_tree_generation(super,
+                                                    root_item->generation);
 }
 
 int btrfs_transaction_in_commit(struct btrfs_fs_info *info)
-- 
2.15.0

--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Reply via email to