We forget to protect the modified_extents list, fix it. Signed-off-by: Miao Xie <mi...@cn.fujitsu.com> --- fs/btrfs/tree-log.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index cbb544e..f7e9387 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -3525,8 +3525,10 @@ next_slot: struct extent_map_tree *tree = &BTRFS_I(inode)->extent_tree; struct extent_map *em, *n; + write_lock(&tree->lock); list_for_each_entry_safe(em, n, &tree->modified_extents, list) list_del_init(&em->list); + write_unlock(&tree->lock); } if (inode_only == LOG_INODE_ALL && S_ISDIR(inode->i_mode)) { -- 1.7.6.5 -- 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