Hi, On Sun, Oct 04, 2015 at 12:28:39AM +0800, Zhao Lei wrote: > diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c > index 79a5bd9..c05b975 100644 > --- a/fs/btrfs/extent-tree.c > +++ b/fs/btrfs/extent-tree.c > @@ -10010,8 +10010,18 @@ void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info) > block_group = list_first_entry(&fs_info->unused_bgs, > struct btrfs_block_group_cache, > bg_list); > - space_info = block_group->space_info; > list_del_init(&block_group->bg_list); > + > + space_info = block_group->space_info; > + > + down_read(&space_info->groups_sem); Thanks for reworking this, are there other patches that I'm missing that are meant to go in before this one? The down_read() this patch adds is inside a spinlock(). -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
