On Thu, Jun 26, 2014 at 11:08:16AM +0800, Wang Shilong wrote: > Balance recovery is called when RW mounting or remounting from > RO to RW, it is called to finish roots merging. > > When doing balance recovery, relocation root's corresponding > fs root(whose root refs is 0) might be destroyed by cleaner > thread, this will make btrfs fail to mount. > > Fix this problem by holding @cleaner_mutex when doing balance > recovery. > > Signed-off-by: Wang Shilong <wangsl.fnst@xxxxxxxxxxxxxx> I don't pretend to understand all the dark corners of relocation, but this looks as a correct fix to me. Relocation and cleaner are mutually exclusive in the normal case. Reviewed-by: David Sterba <dsterba@xxxxxxx> -- 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
