On Mon, Jan 13, 2025 at 04:22:51PM +0800, Ming Lei wrote: > On Sun, Jan 12, 2025 at 09:49:39PM -0800, Christoph Hellwig wrote: > > On Mon, Jan 13, 2025 at 10:24:26AM +0800, Ming Lei wrote: > > > If vfs_flush() is called with queue frozen, the queue freeze lock may be > > > connected with FS internal lock > > > > What "FS internal lock" ? > > Please see the report: > > https://lore.kernel.org/linux-block/359BC288-B0B1-4815-9F01-3A349B12E816@xxxxxxxxxxxxxx/T/#u Please state the locks. Nothing fs internal here, that report is about i_rwsem. And a false positive because it is about ordering of i_rwsem on the upper file system sitting on the loop device vs the one on the lower file systems sitting below the block device. These obviously can't deadlock, we just need to tell lockdep about that fact.
