On Wed, Nov 04, 2015 at 10:18:41AM +0100, Jan Kara wrote: > Currently blkdev_issue_discard() doesn't check that submitted discard > request matches granularity required by the underlying device. > Submitting such requests to the device can have unexpected consequences > (e.g. brd driver just discards more / less data depending on how exactly > the request is aligned). So test that submitted discard request has the > granularity required by the driver. How is this going to work with stacked drivers? I think brd needs to be fixed to take care of the granularity itself, just like we did for request based drivers. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html