On 11/19/20 6:55 PM, Damien Le Moal wrote: > Jens, > > This series provides fixes and improvements for null_blk. > > The first two patches are bug fixes which likely should go into 5.10. > The first patch fixes a problem with zone initialization when the > device capacity is not a multiple of the zone size and the second > patch fixes zone append handling. > > The following patches are improvements and cleanups: > * Patch 3 makes sure that the device max_sectors limit is aligned to the > block size. > * Patch 4 improves zone locking overall, and especially the memory > backing disabled case by introducing a spinlock array to implement a > per zone lock in place of a global lock. With this patch, write > performance remains mostly unchanged, but read performance with a > multi-queue setup more than double from 1.3 MIOPS to 3.3 MIOPS (4K > random reads to zones with fio zonemode=zbd). > * Patch 5 improves implicit zone close > * Patch 6 and 7 cleanup discard handling code and use that code to free > the memory backing a zone that is being reset. > * Patch 8 adds the max_sectors configuration option to allow changing > the max_sectors/max_hw_sectors of the device. > * Finally, patch 9 moves nullblk into its own directory under > drivers/block/null_blk/ Applied, thanks. -- Jens Axboe
