On Thu, Mar 7, 2019 at 6:52 PM Guoqing Jiang <gqjiang@xxxxxxxx> wrote: > > > > On 3/8/19 2:26 AM, Song Liu wrote: > > > >> On Mar 6, 2019, at 11:46 PM, Dabrowski, Mariusz <mariusz.dabrowski@xxxxxxxxx> wrote: > >> > >> On 2/18/19 3:04 PM, Mariusz Dabrowski wrote: > >>> When the Partial Parity Log is enabled, circular buffer is used to store > >>> PPL data. Each write to RAID device causes overwrite of data in this buffer > >>> so some write_hint can be set to those request to help drives handle > >>> garbage collection. This patch adds new sysfs attribute which can be used > >>> to specify which write_hint should be assigned to PPL. > >>> > >>> Signed-off-by: Mariusz Dabrowski <mariusz.dabrowski@xxxxxxxxx> > >>> --- > >>> v2: moved ppl_write_hint releated stuff from raid5.c to raid5-ppl.c > >>> > >>> Documentation/admin-guide/md.rst | 3 ++ > >>> drivers/md/raid5-log.h | 1 + > >>> drivers/md/raid5-ppl.c | 63 ++++++++++++++++++++++++++++++++++++++++ > >>> drivers/md/raid5.c | 1 + > >>> 4 files changed, 68 insertions(+) > > Acked-by: Guoqing Jiang <gqjiang@xxxxxxxx> > > Thanks, > Guoqing Thanks Guoqing! Song
