On Thu, Aug 24, 2017 at 09:53:59AM -0700, Song Liu wrote: > In raid5, there are scenarios where some ios are deferred to a later > time, and some IO need a flush to complete. To make sure we make > progress with these IOs, we need to call the following functions: > > flush_deferred_bios(conf); > r5l_flush_stripe_to_raid(conf->log); > > Both of these functions are called in raid5d(), but missing in > raid5_do_work(). As a result, these functions are not called > when multi-threading (group_thread_cnt > 0) is enabled. This patch > adds calls to these function to raid5_do_work(). > > Note for stable branches: > > r5l_flush_stripe_to_raid(conf->log) is need for 4.4+ > flush_deferred_bios(conf) is only needed for 4.11+ > > Cc: stable@xxxxxxxxxxxxxxx (4.4+) > Signed-off-by: Song Liu <songliubraving@xxxxxx> Applied, thanks! > --- > drivers/md/raid5.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c > index f64ff32..6af57c6 100644 > --- a/drivers/md/raid5.c > +++ b/drivers/md/raid5.c > @@ -6226,6 +6226,10 @@ static void raid5_do_work(struct work_struct *work) > > spin_unlock_irq(&conf->device_lock); > > + flush_deferred_bios(conf); > + > + r5l_flush_stripe_to_raid(conf->log); > + > async_tx_issue_pending_all(); > blk_finish_plug(&plug); > > -- > 2.9.5 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
