lightnvm: pblk: kick writer on write recovery path

In case of write recovery path, there is a chance that writer thread
is not active, kick immediately instead of waiting for timer.

Signed-off-by: Igor Konopko <igor.j.konopko@intel.com>
Reviewed-by: Javier González <javier@javigon.com>
Reviewed-by: Hans Holmberg <hans.holmberg@cnexlabs.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/lightnvm/pblk-write.c

@@ -228,6 +228,7 @@ static void pblk_submit_rec(struct work_struct *work)
 	mempool_free(recovery, &pblk->rec_pool);
 
 	atomic_dec(&pblk->inflight_io);
+	pblk_write_kick(pblk);
 }