Messages in this thread | | | Date | Fri, 21 Dec 2001 17:50:07 +0100 | From | Jens Axboe <> | Subject | Re: Poor performance during disk writes |
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On Thu, Dec 20 2001, Andrew Morton wrote: > --- linux-2.4.17-pre6/drivers/block/ll_rw_blk.c Mon Nov 5 21:01:11 2001 > +++ linux-akpm/drivers/block/ll_rw_blk.c Sat Dec 8 11:10:36 2001 > @@ -690,7 +690,8 @@ again: > } else if (q->head_active && !q->plugged) > head = head->next; > > - el_ret = elevator->elevator_merge_fn(q, &req, head, bh, rw,max_sectors); > + el_ret = elevator->elevator_merge_fn(q, &req, head, bh, > + rw, max_sectors, elevator->max_bomb_segments);
merge function can just grab max_bomb_segments ala
int mbs = q->elevator.max_bomb_segments
so no need to modify the merge functions.
-- Jens Axboe
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