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drbd: always use_bmbv, ignore setting

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Now that the peer may handle multi-bio EEs,
we can ignore the peer's limit,
and concentrate on the limits of the local IO stack.

This is safe accross drbd protocol versions,
as our queue_max_sectors() will be adjusted accordingly.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Lars Ellenberg
2010-05-14 19:16:41 +02:00
committed by Philipp Reisner
parent bb3d000cb9
commit a1c88d0d7a
3 changed files with 6 additions and 5 deletions
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drivers/block/drbd/drbd_req.c
+1 -1
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@@ -1110,7 +1110,7 @@ int drbd_merge_bvec(struct request_queue *q, struct bvec_merge_data *bvm, struct
} else if (limit && get_ldev(mdev)) {
struct request_queue * const b =
mdev->ldev->backing_bdev->bd_disk->queue;
if (b->merge_bvec_fn && mdev->ldev->dc.use_bmbv) {
if (b->merge_bvec_fn) {
backing_limit = b->merge_bvec_fn(b, bvm, bvec);
limit = min(limit, backing_limit);
}