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| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2010-05-14 19:16:41 +0200 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2010-05-18 02:03:05 +0200 |
| commit | a1c88d0d7aa2ef427f78834c9a3b0a673a19dca6 (patch) | |
| tree | be62930616401a30e3d4784a109c001323d4470a | |
| parent | bb3d000cb99aa0924b78c1ae5f5943484527868a (diff) | |
| download | talos-obmc-linux-a1c88d0d7aa2ef427f78834c9a3b0a673a19dca6.tar.gz talos-obmc-linux-a1c88d0d7aa2ef427f78834c9a3b0a673a19dca6.zip | |
drbd: always use_bmbv, ignore setting
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>
| -rw-r--r-- | drivers/block/drbd/drbd_nl.c | 3 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_receiver.c | 6 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_req.c | 2 |
3 files changed, 6 insertions, 5 deletions
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index 28ef76bd5230..f20336bc59c8 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -704,9 +704,6 @@ void drbd_setup_queue_param(struct drbd_conf *mdev, unsigned int max_seg_s) __mu struct request_queue * const b = mdev->ldev->backing_bdev->bd_disk->queue; int max_segments = mdev->ldev->dc.max_bio_bvecs; - if (b->merge_bvec_fn && !mdev->ldev->dc.use_bmbv) - max_seg_s = PAGE_SIZE; - max_seg_s = min(queue_max_sectors(b) * queue_logical_block_size(b), max_seg_s); blk_queue_max_hw_sectors(q, max_seg_s >> 9); diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c index 388a3e8bb0d0..a04ec01ab3ce 100644 --- a/drivers/block/drbd/drbd_receiver.c +++ b/drivers/block/drbd/drbd_receiver.c @@ -3011,7 +3011,11 @@ static int receive_sizes(struct drbd_conf *mdev, struct p_header *h) ldsc = 1; } - max_seg_s = be32_to_cpu(p->max_segment_size); + if (mdev->agreed_pro_version < 94) + max_seg_s = be32_to_cpu(p->max_segment_size); + else /* drbd 8.3.8 onwards */ + max_seg_s = DRBD_MAX_SEGMENT_SIZE; + if (max_seg_s != queue_max_segment_size(mdev->rq_queue)) drbd_setup_queue_param(mdev, max_seg_s); diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c index d8d9bbfca3b8..343e0e6dd532 100644 --- a/drivers/block/drbd/drbd_req.c +++ b/drivers/block/drbd/drbd_req.c @@ -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); } |
