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| author | Peter Lieven <pl@kamp.de> | 2015-02-02 14:52:19 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2015-02-06 17:24:21 +0100 |
| commit | d901f3c457ade0b4934427c0e8608dea31610720 (patch) | |
| tree | 0d78922a6351ac368082c527c17277f4de2853ac | |
| parent | f4564d53c6952c61fb3ed8ee17a6e0f2f6bf0857 (diff) | |
| download | qemu-d901f3c457ade0b4934427c0e8608dea31610720.tar.gz qemu-d901f3c457ade0b4934427c0e8608dea31610720.tar.bz2 qemu-d901f3c457ade0b4934427c0e8608dea31610720.zip | |
hw/virtio-blk: add a constant for max number of merged requests
As it was not obvious (at least for me) where the 32 comes from;
add a constant for it.
Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | hw/block/virtio-blk.c | 2 | ||||
| -rw-r--r-- | include/hw/virtio/virtio-blk.h | 4 |
2 files changed, 4 insertions, 2 deletions
diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c index 4032fcae27..e04adb8f16 100644 --- a/hw/block/virtio-blk.c +++ b/hw/block/virtio-blk.c @@ -360,7 +360,7 @@ static void virtio_blk_handle_write(VirtIOBlockReq *req, MultiReqBuffer *mrb) block_acct_start(blk_get_stats(req->dev->blk), &req->acct, req->qiov.size, BLOCK_ACCT_WRITE); - if (mrb->num_writes == 32) { + if (mrb->num_writes == VIRTIO_BLK_MAX_MERGE_REQS) { virtio_submit_multiwrite(req->dev->blk, mrb); } diff --git a/include/hw/virtio/virtio-blk.h b/include/hw/virtio/virtio-blk.h index 4652b70b5d..6ef3fa57cf 100644 --- a/include/hw/virtio/virtio-blk.h +++ b/include/hw/virtio/virtio-blk.h @@ -134,8 +134,10 @@ typedef struct VirtIOBlock { struct VirtIOBlockDataPlane *dataplane; } VirtIOBlock; +#define VIRTIO_BLK_MAX_MERGE_REQS 32 + typedef struct MultiReqBuffer { - BlockRequest blkreq[32]; + BlockRequest blkreq[VIRTIO_BLK_MAX_MERGE_REQS]; unsigned int num_writes; } MultiReqBuffer; |