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hw/virtio-blk: add a constant for max number of merged requests

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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>
This commit is contained in:
Peter Lieven 2015-02-02 14:52:19 +01:00 • committed by Kevin Wolf
parent f4564d53c6
commit d901f3c457
2 changed files with 4 additions and 2 deletions
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4
include/hw/virtio/virtio-blk.h
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@ -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;