diff options
Diffstat (limited to 'drivers/block/xen-blkback/common.h')
| -rw-r--r-- | drivers/block/xen-blkback/common.h | 26 |
1 files changed, 6 insertions, 20 deletions
diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h index dea61f6ab8cb..ecb35fe8ca8d 100644 --- a/drivers/block/xen-blkback/common.h +++ b/drivers/block/xen-blkback/common.h @@ -75,9 +75,8 @@ extern unsigned int xenblk_max_queues; struct blkif_common_request { char dummy; }; -struct blkif_common_response { - char dummy; -}; + +/* i386 protocol version */ struct blkif_x86_32_request_rw { uint8_t nr_segments; /* number of segments */ @@ -129,14 +128,6 @@ struct blkif_x86_32_request { } u; } __attribute__((__packed__)); -/* i386 protocol version */ -#pragma pack(push, 4) -struct blkif_x86_32_response { - uint64_t id; /* copied from request */ - uint8_t operation; /* copied from request */ - int16_t status; /* BLKIF_RSP_??? */ -}; -#pragma pack(pop) /* x86_64 protocol version */ struct blkif_x86_64_request_rw { @@ -193,18 +184,12 @@ struct blkif_x86_64_request { } u; } __attribute__((__packed__)); -struct blkif_x86_64_response { - uint64_t __attribute__((__aligned__(8))) id; - uint8_t operation; /* copied from request */ - int16_t status; /* BLKIF_RSP_??? */ -}; - DEFINE_RING_TYPES(blkif_common, struct blkif_common_request, - struct blkif_common_response); + struct blkif_response); DEFINE_RING_TYPES(blkif_x86_32, struct blkif_x86_32_request, - struct blkif_x86_32_response); + struct blkif_response __packed); DEFINE_RING_TYPES(blkif_x86_64, struct blkif_x86_64_request, - struct blkif_x86_64_response); + struct blkif_response); union blkif_back_rings { struct blkif_back_ring native; @@ -281,6 +266,7 @@ struct xen_blkif_ring { wait_queue_head_t wq; atomic_t inflight; + bool active; /* One thread per blkif ring. */ struct task_struct *xenblkd; unsigned int waiting_reqs; |