diff options
Diffstat (limited to 'block/sheepdog.c')
| -rw-r--r-- | block/sheepdog.c | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/block/sheepdog.c b/block/sheepdog.c index 08a09e9683..e7e58b782c 100644 --- a/block/sheepdog.c +++ b/block/sheepdog.c @@ -28,7 +28,6 @@ #define SD_OP_READ_OBJ 0x02 #define SD_OP_WRITE_OBJ 0x03 /* 0x04 is used internally by Sheepdog */ -#define SD_OP_DISCARD_OBJ 0x05 #define SD_OP_NEW_VDI 0x11 #define SD_OP_LOCK_VDI 0x12 @@ -861,10 +860,6 @@ static void coroutine_fn aio_read_response(void *opaque) rsp.result = SD_RES_SUCCESS; s->discard_supported = false; break; - case SD_RES_SUCCESS: - idx = data_oid_to_idx(aio_req->oid); - s->inode.data_vdi_id[idx] = 0; - break; default: break; } @@ -1179,7 +1174,13 @@ static void coroutine_fn add_aio_request(BDRVSheepdogState *s, AIOReq *aio_req, hdr.flags = SD_FLAG_CMD_WRITE | flags; break; case AIOCB_DISCARD_OBJ: - hdr.opcode = SD_OP_DISCARD_OBJ; + hdr.opcode = SD_OP_WRITE_OBJ; + hdr.flags = SD_FLAG_CMD_WRITE | flags; + s->inode.data_vdi_id[data_oid_to_idx(oid)] = 0; + offset = offsetof(SheepdogInode, + data_vdi_id[data_oid_to_idx(oid)]); + oid = vid_to_vdi_oid(s->inode.vdi_id); + wlen = datalen = sizeof(uint32_t); break; } @@ -2214,7 +2215,9 @@ static int coroutine_fn sd_co_rw_vector(void *p) } aio_req = alloc_aio_req(s, acb, oid, len, offset, flags, create, - old_oid, done); + old_oid, + acb->aiocb_type == AIOCB_DISCARD_OBJ ? + 0 : done); QLIST_INSERT_HEAD(&s->inflight_aio_head, aio_req, aio_siblings); add_aio_request(s, aio_req, acb->qiov->iov, acb->qiov->niov, @@ -2650,15 +2653,23 @@ static coroutine_fn int sd_co_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors) { SheepdogAIOCB *acb; - QEMUIOVector dummy; BDRVSheepdogState *s = bs->opaque; int ret; + QEMUIOVector discard_iov; + struct iovec iov; + uint32_t zero = 0; if (!s->discard_supported) { return 0; } - acb = sd_aio_setup(bs, &dummy, sector_num, nb_sectors); + memset(&discard_iov, 0, sizeof(discard_iov)); + memset(&iov, 0, sizeof(iov)); + iov.iov_base = &zero; + iov.iov_len = sizeof(zero); + discard_iov.iov = &iov; + discard_iov.niov = 1; + acb = sd_aio_setup(bs, &discard_iov, sector_num, nb_sectors); acb->aiocb_type = AIOCB_DISCARD_OBJ; acb->aio_done_func = sd_finish_aiocb; |