sheepdog: do not use BlockAIOCB
Sheepdog's AIOCB are completely internal entities for a group of requests and do not need dynamic allocation. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 20161129113245.32724-4-pbonzini@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
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e80ab33dc0
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28ddd08cd6
@ -306,6 +306,7 @@ static inline size_t count_data_objs(const struct SheepdogInode *inode)
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} while (0)
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typedef struct SheepdogAIOCB SheepdogAIOCB;
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typedef struct BDRVSheepdogState BDRVSheepdogState;
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typedef struct AIOReq {
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SheepdogAIOCB *aiocb;
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@ -334,7 +335,7 @@ enum AIOCBState {
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|| y->max_affect_data_idx < x->min_affect_data_idx))
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struct SheepdogAIOCB {
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BlockAIOCB common;
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BDRVSheepdogState *s;
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QEMUIOVector *qiov;
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@ -362,7 +363,7 @@ struct SheepdogAIOCB {
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QLIST_ENTRY(SheepdogAIOCB) aiocb_siblings;
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};
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typedef struct BDRVSheepdogState {
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struct BDRVSheepdogState {
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BlockDriverState *bs;
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AioContext *aio_context;
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@ -389,7 +390,7 @@ typedef struct BDRVSheepdogState {
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CoQueue overlapping_queue;
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QLIST_HEAD(inflight_aiocb_head, SheepdogAIOCB) inflight_aiocb_head;
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} BDRVSheepdogState;
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};
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typedef struct BDRVSheepdogReopenState {
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int fd;
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@ -488,20 +489,15 @@ static inline void free_aio_req(BDRVSheepdogState *s, AIOReq *aio_req)
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acb->nr_pending--;
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}
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static const AIOCBInfo sd_aiocb_info = {
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.aiocb_size = sizeof(SheepdogAIOCB),
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};
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static SheepdogAIOCB *sd_aio_setup(BlockDriverState *bs, QEMUIOVector *qiov,
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int64_t sector_num, int nb_sectors)
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static void sd_aio_setup(SheepdogAIOCB *acb, BDRVSheepdogState *s,
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QEMUIOVector *qiov, int64_t sector_num, int nb_sectors,
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int type)
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{
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SheepdogAIOCB *acb;
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uint32_t object_size;
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BDRVSheepdogState *s = bs->opaque;
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object_size = (UINT32_C(1) << s->inode.block_size_shift);
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acb = qemu_aio_get(&sd_aiocb_info, bs, NULL, NULL);
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acb->s = s;
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acb->qiov = qiov;
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@ -518,8 +514,7 @@ static SheepdogAIOCB *sd_aio_setup(BlockDriverState *bs, QEMUIOVector *qiov,
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acb->min_dirty_data_idx = UINT32_MAX;
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acb->max_dirty_data_idx = 0;
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return acb;
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acb->aiocb_type = type;
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}
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/* Return -EIO in case of error, file descriptor on success */
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@ -1967,7 +1962,7 @@ static int sd_truncate(BlockDriverState *bs, int64_t offset)
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*/
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static void coroutine_fn sd_write_done(SheepdogAIOCB *acb)
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{
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BDRVSheepdogState *s = acb->common.bs->opaque;
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BDRVSheepdogState *s = acb->s;
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struct iovec iov;
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AIOReq *aio_req;
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uint32_t offset, data_len, mn, mx;
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@ -2105,16 +2100,15 @@ out:
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* Returns 1 when we need to wait a response, 0 when there is no sent
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* request and -errno in error cases.
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*/
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static void coroutine_fn sd_co_rw_vector(void *p)
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static void coroutine_fn sd_co_rw_vector(SheepdogAIOCB *acb)
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{
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SheepdogAIOCB *acb = p;
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int ret = 0;
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unsigned long len, done = 0, total = acb->nb_sectors * BDRV_SECTOR_SIZE;
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unsigned long idx;
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uint32_t object_size;
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uint64_t oid;
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uint64_t offset;
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BDRVSheepdogState *s = acb->common.bs->opaque;
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BDRVSheepdogState *s = acb->s;
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SheepdogInode *inode = &s->inode;
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AIOReq *aio_req;
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@ -2222,7 +2216,7 @@ static bool check_overlapping_aiocb(BDRVSheepdogState *s, SheepdogAIOCB *aiocb)
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static coroutine_fn int sd_co_writev(BlockDriverState *bs, int64_t sector_num,
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int nb_sectors, QEMUIOVector *qiov)
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{
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SheepdogAIOCB *acb;
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SheepdogAIOCB acb;
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int ret;
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int64_t offset = (sector_num + nb_sectors) * BDRV_SECTOR_SIZE;
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BDRVSheepdogState *s = bs->opaque;
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@ -2234,76 +2228,65 @@ static coroutine_fn int sd_co_writev(BlockDriverState *bs, int64_t sector_num,
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}
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}
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acb = sd_aio_setup(bs, qiov, sector_num, nb_sectors);
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acb->aiocb_type = AIOCB_WRITE_UDATA;
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sd_aio_setup(&acb, s, qiov, sector_num, nb_sectors, AIOCB_WRITE_UDATA);
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retry:
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if (check_overlapping_aiocb(s, acb)) {
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if (check_overlapping_aiocb(s, &acb)) {
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qemu_co_queue_wait(&s->overlapping_queue);
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goto retry;
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}
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sd_co_rw_vector(acb);
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sd_write_done(acb);
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sd_co_rw_vector(&acb);
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sd_write_done(&acb);
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QLIST_REMOVE(acb, aiocb_siblings);
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QLIST_REMOVE(&acb, aiocb_siblings);
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qemu_co_queue_restart_all(&s->overlapping_queue);
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ret = acb->ret;
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qemu_aio_unref(acb);
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return ret;
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return acb.ret;
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}
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static coroutine_fn int sd_co_readv(BlockDriverState *bs, int64_t sector_num,
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int nb_sectors, QEMUIOVector *qiov)
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{
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SheepdogAIOCB *acb;
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int ret;
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SheepdogAIOCB acb;
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BDRVSheepdogState *s = bs->opaque;
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acb = sd_aio_setup(bs, qiov, sector_num, nb_sectors);
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acb->aiocb_type = AIOCB_READ_UDATA;
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sd_aio_setup(&acb, s, qiov, sector_num, nb_sectors, AIOCB_READ_UDATA);
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retry:
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if (check_overlapping_aiocb(s, acb)) {
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if (check_overlapping_aiocb(s, &acb)) {
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qemu_co_queue_wait(&s->overlapping_queue);
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goto retry;
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}
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sd_co_rw_vector(acb);
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sd_co_rw_vector(&acb);
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QLIST_REMOVE(acb, aiocb_siblings);
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QLIST_REMOVE(&acb, aiocb_siblings);
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qemu_co_queue_restart_all(&s->overlapping_queue);
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ret = acb->ret;
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qemu_aio_unref(acb);
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return ret;
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return acb.ret;
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}
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static int coroutine_fn sd_co_flush_to_disk(BlockDriverState *bs)
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{
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BDRVSheepdogState *s = bs->opaque;
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SheepdogAIOCB *acb;
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int ret;
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SheepdogAIOCB acb;
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AIOReq *aio_req;
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if (s->cache_flags != SD_FLAG_CMD_CACHE) {
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return 0;
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}
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acb = sd_aio_setup(bs, NULL, 0, 0);
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acb->aiocb_type = AIOCB_FLUSH_CACHE;
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sd_aio_setup(&acb, s, NULL, 0, 0, AIOCB_FLUSH_CACHE);
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acb->nr_pending++;
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aio_req = alloc_aio_req(s, acb, vid_to_vdi_oid(s->inode.vdi_id),
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acb.nr_pending++;
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aio_req = alloc_aio_req(s, &acb, vid_to_vdi_oid(s->inode.vdi_id),
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0, 0, 0, false, 0, 0);
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QLIST_INSERT_HEAD(&s->inflight_aio_head, aio_req, aio_siblings);
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add_aio_request(s, aio_req, NULL, 0, acb->aiocb_type);
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add_aio_request(s, aio_req, NULL, 0, acb.aiocb_type);
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if (--acb->nr_pending) {
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if (--acb.nr_pending) {
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qemu_coroutine_yield();
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}
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ret = acb->ret;
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qemu_aio_unref(acb);
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return ret;
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return acb.ret;
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}
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static int sd_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info)
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@ -2737,9 +2720,8 @@ static int sd_load_vmstate(BlockDriverState *bs, QEMUIOVector *qiov,
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static coroutine_fn int sd_co_pdiscard(BlockDriverState *bs, int64_t offset,
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int count)
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{
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SheepdogAIOCB *acb;
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SheepdogAIOCB acb;
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BDRVSheepdogState *s = bs->opaque;
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int ret;
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QEMUIOVector discard_iov;
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struct iovec iov;
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uint32_t zero = 0;
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@ -2757,23 +2739,20 @@ static coroutine_fn int sd_co_pdiscard(BlockDriverState *bs, int64_t offset,
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if (!QEMU_IS_ALIGNED(offset | count, BDRV_SECTOR_SIZE)) {
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return -ENOTSUP;
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}
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acb = sd_aio_setup(bs, &discard_iov, offset >> BDRV_SECTOR_BITS,
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count >> BDRV_SECTOR_BITS);
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acb->aiocb_type = AIOCB_DISCARD_OBJ;
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sd_aio_setup(&acb, s, &discard_iov, offset >> BDRV_SECTOR_BITS,
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count >> BDRV_SECTOR_BITS, AIOCB_DISCARD_OBJ);
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retry:
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if (check_overlapping_aiocb(s, acb)) {
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if (check_overlapping_aiocb(s, &acb)) {
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qemu_co_queue_wait(&s->overlapping_queue);
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goto retry;
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}
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sd_co_rw_vector(acb);
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sd_co_rw_vector(&acb);
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QLIST_REMOVE(acb, aiocb_siblings);
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QLIST_REMOVE(&acb, aiocb_siblings);
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qemu_co_queue_restart_all(&s->overlapping_queue);
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ret = acb->ret;
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qemu_aio_unref(acb);
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return ret;
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return acb.ret;
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}
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static coroutine_fn int64_t
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