diff options
| -rw-r--r-- | block/qcow.c | 52 | ||||
| -rw-r--r-- | block/qcow2.c | 38 |
2 files changed, 27 insertions, 63 deletions
diff --git a/block/qcow.c b/block/qcow.c index 8f2bdfda51..1e06dc92a5 100644 --- a/block/qcow.c +++ b/block/qcow.c @@ -505,28 +505,12 @@ typedef struct QCowAIOCB { BlockDriverAIOCB *hd_aiocb; } QCowAIOCB; -static void qcow_aio_cancel(BlockDriverAIOCB *blockacb) -{ - QCowAIOCB *acb = container_of(blockacb, QCowAIOCB, common); - if (acb->hd_aiocb) - bdrv_aio_cancel(acb->hd_aiocb); - qemu_aio_release(acb); -} - -static AIOPool qcow_aio_pool = { - .aiocb_size = sizeof(QCowAIOCB), - .cancel = qcow_aio_cancel, -}; - static QCowAIOCB *qcow_aio_setup(BlockDriverState *bs, int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, - int is_write) + int is_write, QCowAIOCB *acb) { - QCowAIOCB *acb; - - acb = qemu_aio_get(&qcow_aio_pool, bs, NULL, NULL); - if (!acb) - return NULL; + memset(acb, 0, sizeof(*acb)); + acb->common.bs = bs; acb->hd_aiocb = NULL; acb->sector_num = sector_num; acb->qiov = qiov; @@ -545,9 +529,8 @@ static QCowAIOCB *qcow_aio_setup(BlockDriverState *bs, return acb; } -static int qcow_aio_read_cb(void *opaque) +static int qcow_aio_read_cb(QCowAIOCB *acb) { - QCowAIOCB *acb = opaque; BlockDriverState *bs = acb->common.bs; BDRVQcowState *s = bs->opaque; int index_in_cluster; @@ -636,29 +619,27 @@ static int qcow_co_readv(BlockDriverState *bs, int64_t sector_num, int nb_sectors, QEMUIOVector *qiov) { BDRVQcowState *s = bs->opaque; - QCowAIOCB *acb; + QCowAIOCB acb; int ret; - acb = qcow_aio_setup(bs, sector_num, qiov, nb_sectors, 0); + qcow_aio_setup(bs, sector_num, qiov, nb_sectors, 0, &acb); qemu_co_mutex_lock(&s->lock); do { - ret = qcow_aio_read_cb(acb); + ret = qcow_aio_read_cb(&acb); } while (ret > 0); qemu_co_mutex_unlock(&s->lock); - if (acb->qiov->niov > 1) { - qemu_iovec_from_buffer(acb->qiov, acb->orig_buf, acb->qiov->size); - qemu_vfree(acb->orig_buf); + if (acb.qiov->niov > 1) { + qemu_iovec_from_buffer(acb.qiov, acb.orig_buf, acb.qiov->size); + qemu_vfree(acb.orig_buf); } - qemu_aio_release(acb); return ret; } -static int qcow_aio_write_cb(void *opaque) +static int qcow_aio_write_cb(QCowAIOCB *acb) { - QCowAIOCB *acb = opaque; BlockDriverState *bs = acb->common.bs; BDRVQcowState *s = bs->opaque; int index_in_cluster; @@ -716,23 +697,22 @@ static int qcow_co_writev(BlockDriverState *bs, int64_t sector_num, int nb_sectors, QEMUIOVector *qiov) { BDRVQcowState *s = bs->opaque; - QCowAIOCB *acb; + QCowAIOCB acb; int ret; s->cluster_cache_offset = -1; /* disable compressed cache */ - acb = qcow_aio_setup(bs, sector_num, qiov, nb_sectors, 1); + qcow_aio_setup(bs, sector_num, qiov, nb_sectors, 1, &acb); qemu_co_mutex_lock(&s->lock); do { - ret = qcow_aio_write_cb(acb); + ret = qcow_aio_write_cb(&acb); } while (ret > 0); qemu_co_mutex_unlock(&s->lock); - if (acb->qiov->niov > 1) { - qemu_vfree(acb->orig_buf); + if (acb.qiov->niov > 1) { + qemu_vfree(acb.orig_buf); } - qemu_aio_release(acb); return ret; } diff --git a/block/qcow2.c b/block/qcow2.c index 01ea2658b0..f4e3c06ad8 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -392,17 +392,6 @@ typedef struct QCowAIOCB { QLIST_ENTRY(QCowAIOCB) next_depend; } QCowAIOCB; -static void qcow2_aio_cancel(BlockDriverAIOCB *blockacb) -{ - QCowAIOCB *acb = container_of(blockacb, QCowAIOCB, common); - qemu_aio_release(acb); -} - -static AIOPool qcow2_aio_pool = { - .aiocb_size = sizeof(QCowAIOCB), - .cancel = qcow2_aio_cancel, -}; - /* * Returns 0 when the request is completed successfully, 1 when there is still * a part left to do and -errno in error cases. @@ -532,13 +521,10 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb) static QCowAIOCB *qcow2_aio_setup(BlockDriverState *bs, int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, BlockDriverCompletionFunc *cb, - void *opaque, int is_write) + void *opaque, int is_write, QCowAIOCB *acb) { - QCowAIOCB *acb; - - acb = qemu_aio_get(&qcow2_aio_pool, bs, cb, opaque); - if (!acb) - return NULL; + memset(acb, 0, sizeof(*acb)); + acb->common.bs = bs; acb->sector_num = sector_num; acb->qiov = qiov; acb->is_write = is_write; @@ -558,19 +544,18 @@ static int qcow2_co_readv(BlockDriverState *bs, int64_t sector_num, int nb_sectors, QEMUIOVector *qiov) { BDRVQcowState *s = bs->opaque; - QCowAIOCB *acb; + QCowAIOCB acb; int ret; - acb = qcow2_aio_setup(bs, sector_num, qiov, nb_sectors, NULL, NULL, 0); + qcow2_aio_setup(bs, sector_num, qiov, nb_sectors, NULL, NULL, 0, &acb); qemu_co_mutex_lock(&s->lock); do { - ret = qcow2_aio_read_cb(acb); + ret = qcow2_aio_read_cb(&acb); } while (ret > 0); qemu_co_mutex_unlock(&s->lock); - qemu_iovec_destroy(&acb->hd_qiov); - qemu_aio_release(acb); + qemu_iovec_destroy(&acb.hd_qiov); return ret; } @@ -674,20 +659,19 @@ static int qcow2_co_writev(BlockDriverState *bs, QEMUIOVector *qiov) { BDRVQcowState *s = bs->opaque; - QCowAIOCB *acb; + QCowAIOCB acb; int ret; - acb = qcow2_aio_setup(bs, sector_num, qiov, nb_sectors, NULL, NULL, 1); + qcow2_aio_setup(bs, sector_num, qiov, nb_sectors, NULL, NULL, 1, &acb); s->cluster_cache_offset = -1; /* disable compressed cache */ qemu_co_mutex_lock(&s->lock); do { - ret = qcow2_aio_write_cb(acb); + ret = qcow2_aio_write_cb(&acb); } while (ret > 0); qemu_co_mutex_unlock(&s->lock); - qemu_iovec_destroy(&acb->hd_qiov); - qemu_aio_release(acb); + qemu_iovec_destroy(&acb.hd_qiov); return ret; } |