Use vectored aiocb storage to store vector translation state (Avi Kivity)
Now that we have a dedicated acb pool for vector translation acbs, we can store the vector translation state in the acbs instead of in an external structure. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6873 c046a42c-6fe2-441c-8c8c-71466251a162
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29
block.c
29
block.c
@ -1255,31 +1255,32 @@ char *bdrv_snapshot_dump(char *buf, int buf_size, QEMUSnapshotInfo *sn)
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/**************************************************************/
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/* async I/Os */
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typedef struct VectorTranslationState {
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typedef struct VectorTranslationAIOCB {
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BlockDriverAIOCB common;
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QEMUIOVector *iov;
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uint8_t *bounce;
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int is_write;
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BlockDriverAIOCB *aiocb;
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BlockDriverAIOCB *this_aiocb;
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} VectorTranslationState;
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} VectorTranslationAIOCB;
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static void bdrv_aio_cancel_vector(BlockDriverAIOCB *acb)
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static void bdrv_aio_cancel_vector(BlockDriverAIOCB *_acb)
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{
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VectorTranslationState *s = acb->opaque;
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VectorTranslationAIOCB *acb
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= container_of(_acb, VectorTranslationAIOCB, common);
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bdrv_aio_cancel(s->aiocb);
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bdrv_aio_cancel(acb->aiocb);
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}
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static void bdrv_aio_rw_vector_cb(void *opaque, int ret)
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{
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VectorTranslationState *s = opaque;
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VectorTranslationAIOCB *s = (VectorTranslationAIOCB *)opaque;
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if (!s->is_write) {
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qemu_iovec_from_buffer(s->iov, s->bounce, s->iov->size);
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}
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qemu_vfree(s->bounce);
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s->this_aiocb->cb(s->this_aiocb->opaque, ret);
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qemu_aio_release(s->this_aiocb);
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s->common.cb(s->common.opaque, ret);
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qemu_aio_release(s);
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}
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static BlockDriverAIOCB *bdrv_aio_rw_vector(BlockDriverState *bs,
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@ -1291,11 +1292,9 @@ static BlockDriverAIOCB *bdrv_aio_rw_vector(BlockDriverState *bs,
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int is_write)
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{
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VectorTranslationState *s = qemu_mallocz(sizeof(*s));
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BlockDriverAIOCB *aiocb = qemu_aio_get_pool(&vectored_aio_pool, bs,
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cb, opaque);
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VectorTranslationAIOCB *s = qemu_aio_get_pool(&vectored_aio_pool, bs,
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cb, opaque);
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s->this_aiocb = aiocb;
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s->iov = iov;
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s->bounce = qemu_memalign(512, nb_sectors * 512);
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s->is_write = is_write;
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@ -1307,7 +1306,7 @@ static BlockDriverAIOCB *bdrv_aio_rw_vector(BlockDriverState *bs,
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s->aiocb = bdrv_aio_read(bs, sector_num, s->bounce, nb_sectors,
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bdrv_aio_rw_vector_cb, s);
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}
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return aiocb;
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return &s->common;
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}
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BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num,
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@ -1483,7 +1482,7 @@ static int bdrv_write_em(BlockDriverState *bs, int64_t sector_num,
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void bdrv_init(void)
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{
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aio_pool_init(&vectored_aio_pool, sizeof(BlockDriverAIOCB),
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aio_pool_init(&vectored_aio_pool, sizeof(VectorTranslationAIOCB),
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bdrv_aio_cancel_vector);
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bdrv_register(&bdrv_raw);
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