diff options
Diffstat (limited to 'block/qed.c')
-rw-r--r-- | block/qed.c | 82 |
1 files changed, 28 insertions, 54 deletions
diff --git a/block/qed.c b/block/qed.c index c6ff3ab015..72cf2f58ab 100644 --- a/block/qed.c +++ b/block/qed.c @@ -638,7 +638,9 @@ out: return ret; } -static int bdrv_qed_create(const char *filename, QemuOpts *opts, Error **errp) +static int coroutine_fn bdrv_qed_co_create_opts(const char *filename, + QemuOpts *opts, + Error **errp) { uint64_t image_size = 0; uint32_t cluster_size = QED_DEFAULT_CLUSTER_SIZE; @@ -688,74 +690,46 @@ finish: return ret; } -typedef struct { - BlockDriverState *bs; - Coroutine *co; - uint64_t pos; - int64_t status; - int *pnum; - BlockDriverState **file; -} QEDIsAllocatedCB; - -/* Called with table_lock held. */ -static void qed_is_allocated_cb(void *opaque, int ret, uint64_t offset, size_t len) +static int coroutine_fn bdrv_qed_co_block_status(BlockDriverState *bs, + bool want_zero, + int64_t pos, int64_t bytes, + int64_t *pnum, int64_t *map, + BlockDriverState **file) { - QEDIsAllocatedCB *cb = opaque; - BDRVQEDState *s = cb->bs->opaque; - *cb->pnum = len / BDRV_SECTOR_SIZE; + BDRVQEDState *s = bs->opaque; + size_t len = MIN(bytes, SIZE_MAX); + int status; + QEDRequest request = { .l2_table = NULL }; + uint64_t offset; + int ret; + + qemu_co_mutex_lock(&s->table_lock); + ret = qed_find_cluster(s, &request, pos, &len, &offset); + + *pnum = len; switch (ret) { case QED_CLUSTER_FOUND: - offset |= qed_offset_into_cluster(s, cb->pos); - cb->status = BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID | offset; - *cb->file = cb->bs->file->bs; + *map = offset | qed_offset_into_cluster(s, pos); + status = BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID; + *file = bs->file->bs; break; case QED_CLUSTER_ZERO: - cb->status = BDRV_BLOCK_ZERO; + status = BDRV_BLOCK_ZERO; break; case QED_CLUSTER_L2: case QED_CLUSTER_L1: - cb->status = 0; + status = 0; break; default: assert(ret < 0); - cb->status = ret; + status = ret; break; } - if (cb->co) { - aio_co_wake(cb->co); - } -} - -static int64_t coroutine_fn bdrv_qed_co_get_block_status(BlockDriverState *bs, - int64_t sector_num, - int nb_sectors, int *pnum, - BlockDriverState **file) -{ - BDRVQEDState *s = bs->opaque; - size_t len = (size_t)nb_sectors * BDRV_SECTOR_SIZE; - QEDIsAllocatedCB cb = { - .bs = bs, - .pos = (uint64_t)sector_num * BDRV_SECTOR_SIZE, - .status = BDRV_BLOCK_OFFSET_MASK, - .pnum = pnum, - .file = file, - }; - QEDRequest request = { .l2_table = NULL }; - uint64_t offset; - int ret; - - qemu_co_mutex_lock(&s->table_lock); - ret = qed_find_cluster(s, &request, cb.pos, &len, &offset); - qed_is_allocated_cb(&cb, ret, offset, len); - - /* The callback was invoked immediately */ - assert(cb.status != BDRV_BLOCK_OFFSET_MASK); - qed_unref_l2_cache_entry(request.l2_table); qemu_co_mutex_unlock(&s->table_lock); - return cb.status; + return status; } static BDRVQEDState *acb_to_s(QEDAIOCB *acb) @@ -1592,9 +1566,9 @@ static BlockDriver bdrv_qed = { .bdrv_close = bdrv_qed_close, .bdrv_reopen_prepare = bdrv_qed_reopen_prepare, .bdrv_child_perm = bdrv_format_default_perms, - .bdrv_create = bdrv_qed_create, + .bdrv_co_create_opts = bdrv_qed_co_create_opts, .bdrv_has_zero_init = bdrv_has_zero_init_1, - .bdrv_co_get_block_status = bdrv_qed_co_get_block_status, + .bdrv_co_block_status = bdrv_qed_co_block_status, .bdrv_co_readv = bdrv_qed_co_readv, .bdrv_co_writev = bdrv_qed_co_writev, .bdrv_co_pwrite_zeroes = bdrv_qed_co_pwrite_zeroes, |