diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/coroutines.h | 6 | ||||
| -rw-r--r-- | block/io.c | 212 |
2 files changed, 3 insertions, 215 deletions
diff --git a/block/coroutines.h b/block/coroutines.h index 9ce1730a09..c62b3a2697 100644 --- a/block/coroutines.h +++ b/block/coroutines.h @@ -34,7 +34,7 @@ int coroutine_fn bdrv_co_invalidate_cache(BlockDriverState *bs, Error **errp); int coroutine_fn bdrv_co_prwv(BdrvChild *child, int64_t offset, QEMUIOVector *qiov, bool is_write, BdrvRequestFlags flags); -int +int generated_co_wrapper bdrv_prwv(BdrvChild *child, int64_t offset, QEMUIOVector *qiov, bool is_write, BdrvRequestFlags flags); @@ -47,7 +47,7 @@ bdrv_co_common_block_status_above(BlockDriverState *bs, int64_t *pnum, int64_t *map, BlockDriverState **file); -int +int generated_co_wrapper bdrv_common_block_status_above(BlockDriverState *bs, BlockDriverState *base, bool want_zero, @@ -60,7 +60,7 @@ bdrv_common_block_status_above(BlockDriverState *bs, int coroutine_fn bdrv_co_rw_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos, bool is_read); -int +int generated_co_wrapper bdrv_rw_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos, bool is_read); diff --git a/block/io.c b/block/io.c index 55b3b7692c..2891303a8d 100644 --- a/block/io.c +++ b/block/io.c @@ -890,50 +890,6 @@ static int bdrv_check_byte_request(BlockDriverState *bs, int64_t offset, return 0; } -typedef int coroutine_fn BdrvRequestEntry(void *opaque); -typedef struct BdrvRunCo { - BdrvRequestEntry *entry; - void *opaque; - int ret; - bool done; - Coroutine *co; /* Coroutine, running bdrv_run_co_entry, for debugging */ -} BdrvRunCo; - -static void coroutine_fn bdrv_run_co_entry(void *opaque) -{ - BdrvRunCo *arg = opaque; - - arg->ret = arg->entry(arg->opaque); - arg->done = true; - aio_wait_kick(); -} - -static int bdrv_run_co(BlockDriverState *bs, BdrvRequestEntry *entry, - void *opaque) -{ - if (qemu_in_coroutine()) { - /* Fast-path if already in coroutine context */ - return entry(opaque); - } else { - BdrvRunCo s = { .entry = entry, .opaque = opaque }; - - s.co = qemu_coroutine_create(bdrv_run_co_entry, &s); - bdrv_coroutine_enter(bs, s.co); - - BDRV_POLL_WHILE(bs, !s.done); - - return s.ret; - } -} - -typedef struct RwCo { - BdrvChild *child; - int64_t offset; - QEMUIOVector *qiov; - bool is_write; - BdrvRequestFlags flags; -} RwCo; - int coroutine_fn bdrv_co_prwv(BdrvChild *child, int64_t offset, QEMUIOVector *qiov, bool is_write, BdrvRequestFlags flags) @@ -945,32 +901,6 @@ int coroutine_fn bdrv_co_prwv(BdrvChild *child, int64_t offset, } } -static int coroutine_fn bdrv_rw_co_entry(void *opaque) -{ - RwCo *rwco = opaque; - - return bdrv_co_prwv(rwco->child, rwco->offset, rwco->qiov, - rwco->is_write, rwco->flags); -} - -/* - * Process a vectored synchronous request using coroutines - */ -int bdrv_prwv(BdrvChild *child, int64_t offset, - QEMUIOVector *qiov, bool is_write, - BdrvRequestFlags flags) -{ - RwCo rwco = { - .child = child, - .offset = offset, - .qiov = qiov, - .is_write = is_write, - .flags = flags, - }; - - return bdrv_run_co(child->bs, bdrv_rw_co_entry, &rwco); -} - int bdrv_pwrite_zeroes(BdrvChild *child, int64_t offset, int bytes, BdrvRequestFlags flags) { @@ -2247,18 +2177,6 @@ int bdrv_flush_all(void) return result; } - -typedef struct BdrvCoBlockStatusData { - BlockDriverState *bs; - BlockDriverState *base; - bool want_zero; - int64_t offset; - int64_t bytes; - int64_t *pnum; - int64_t *map; - BlockDriverState **file; -} BdrvCoBlockStatusData; - /* * Returns the allocation status of the specified sectors. * Drivers not implementing the functionality are assumed to not support @@ -2494,43 +2412,6 @@ bdrv_co_common_block_status_above(BlockDriverState *bs, return ret; } -/* Coroutine wrapper for bdrv_block_status_above() */ -static int coroutine_fn bdrv_block_status_above_co_entry(void *opaque) -{ - BdrvCoBlockStatusData *data = opaque; - - return bdrv_co_common_block_status_above(data->bs, data->base, - data->want_zero, - data->offset, data->bytes, - data->pnum, data->map, data->file); -} - -/* - * Synchronous wrapper around bdrv_co_block_status_above(). - * - * See bdrv_co_block_status_above() for details. - */ -int bdrv_common_block_status_above(BlockDriverState *bs, - BlockDriverState *base, - bool want_zero, int64_t offset, - int64_t bytes, int64_t *pnum, - int64_t *map, - BlockDriverState **file) -{ - BdrvCoBlockStatusData data = { - .bs = bs, - .base = base, - .want_zero = want_zero, - .offset = offset, - .bytes = bytes, - .pnum = pnum, - .map = map, - .file = file, - }; - - return bdrv_run_co(bs, bdrv_block_status_above_co_entry, &data); -} - int bdrv_block_status_above(BlockDriverState *bs, BlockDriverState *base, int64_t offset, int64_t bytes, int64_t *pnum, int64_t *map, BlockDriverState **file) @@ -2624,13 +2505,6 @@ int bdrv_is_allocated_above(BlockDriverState *top, return 0; } -typedef struct BdrvVmstateCo { - BlockDriverState *bs; - QEMUIOVector *qiov; - int64_t pos; - bool is_read; -} BdrvVmstateCo; - int coroutine_fn bdrv_co_rw_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos, bool is_read) @@ -2657,26 +2531,6 @@ bdrv_co_rw_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos, return ret; } -static int coroutine_fn bdrv_co_rw_vmstate_entry(void *opaque) -{ - BdrvVmstateCo *co = opaque; - - return bdrv_co_rw_vmstate(co->bs, co->qiov, co->pos, co->is_read); -} - -int bdrv_rw_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos, - bool is_read) -{ - BdrvVmstateCo data = { - .bs = bs, - .qiov = qiov, - .pos = pos, - .is_read = is_read, - }; - - return bdrv_run_co(bs, bdrv_co_rw_vmstate_entry, &data); -} - int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf, int64_t pos, int size) { @@ -2752,11 +2606,6 @@ void bdrv_aio_cancel_async(BlockAIOCB *acb) /**************************************************************/ /* Coroutine block device emulation */ -static int coroutine_fn bdrv_flush_co_entry(void *opaque) -{ - return bdrv_co_flush(opaque); -} - int coroutine_fn bdrv_co_flush(BlockDriverState *bs) { BdrvChild *primary_child = bdrv_primary_child(bs); @@ -2880,24 +2729,6 @@ early_exit: return ret; } -int bdrv_flush(BlockDriverState *bs) -{ - return bdrv_run_co(bs, bdrv_flush_co_entry, bs); -} - -typedef struct DiscardCo { - BdrvChild *child; - int64_t offset; - int64_t bytes; -} DiscardCo; - -static int coroutine_fn bdrv_pdiscard_co_entry(void *opaque) -{ - DiscardCo *rwco = opaque; - - return bdrv_co_pdiscard(rwco->child, rwco->offset, rwco->bytes); -} - int coroutine_fn bdrv_co_pdiscard(BdrvChild *child, int64_t offset, int64_t bytes) { @@ -3012,17 +2843,6 @@ out: return ret; } -int bdrv_pdiscard(BdrvChild *child, int64_t offset, int64_t bytes) -{ - DiscardCo rwco = { - .child = child, - .offset = offset, - .bytes = bytes, - }; - - return bdrv_run_co(child->bs, bdrv_pdiscard_co_entry, &rwco); -} - int bdrv_co_ioctl(BlockDriverState *bs, int req, void *buf) { BlockDriver *drv = bs->drv; @@ -3424,35 +3244,3 @@ out: return ret; } - -typedef struct TruncateCo { - BdrvChild *child; - int64_t offset; - bool exact; - PreallocMode prealloc; - BdrvRequestFlags flags; - Error **errp; -} TruncateCo; - -static int coroutine_fn bdrv_truncate_co_entry(void *opaque) -{ - TruncateCo *tco = opaque; - - return bdrv_co_truncate(tco->child, tco->offset, tco->exact, - tco->prealloc, tco->flags, tco->errp); -} - -int bdrv_truncate(BdrvChild *child, int64_t offset, bool exact, - PreallocMode prealloc, BdrvRequestFlags flags, Error **errp) -{ - TruncateCo tco = { - .child = child, - .offset = offset, - .exact = exact, - .prealloc = prealloc, - .flags = flags, - .errp = errp, - }; - - return bdrv_run_co(child->bs, bdrv_truncate_co_entry, &tco); -} |