diff options
| -rw-r--r-- | block/io.c | 25 | ||||
| -rw-r--r-- | include/block/block.h | 1 |
2 files changed, 26 insertions, 0 deletions
diff --git a/block/io.c b/block/io.c index fdf70807b0..57a2eeb512 100644 --- a/block/io.c +++ b/block/io.c @@ -1619,6 +1619,31 @@ int coroutine_fn bdrv_co_pwrite_zeroes(BdrvChild *child, int64_t offset, BDRV_REQ_ZERO_WRITE | flags); } +/* + * Flush ALL BDSes regardless of if they are reachable via a BlkBackend or not. + */ +int bdrv_flush_all(void) +{ + BdrvNextIterator it; + BlockDriverState *bs = NULL; + int result = 0; + + for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) { + AioContext *aio_context = bdrv_get_aio_context(bs); + int ret; + + aio_context_acquire(aio_context); + ret = bdrv_flush(bs); + if (ret < 0 && !result) { + result = ret; + } + aio_context_release(aio_context); + } + + return result; +} + + typedef struct BdrvCoGetBlockStatusData { BlockDriverState *bs; BlockDriverState *base; diff --git a/include/block/block.h b/include/block/block.h index e18233afe0..811b060f41 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -333,6 +333,7 @@ int bdrv_inactivate_all(void); /* Ensure contents are flushed to disk. */ int bdrv_flush(BlockDriverState *bs); int coroutine_fn bdrv_co_flush(BlockDriverState *bs); +int bdrv_flush_all(void); void bdrv_close_all(void); void bdrv_drain(BlockDriverState *bs); void coroutine_fn bdrv_co_drain(BlockDriverState *bs); |