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| author | Kevin Wolf | 2016-04-12 15:15:49 +0200 |
|---|---|---|
| committer | Kevin Wolf | 2016-05-25 19:04:21 +0200 |
| commit | 03e35d820d18f23606b4cc821a36cda1f7936170 (patch) | |
| tree | a32227908a491609d7a0535ba847d4b2e31b23f7 /block | |
| parent | block: Make blk_co_preadv/pwritev() public (diff) | |
| download | qemu-03e35d820d18f23606b4cc821a36cda1f7936170.tar.gz qemu-03e35d820d18f23606b4cc821a36cda1f7936170.tar.xz qemu-03e35d820d18f23606b4cc821a36cda1f7936170.zip | |
stream: Use BlockBackend for I/O
This changes the streaming block job to use the job's BlockBackend for
performing the COR reads. job->bs isn't used by the streaming code any
more afterwards.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/io.c | 9 | ||||
| -rw-r--r-- | block/stream.c | 15 |
2 files changed, 9 insertions, 15 deletions
diff --git a/block/io.c b/block/io.c index 9bc1d45579..bc2eda29cd 100644 --- a/block/io.c +++ b/block/io.c @@ -1117,15 +1117,6 @@ int coroutine_fn bdrv_co_readv_no_serialising(BlockDriverState *bs, BDRV_REQ_NO_SERIALISING); } -int coroutine_fn bdrv_co_copy_on_readv(BlockDriverState *bs, - int64_t sector_num, int nb_sectors, QEMUIOVector *qiov) -{ - trace_bdrv_co_copy_on_readv(bs, sector_num, nb_sectors); - - return bdrv_co_do_readv(bs, sector_num, nb_sectors, qiov, - BDRV_REQ_COPY_ON_READ); -} - #define MAX_WRITE_ZEROES_BOUNCE_BUFFER 32768 static int coroutine_fn bdrv_co_do_write_zeroes(BlockDriverState *bs, diff --git a/block/stream.c b/block/stream.c index 40aa32212e..c0efbda34e 100644 --- a/block/stream.c +++ b/block/stream.c @@ -39,7 +39,7 @@ typedef struct StreamBlockJob { char *backing_file_str; } StreamBlockJob; -static int coroutine_fn stream_populate(BlockDriverState *bs, +static int coroutine_fn stream_populate(BlockBackend *blk, int64_t sector_num, int nb_sectors, void *buf) { @@ -52,7 +52,8 @@ static int coroutine_fn stream_populate(BlockDriverState *bs, qemu_iovec_init_external(&qiov, &iov, 1); /* Copy-on-read the unallocated clusters */ - return bdrv_co_copy_on_readv(bs, sector_num, nb_sectors, &qiov); + return blk_co_preadv(blk, sector_num * BDRV_SECTOR_SIZE, qiov.size, &qiov, + BDRV_REQ_COPY_ON_READ); } typedef struct { @@ -64,6 +65,7 @@ static void stream_complete(BlockJob *job, void *opaque) { StreamBlockJob *s = container_of(job, StreamBlockJob, common); StreamCompleteData *data = opaque; + BlockDriverState *bs = blk_bs(job->blk); BlockDriverState *base = s->base; if (!block_job_is_cancelled(&s->common) && data->reached_end && @@ -75,8 +77,8 @@ static void stream_complete(BlockJob *job, void *opaque) base_fmt = base->drv->format_name; } } - data->ret = bdrv_change_backing_file(job->bs, base_id, base_fmt); - bdrv_set_backing_hd(job->bs, base); + data->ret = bdrv_change_backing_file(bs, base_id, base_fmt); + bdrv_set_backing_hd(bs, base); } g_free(s->backing_file_str); @@ -88,7 +90,8 @@ static void coroutine_fn stream_run(void *opaque) { StreamBlockJob *s = opaque; StreamCompleteData *data; - BlockDriverState *bs = s->common.bs; + BlockBackend *blk = s->common.blk; + BlockDriverState *bs = blk_bs(blk); BlockDriverState *base = s->base; int64_t sector_num = 0; int64_t end = -1; @@ -159,7 +162,7 @@ wait: goto wait; } } - ret = stream_populate(bs, sector_num, n, buf); + ret = stream_populate(blk, sector_num, n, buf); } if (ret < 0) { BlockErrorAction action = |