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Re: [Qemu-devel] [RFC v2 04/15] Convert .bdrv_open and .bdrv_file_open t
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [RFC v2 04/15] Convert .bdrv_open and .bdrv_file_open to coroutine_fn |
Date: |
Thu, 29 Aug 2013 14:11:37 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Fri, Aug 09, 2013 at 07:43:54PM +0200, Charlie Shepherd wrote:
> Signed-off-by: Charlie Shepherd <address@hidden>
> ---
> block.c | 8 ++++----
> block/blkdebug.c | 4 ++--
> block/blkverify.c | 4 ++--
> block/bochs.c | 4 ++--
> block/cloop.c | 4 ++--
> block/cow.c | 4 ++--
> block/curl.c | 12 ++++++------
> block/dmg.c | 4 ++--
> block/nbd.c | 6 +++---
> block/parallels.c | 4 ++--
> block/qcow.c | 4 ++--
> block/qcow2.c | 2 +-
> block/qed.c | 4 ++--
> block/raw-posix.c | 20 ++++++++++----------
> block/raw.c | 4 ++--
> block/sheepdog.c | 10 +++++-----
> block/ssh.c | 4 ++--
> block/vdi.c | 4 ++--
> block/vhdx.c | 4 ++--
> block/vmdk.c | 4 ++--
> block/vpc.c | 4 ++--
> block/vvfat.c | 6 +++---
> include/block/block_int.h | 4 ++--
> 23 files changed, 64 insertions(+), 64 deletions(-)
>
> diff --git a/block.c b/block.c
> index 40f73ee..75a1e6b 100644
> --- a/block.c
> +++ b/block.c
> @@ -699,7 +699,7 @@ static int bdrv_open_common(BlockDriverState *bs,
> BlockDriverState *file,
> /* bdrv_open() with directly using a protocol as drv. This layer is
> already
> * opened, so assign it to bs (while file becomes a closed
> BlockDriverState)
> * and return immediately. */
> - if (file != NULL && drv->bdrv_file_open) {
> + if (file != NULL && drv->bdrv_co_file_open) {
> bdrv_swap(file, bs);
> return 0;
> }
> @@ -730,10 +730,10 @@ static int bdrv_open_common(BlockDriverState *bs,
> BlockDriverState *file,
> bs->enable_write_cache = !!(flags & BDRV_O_CACHE_WB);
>
> /* Open the image, either directly or using a protocol */
> - if (drv->bdrv_file_open) {
> + if (drv->bdrv_co_file_open) {
> assert(file == NULL);
> assert(drv->bdrv_parse_filename || filename != NULL);
> - ret = drv->bdrv_file_open(bs, options, open_flags);
> + ret = drv->bdrv_co_file_open(bs, options, open_flags);
> } else {
> if (file == NULL) {
> qerror_report(ERROR_CLASS_GENERIC_ERROR, "Can't use '%s' as a "
> @@ -744,7 +744,7 @@ static int bdrv_open_common(BlockDriverState *bs,
> BlockDriverState *file,
> }
> assert(file != NULL);
> bs->file = file;
> - ret = drv->bdrv_open(bs, options, open_flags);
> + ret = drv->bdrv_co_open(bs, options, open_flags);
> }
>
> if (ret < 0) {
bdrv_open_common() needs to be coroutine_fn too. I'm pretty sure
bdrv_open() is called outside coroutine context in some places. How do
you guarantee that it is executed inside a coroutine (a synchronous
wrapper would be necessary)?
Stefan
- [Qemu-devel] [RFC v2 01/15] Add an explanation of when a function should be marked coroutine_fn, Charlie Shepherd, 2013/08/09
- [Qemu-devel] [RFC v2 02/15] Rename qemu_coroutine_self to qemu_coroutine_self_int and add an annotated wrapper, Charlie Shepherd, 2013/08/09
- [Qemu-devel] [RFC v2 03/15] Explicitly mark BlockDriver function .bdrv_create as coroutine and rename it bdrv_co_create., Charlie Shepherd, 2013/08/09
- [Qemu-devel] [RFC v2 05/15] Make qcow2_open synchronous, Charlie Shepherd, 2013/08/09
- [Qemu-devel] [RFC v2 04/15] Convert .bdrv_open and .bdrv_file_open to coroutine_fn, Charlie Shepherd, 2013/08/09
- Re: [Qemu-devel] [RFC v2 04/15] Convert .bdrv_open and .bdrv_file_open to coroutine_fn,
Stefan Hajnoczi <=
- [Qemu-devel] [RFC v2 07/15] Call bdrv->open via a synchronous wrapper in block/snapshot.c, Charlie Shepherd, 2013/08/09
- [Qemu-devel] [RFC v2 06/15] Explicitly mark BlockDriver functions .bdrv_write and .bdrv_read as coroutine functions, Charlie Shepherd, 2013/08/09
- [Qemu-devel] [RFC v2 08/15] Convert bdrv_create and associated functions to be coroutine_fn, Charlie Shepherd, 2013/08/09
- [Qemu-devel] [RFC v2 09/15] Add a synchronous wrapper bdrv_sync_rwco, Charlie Shepherd, 2013/08/09
- [Qemu-devel] [RFC v2 11/15] Make bdrv_discard coroutine only and add bdrv_sync_discard, Charlie Shepherd, 2013/08/09
- [Qemu-devel] [RFC v2 12/15] Make bdrv_flush coroutine only and add bdrv_sync_flush, Charlie Shepherd, 2013/08/09