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block: add bdrv_co_discard and bdrv_aio_discard support

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This similarly adds support for coroutine and asynchronous discard.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini 2011-10-17 12:32:14 +02:00 • committed by Kevin Wolf
parent 6f6dc6565e
commit 4265d620c5
5 changed files with 109 additions and 17 deletions
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10
block/raw.c
View file

@ -45,9 +45,10 @@ static int raw_probe(const uint8_t *buf, int buf_size, const char *filename)
return 1; /* everything can be opened as raw image */
}
static int raw_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors)
static int coroutine_fn raw_co_discard(BlockDriverState *bs,
int64_t sector_num, int nb_sectors)
{
return bdrv_discard(bs->file, sector_num, nb_sectors);
return bdrv_co_discard(bs->file, sector_num, nb_sectors);
}
static int raw_is_inserted(BlockDriverState *bs)
@ -109,15 +110,16 @@ static BlockDriver bdrv_raw = {
.bdrv_open = raw_open,
.bdrv_close = raw_close,
.bdrv_co_readv = raw_co_readv,
.bdrv_co_writev = raw_co_writev,
.bdrv_co_flush = raw_co_flush,
.bdrv_co_discard = raw_co_discard,
.bdrv_probe = raw_probe,
.bdrv_getlength = raw_getlength,
.bdrv_truncate = raw_truncate,
.bdrv_discard = raw_discard,
.bdrv_is_inserted = raw_is_inserted,
.bdrv_media_changed = raw_media_changed,
.bdrv_eject = raw_eject,