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block: Lift more functions into BlockBackend 

There are already some blk_aio_* functions, so we might as well have
blk_co_* functions (as far as we need them). This patch adds
blk_co_flush(), blk_co_discard(), and also blk_invalidate_cache() (which
is not a blk_co_* function but is needed nonetheless).

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1416309679-333-2-git-send-email-mreitz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2014-11-18 12:21:14 +01:00 committed by Kevin Wolf
parent 17fcb74af9
commit 2bb0dce762
2 changed files with 18 additions and 0 deletions
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15
block/block-backend.c
View File

@ -497,6 +497,16 @@ BlockAIOCB *blk_aio_ioctl(BlockBackend *blk, unsigned long int req, void *buf,
return bdrv_aio_ioctl(blk->bs, req, buf, cb, opaque);
}
int blk_co_discard(BlockBackend *blk, int64_t sector_num, int nb_sectors)
{
return bdrv_co_discard(blk->bs, sector_num, nb_sectors);
}
int blk_co_flush(BlockBackend *blk)
{
return bdrv_co_flush(blk->bs);
}
int blk_flush(BlockBackend *blk)
{
return bdrv_flush(blk->bs);
@ -549,6 +559,11 @@ void blk_set_enable_write_cache(BlockBackend *blk, bool wce)
bdrv_set_enable_write_cache(blk->bs, wce);
}
void blk_invalidate_cache(BlockBackend *blk, Error **errp)
{
bdrv_invalidate_cache(blk->bs, errp);
}
int blk_is_inserted(BlockBackend *blk)
{
return bdrv_is_inserted(blk->bs);

3
include/sysemu/block-backend.h
View File

@ -108,6 +108,8 @@ int blk_aio_multiwrite(BlockBackend *blk, BlockRequest *reqs, int num_reqs);
int blk_ioctl(BlockBackend *blk, unsigned long int req, void *buf);
BlockAIOCB *blk_aio_ioctl(BlockBackend *blk, unsigned long int req, void *buf,
BlockCompletionFunc *cb, void *opaque);
int blk_co_discard(BlockBackend *blk, int64_t sector_num, int nb_sectors);
int blk_co_flush(BlockBackend *blk);
int blk_flush(BlockBackend *blk);
int blk_flush_all(void);
void blk_drain_all(void);
@ -120,6 +122,7 @@ int blk_is_read_only(BlockBackend *blk);
int blk_is_sg(BlockBackend *blk);
int blk_enable_write_cache(BlockBackend *blk);
void blk_set_enable_write_cache(BlockBackend *blk, bool wce);
void blk_invalidate_cache(BlockBackend *blk, Error **errp);
int blk_is_inserted(BlockBackend *blk);
void blk_lock_medium(BlockBackend *blk, bool locked);
void blk_eject(BlockBackend *blk, bool eject_flag);