diff options
| author | Stefan Hajnoczi <stefanha@redhat.com> | 2012-11-14 11:43:23 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2013-01-02 15:31:39 +0100 |
| commit | 4065742ac0f3c84abdd8d718b44a88f3ac56015a (patch) | |
| tree | 615c932c1b7941d992ef3a288c34d60656dac5b5 /include/block/block.h | |
| parent | 5928023cef87847a295035487397b9ec701fdd6b (diff) | |
raw-posix: add raw_get_aio_fd() for virtio-blk-data-plane
The raw_get_aio_fd() function allows virtio-blk-data-plane to get the
file descriptor of a raw image file with Linux AIO enabled. This
interface is really a layering violation that can be resolved once the
block layer is able to run outside the global mutex - at that point
virtio-blk-data-plane will switch from custom Linux AIO code to using
the block layer.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'include/block/block.h')
| -rw-r--r-- | include/block/block.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/block/block.h b/include/block/block.h index b81d200b03..0719339231 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -365,6 +365,15 @@ void bdrv_disable_copy_on_read(BlockDriverState *bs); void bdrv_set_in_use(BlockDriverState *bs, int in_use); int bdrv_in_use(BlockDriverState *bs); +#ifdef CONFIG_LINUX_AIO +int raw_get_aio_fd(BlockDriverState *bs); +#else +static inline int raw_get_aio_fd(BlockDriverState *bs) +{ + return -ENOTSUP; +} +#endif + enum BlockAcctType { BDRV_ACCT_READ, BDRV_ACCT_WRITE, |