diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2016-04-07 18:33:33 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2016-05-12 15:22:07 +0200 |
| commit | ce0f141259f06fd77fde2519cc352618ad797ce2 (patch) | |
| tree | 204c5d21527ea538dddc7cdda5c239cf6a08c5e9 /include | |
| parent | b6e84c97ed0d786a7cda4e184736e25bb8824c2c (diff) | |
block: introduce bdrv_no_throttling_begin/end
Extract the handling of throttling from bdrv_flush_io_queue. These
new functions will soon become BdrvChildRole callbacks, as they can
be generalized to "beginning of drain" and "end of drain".
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/block/block_int.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/include/block/block_int.h b/include/block/block_int.h index 10d87595be..ed9314b615 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -424,10 +424,10 @@ struct BlockDriverState { /* I/O throttling. * throttle_state tells us if this BDS has I/O limits configured. - * io_limits_enabled tells us if they are currently being - * enforced, but it can be temporarily set to false */ + * io_limits_disabled tells us if they are currently being enforced */ CoQueue throttled_reqs[2]; - bool io_limits_enabled; + unsigned int io_limits_disabled; + /* The following fields are protected by the ThrottleGroup lock. * See the ThrottleGroup documentation for details. */ ThrottleState *throttle_state; @@ -713,6 +713,9 @@ BdrvChild *bdrv_root_attach_child(BlockDriverState *child_bs, const BdrvChildRole *child_role); void bdrv_root_unref_child(BdrvChild *child); +void bdrv_no_throttling_begin(BlockDriverState *bs); +void bdrv_no_throttling_end(BlockDriverState *bs); + void blk_dev_change_media_cb(BlockBackend *blk, bool load); bool blk_dev_has_removable_media(BlockBackend *blk); bool blk_dev_has_tray(BlockBackend *blk); |