Commit 2019ba0a authored by Max Reitz's avatar Max Reitz Committed by Kevin Wolf
Browse files

block: Add AioContextNotifier functions to BB 



Because all BlockDriverStates behind a single BlockBackend reside in a
single AioContext, it is fine to just pass these functions
(blk_add_aio_context_notifier() and blk_remove_aio_context_notifier())
through to the root BlockDriverState.

Signed-off-by: default avatarMax Reitz <mreitz@redhat.com>
Reviewed-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Message-id: 1416309679-333-3-git-send-email-mreitz@redhat.com
Signed-off-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent 2bb0dce7

block/block-backend.c

+18 −0
Original line number Diff line number Diff line
@@ -624,6 +624,24 @@ void blk_set_aio_context(BlockBackend *blk, AioContext *new_context) 
    bdrv_set_aio_context(blk->bs, new_context);

}



void blk_add_aio_context_notifier(BlockBackend *blk,

        void (*attached_aio_context)(AioContext *new_context, void *opaque),

        void (*detach_aio_context)(void *opaque), void *opaque)

{

    bdrv_add_aio_context_notifier(blk->bs, attached_aio_context,

                                  detach_aio_context, opaque);

}



void blk_remove_aio_context_notifier(BlockBackend *blk,

                                     void (*attached_aio_context)(AioContext *,

                                                                  void *),

                                     void (*detach_aio_context)(void *),

                                     void *opaque)

{

    bdrv_remove_aio_context_notifier(blk->bs, attached_aio_context,

                                     detach_aio_context, opaque);

}



void blk_io_plug(BlockBackend *blk)

{

    bdrv_io_plug(blk->bs);

include/sysemu/block-backend.h

+8 −0
Original line number Diff line number Diff line
@@ -135,6 +135,14 @@ void blk_op_block_all(BlockBackend *blk, Error *reason); 
void blk_op_unblock_all(BlockBackend *blk, Error *reason);

AioContext *blk_get_aio_context(BlockBackend *blk);

void blk_set_aio_context(BlockBackend *blk, AioContext *new_context);

void blk_add_aio_context_notifier(BlockBackend *blk,

        void (*attached_aio_context)(AioContext *new_context, void *opaque),

        void (*detach_aio_context)(void *opaque), void *opaque);

void blk_remove_aio_context_notifier(BlockBackend *blk,

                                     void (*attached_aio_context)(AioContext *,

                                                                  void *),

                                     void (*detach_aio_context)(void *),

                                     void *opaque);

void blk_io_plug(BlockBackend *blk);

void blk_io_unplug(BlockBackend *blk);

BlockAcctStats *blk_get_stats(BlockBackend *blk);