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block: Add blk_co_ioctl()

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Also convert blk_ioctl() into a generated_co_wrapper.

Signed-off-by: Alberto Faria <afaria@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220705161527.1054072-16-afaria@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
This commit is contained in:
Alberto Faria 2022-07-05 17:15:23 +01:00 • committed by Hanna Reitz
parent 25873f57c6
commit df02da003d
3 changed files with 8 additions and 10 deletions
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7
block/block-backend.c
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@ -1620,7 +1620,7 @@ void blk_aio_cancel_async(BlockAIOCB *acb)
}
/* To be called between exactly one pair of blk_inc/dec_in_flight() */
int coroutine_fn
static int coroutine_fn
blk_co_do_ioctl(BlockBackend *blk, unsigned long int req, void *buf)
{
IO_CODE();
@ -1634,13 +1634,14 @@ blk_co_do_ioctl(BlockBackend *blk, unsigned long int req, void *buf)
return bdrv_co_ioctl(blk_bs(blk), req, buf);
}
int blk_ioctl(BlockBackend *blk, unsigned long int req, void *buf)
int coroutine_fn blk_co_ioctl(BlockBackend *blk, unsigned long int req,
void *buf)
{
int ret;
IO_OR_GS_CODE();
blk_inc_in_flight(blk);
ret = blk_do_ioctl(blk, req, buf);
ret = blk_co_do_ioctl(blk, req, buf);
blk_dec_in_flight(blk);
return ret;