Re: [LTP] [PATCH] aio_suspend/3-1: cancel the aio_write operations

[Wanlong Gao <gaowanlong@cn.fujitsu.com>]

On 07/26/2012 10:22 AM, Kang Kai wrote:
> After aio_suspend, call aio_cancel to cancel other aio_write operations
> then wait them to canceld or complete.
> 
> If don't do that, it fails with "Segmentation fault" on routerstation(mips)
> board randomly about in 1000 continuous test. The reason may be some
> aio_writes don't complete before close the file, that cause some resouse
> don't be released and finally cause segment fault.
> 
> Signed-off-by: Kang Kai <kai.kang@windriver.com>
> ---
>  .../conformance/interfaces/aio_suspend/3-1.c       |   15 +++++++++++++++
>  1 files changed, 15 insertions(+), 0 deletions(-)
> 
> diff --git a/testcases/open_posix_testsuite/conformance/interfaces/aio_suspend/3-1.c b/testcases/open_posix_testsuite/conformance/interfaces/aio_suspend/3-1.c
> index 15120e1..49d204a 100644
> --- a/testcases/open_posix_testsuite/conformance/interfaces/aio_suspend/3-1.c
> +++ b/testcases/open_posix_testsuite/conformance/interfaces/aio_suspend/3-1.c
> @@ -87,6 +87,21 @@ int main()
>  		exit(PTS_FAIL);
>  	}
>  
> +	if (aio_cancel(fd, NULL) == -1) {
> +		printf(TNAME " Error at aio_cancel(): %s\n", strerror(errno));
> +		exit(PTS_FAIL);
> +	}

Try to cancel the pending aio seems useless, how about waiting aios until completed?
Can you test like below?
	
	for (i = 0; i < NAIOCB; i++) {
		do {
			usleep(10000);
			ret = aio_error(&aiocb[i]);
		} while (ret == EINPROGRESS);
		if (ret < 0) {
			printf(TNAME " Error at aio_error() : %s\n", strerror(ret));
			exit(PTS_FAIL);
		}
	}

Thanks,
Wanlong Gao

> +
> +
> +	while (1) {
> +		for (i = 0; i < NAIOCB; ++i) {
> +			if (aio_error(&aiocb[i]) == EINPROGRESS)
> +				break;
> +		}
> +		if (i == NAIOCB)
> +			break;
> +	}
> +
>  	close(fd);
>  	printf("Test PASSED\n");
>  	return PTS_PASS;
> 


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