Re: [PATCH v2] io_uring: fix bug of wrong BUILD_BUG_ON check of __REQ_F_LAST_BIT

[Hao Xu <haoxu@xxxxxxxxxxxxxxxxx>]

ping
在 2021/9/7 上午11:22, Hao Xu 写道:
> Build check of __REQ_F_LAST_BIT should be large than not equal or large
> than.
>
> Signed-off-by: Hao Xu <haoxu@xxxxxxxxxxxxxxxxx>
> ---
>   fs/io_uring.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/io_uring.c b/fs/io_uring.c
> index 2bde732a1183..d159d9204e07 100644
> --- a/fs/io_uring.c
> +++ b/fs/io_uring.c
> @@ -10643,7 +10643,7 @@ static int __init io_uring_init(void)
>   	BUILD_BUG_ON(SQE_VALID_FLAGS >= (1 << 8));
>   
>   	BUILD_BUG_ON(ARRAY_SIZE(io_op_defs) != IORING_OP_LAST);
> -	BUILD_BUG_ON(__REQ_F_LAST_BIT >= 8 * sizeof(int));
> +	BUILD_BUG_ON(__REQ_F_LAST_BIT > 8 * sizeof(int));
>   
>   	req_cachep = KMEM_CACHE(io_kiocb, SLAB_HWCACHE_ALIGN | SLAB_PANIC |
>   				SLAB_ACCOUNT);