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From: Jens Axboe <[email protected]>
To: [email protected]
Cc: [email protected], [email protected],
	[email protected],
	Minghao Chi <[email protected]>,
	Zeal Robot <[email protected]>
Subject: Re: [PATCH] io_uring: Remove redundant NULL check before kfree
Date: Thu, 2 Jun 2022 01:47:38 -0600	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

On 6/2/22 1:18 AM, [email protected] wrote:
> diff --git a/fs/io_uring.c b/fs/io_uring.c
> index 1fc0166d9133..d1fe967f2343 100644
> --- a/fs/io_uring.c
> +++ b/fs/io_uring.c
> @@ -4445,8 +4445,7 @@ static int io_read(struct io_kiocb *req, unsigned int issue_flags)
>  	kiocb_done(req, ret, issue_flags);
>  out_free:
>  	/* it's faster to check here then delegate to kfree */
> -	if (iovec)
> -		kfree(iovec);
> +	kfree(iovec);
>  	return 0;
>  }

There is _literally_ a comment right above your change that explains why
this is there. Please read surrounding code, at least.

-- 
Jens Axboe


      reply	other threads:[~2022-06-02  7:47 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-02  7:18 [PATCH] io_uring: Remove redundant NULL check before kfree cgel.zte
2022-06-02  7:47 ` Jens Axboe [this message]

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