linux-kernel - Re: [PATCH v8 04/20] cachefiles: notify user daemon when withdrawing cookie

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Message-ID: <1091405.1649680508@warthog.procyon.org.uk>
Date:   Mon, 11 Apr 2022 13:35:08 +0100
From:   David Howells <dhowells@...hat.com>
To:     Jeffle Xu <jefflexu@...ux.alibaba.com>
Cc:     dhowells@...hat.com, linux-cachefs@...hat.com, xiang@...nel.org,
        chao@...nel.org, linux-erofs@...ts.ozlabs.org,
        torvalds@...ux-foundation.org, gregkh@...uxfoundation.org,
        willy@...radead.org, linux-fsdevel@...r.kernel.org,
        joseph.qi@...ux.alibaba.com, bo.liu@...ux.alibaba.com,
        tao.peng@...ux.alibaba.com, gerry@...ux.alibaba.com,
        eguan@...ux.alibaba.com, linux-kernel@...r.kernel.org,
        luodaowen.backend@...edance.com, tianzichen@...ishou.com,
        fannaihao@...du.com
Subject: Re: [PATCH v8 04/20] cachefiles: notify user daemon when withdrawing cookie

Jeffle Xu <jefflexu@...ux.alibaba.com> wrote:

> +static int init_close_req(struct cachefiles_req *req, void *private)

"cachefiles_" prefix please.

> +	/*
> +	 * It's possible if the cookie looking up phase failed before READ
> +	 * request has ever been sent.
> +	 */

What "it" is possible?  You might want to say "It's possible that the
cookie..."

> +	if (fd == 0)
> +		return -ENOENT;

0 is a valid fd.

David