linux-kernel - Re: 回复: [PATCH v1] lib:Fix an NULL vs IS_ERR() bug for debugfs_create_dir() in err_inject

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Date:   Thu, 13 Jul 2023 08:01:08 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     王明-软件底层技术部 
        <machel@...o.com>
Cc:     David Hildenbrand <david@...hat.com>,
        Akinobu Mita <akinobu.mita@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "opensource.kernel" <opensource.kernel@...o.com>
Subject: Re: 回复: [PATCH v1] lib:Fix an NULL vs IS_ERR() bug for
 debugfs_create_dir() in err_inject_init()

A: http://en.wikipedia.org/wiki/Top_post
Q: Were do I find info about this thing called top-posting?
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?

A: No.
Q: Should I include quotations after my reply?

http://daringfireball.net/2007/07/on_top

On Thu, Jul 13, 2023 at 02:09:03AM +0000, 王明-软件底层技术部 wrote:
> Hi greg k-h
> I proposed this patch because I found that debugfs_create_dir() does
> not return NULL, but returns an error pointer, executing if statements
> according to the original code meaning no error, so I made this change
> : )

That's fine, but you should fix this up to use the api properly if you
are making these types of changes, otherwise we just have to do it again
in the future.

thanks,

greg k-h