From: Greg KH <gregkh@linuxfoundation.org>
To: Wei Yang <richard.weiyang@gmail.com>
Cc: kuba@kernel.org, neilb@suse.com, mojha@codeaurora.org,
jkosina@suse.cz, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] hashtable: remove a redundant check in hash_for_each_xxx()
Date: Wed, 6 Oct 2021 17:29:02 +0200 [thread overview]
Message-ID: <YV3AvszXKVBA5BNz@kroah.com> (raw)
In-Reply-To: <20211006152100.17795-1-richard.weiyang@gmail.com>
On Wed, Oct 06, 2021 at 03:21:00PM +0000, Wei Yang wrote:
> The three hash_for_each_xxx() helper iterate the hash table with help
> of hlist_for_each_entry_xxx(), which breaks the loop only when obj is
> NULL.
>
> This means the check during each iteration is redundant. This patch
> removes it.
Are you sure that the compiler didn't already remove it? Is the code
output the same or different with this change?
How did you test this?
thanks,
greg k-h
next prev parent reply other threads:[~2021-10-06 15:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-06 15:21 [PATCH] hashtable: remove a redundant check in hash_for_each_xxx() Wei Yang
2021-10-06 15:29 ` Greg KH [this message]
2021-10-06 21:16 ` NeilBrown
2021-10-07 0:30 ` Wei Yang
2021-10-07 0:50 ` NeilBrown
2021-10-07 23:40 ` Wei Yang
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