From: Andi Kleen <andi@firstfloor.org>
To: Alexey Dobriyan <adobriyan@gmail.com>
Cc: viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org,
npiggin@kernel.dk
Subject: Re: [PATCH] dcache: faster dentry_cmp()
Date: Tue, 14 Feb 2012 17:46:24 -0800 [thread overview]
Message-ID: <m2ehtw7tsf.fsf@firstfloor.org> (raw)
In-Reply-To: <20120214224526.GA3478@p183.telecom.by> (Alexey Dobriyan's message of "Wed, 15 Feb 2012 01:45:27 +0300")
Alexey Dobriyan <adobriyan@gmail.com> writes:
> 1) consistently use "unsigned int" for dentry name length,
> 2) reuse subtraction result for return value, exact value doesn't matter
> because function is only used in boolean context,
> 3) use *p++ idiom for even better code.
I'm sure there are even better ways to do the comparision using longer
words, especially as we know the boundaries and alignment.
-Andi
--
ak@linux.intel.com -- Speaking for myself only
next prev parent reply other threads:[~2012-02-15 1:46 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-14 22:45 [PATCH] dcache: faster dentry_cmp() Alexey Dobriyan
2012-02-14 22:58 ` Al Viro
2012-02-15 8:14 ` Alexey Dobriyan
2012-02-15 1:41 ` Matthew Wilcox
2012-02-15 8:14 ` Alexey Dobriyan
2012-02-15 1:46 ` Andi Kleen [this message]
2012-02-15 8:16 ` Alexey Dobriyan
2012-02-15 11:19 ` Alexey Dobriyan
2012-02-15 20:20 ` Andi Kleen
2012-04-20 12:06 ` Nick Piggin
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