From: Andrew Morton <akpm@zip.com.au>
To: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Marcelo Tosatti <marcelo@conectiva.com.br>,
Linus Torvalds <torvalds@transmeta.com>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: [patch] smarter atime updates
Date: Fri, 30 Nov 2001 01:56:00 -0800 [thread overview]
Message-ID: <3C0757B0.CF881394@zip.com.au> (raw)
In-Reply-To: <3C072279.D346CD09@zip.com.au>, <3C072279.D346CD09@zip.com.au> <87n1144mo6.fsf@devron.myhome.or.jp>
OGAWA Hirofumi wrote:
>
> #define UPDATE_ATIME(inode) \
> do { \
> if ((inode)->i_atime != CURRENT_TIME) \
> update_atime (inode); \
> } while (0)
>
yes, that'd be fine. The more conventional approach
would be to blow away the strange UPPER CASE name and:
static inline void update_atime(struct inode *inode)
{
if (inode->i_atime != CURRENT_TIME)
__update_atime(inode);
}
But that would be a bigger patch, and I rather like shaving
off three quarters of the sys_read() overhead with a two-liner ;)
-
next prev parent reply other threads:[~2001-11-30 9:56 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-11-30 6:08 [patch] smarter atime updates Andrew Morton
2001-11-30 9:45 ` OGAWA Hirofumi
2001-11-30 9:56 ` Andrew Morton [this message]
2001-11-30 10:40 ` OGAWA Hirofumi
2001-11-30 22:34 ` H. Peter Anvin
2001-11-30 15:44 ` Marcelo Tosatti
2001-11-30 17:29 ` Chris Mason
2001-11-30 20:03 ` Robert Love
2001-11-30 21:52 ` Andreas Dilger
2001-11-30 21:50 ` Linus Torvalds
2001-11-30 22:30 ` Simon Kirby
2001-11-30 23:31 ` H. Peter Anvin
2001-12-01 9:22 ` Hans Reiser
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