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From: Miklos Szeredi <miklos@szeredi.hu>
To: salikhmetov@gmail.com
Cc: miklos@szeredi.hu, linux-mm@kvack.org, jakob@unthought.net,
	linux-kernel@vger.kernel.org, valdis.kletnieks@vt.edu,
	riel@redhat.com, ksm@42.dk, staubach@redhat.com,
	jesper.juhl@gmail.com, torvalds@linux-foundation.org,
	a.p.zijlstra@chello.nl, akpm@linux-foundation.org,
	protasnb@gmail.com, r.e.wolff@bitwizard.nl,
	hidave.darkstar@gmail.com, hch@infradead.org
Subject: Re: [PATCH -v8 4/4] The design document for memory-mapped file times update
Date: Wed, 23 Jan 2008 11:53:00 +0100	[thread overview]
Message-ID: <E1JHdE4-0002Jk-QG@pomaz-ex.szeredi.hu> (raw)
In-Reply-To: <4df4ef0c0801230237g2f26f0d1j2d2ada2ce62ba284@mail.gmail.com> (salikhmetov@gmail.com)

> I've already written in the cover letter that functional tests passed
> successfully.
>
> debian:~/times# ./times /mnt/file
> begin   1201084493      1201084493      1201084281
> write   1201084494      1201084494      1201084281
> mmap    1201084494      1201084494      1201084495
> b       1201084496      1201084496      1201084495

Ah, OK, this is becuase mmap doesn't actually set up the page tables
by default.   Try adding MAP_POPULATE to the flags.

Please also try

   ./times /mnt/file -s

Thanks,
Miklos

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  reply	other threads:[~2008-01-23 10:53 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-22 23:21 [PATCH -v8 0/4] Fixing the issue with memory-mapped file times Anton Salikhmetov
2008-01-22 23:21 ` [PATCH -v8 1/4] Massive code cleanup of sys_msync() Anton Salikhmetov
2008-01-22 23:21 ` [PATCH -v8 2/4] Update ctime and mtime for memory-mapped files Anton Salikhmetov
2008-01-23 18:03   ` Linus Torvalds
2008-01-23 23:14     ` Anton Salikhmetov
2008-01-22 23:21 ` [PATCH -v8 3/4] Enable the MS_ASYNC functionality in sys_msync() Anton Salikhmetov
2008-01-23  8:47   ` Peter Zijlstra
2008-01-23  8:51     ` Peter Zijlstra
2008-01-23  9:34       ` Miklos Szeredi
2008-01-23  9:51         ` Miklos Szeredi
2008-01-23 13:09           ` Anton Salikhmetov
2008-01-23 12:53     ` Anton Salikhmetov
2008-01-23  9:41   ` Miklos Szeredi
2008-01-23 17:05   ` Linus Torvalds
2008-01-23 17:26     ` Anton Salikhmetov
2008-01-23 17:41     ` Peter Zijlstra
2008-01-23 19:35       ` Linus Torvalds
2008-01-23 19:55         ` Miklos Szeredi
2008-01-23 21:00           ` Linus Torvalds
2008-01-23 21:16             ` Miklos Szeredi
2008-01-23 21:36               ` Linus Torvalds
2008-01-23 22:29                 ` Hugh Dickins
2008-01-23 22:41                   ` Linus Torvalds
2008-01-24  0:03                     ` Hugh Dickins
2008-01-24  0:05                 ` Miklos Szeredi
2008-01-24  0:11                   ` Linus Torvalds
2008-01-24  1:36     ` Nick Piggin
2008-01-24 18:56       ` Matt Mackall
2008-01-22 23:21 ` [PATCH -v8 4/4] The design document for memory-mapped file times update Anton Salikhmetov
2008-01-23  9:26   ` Miklos Szeredi
2008-01-23 10:37     ` Anton Salikhmetov
2008-01-23 10:53       ` Miklos Szeredi [this message]
2008-01-23 11:16         ` Miklos Szeredi
2008-01-23 12:25           ` Anton Salikhmetov
2008-01-23 13:55             ` Miklos Szeredi
2008-01-25 16:27   ` Randy Dunlap
2008-01-25 16:40     ` Anton Salikhmetov

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