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From: Andrew Morton <akpm@osdl.org>
To: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] drop page cache of a single file
Date: Wed, 27 Dec 2006 19:49:59 -0800 [thread overview]
Message-ID: <20061227194959.0ebce0e4.akpm@osdl.org> (raw)
In-Reply-To: <1167275845.15989.153.camel@ymzhang>
On Thu, 28 Dec 2006 11:17:25 +0800
"Zhang, Yanmin" <yanmin_zhang@linux.intel.com> wrote:
> Currently, by /proc/sys/vm/drop_caches, applications could drop pagecache,
> slab(dentries and inodes), or both, but applications couldn't choose to
> just drop the page cache of one file. An user of VOD (Video-On-Demand)
> needs this capability to have more detailed control on page cache release.
The posix_fadvise() system call should be used for this. Probably in
combination with sys_sync_file_range().
next prev parent reply other threads:[~2006-12-28 3:50 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-28 3:17 Zhang, Yanmin
2006-12-28 3:49 ` Andrew Morton [this message]
[not found] ` <367290328.14058@ustc.edu.cn>
2006-12-28 7:19 ` Fengguang Wu
2006-12-28 10:29 ` Andrew Morton
2006-12-28 10:45 ` Russell King
2006-12-28 11:03 ` Andrew Morton
[not found] ` <367303459.19953@ustc.edu.cn>
2006-12-28 10:57 ` Fengguang Wu
2007-01-28 7:08 ` Vaidyanathan Srinivasan
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