Messages in this thread | | | Date | Wed, 27 Dec 2006 19:49:59 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH] drop page cache of a single file |
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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().
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