LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: "Xin Zhao" <uszhaoxin@gmail.com>
To: linux-kernel@vger.kernel.org
Subject: page cache question
Date: Mon, 27 Feb 2006 02:45:33 -0500	[thread overview]
Message-ID: <4ae3c140602262345g43e71a2oea7db21c05dd5aba@mail.gmail.com> (raw)

Sorry if this question is dumb.

Linux uses address_space to identify pages in the page cache. An
address space is often associated with a memory object such as inode.
That seems to associate the cached page with that inode. My question
is: if a file is closed and the inode is destroyed, will the cached
page be removed from page cache immediately?  If so, does that mean
the file system has to load data from disk again if a user promptly
open and read the same file again? If not, how does linux determine
when to evict a cached page? using LRU?

Thanks in advance for your kind help!

-x

             reply	other threads:[~2006-02-27  7:45 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-02-27  7:45 Xin Zhao [this message]
2006-02-27  9:03 ` Nick Piggin
2007-08-05 16:32 Page Cache Question Adnan Khaleel
2007-08-05 17:46 ` Tino Keitel
2007-08-05 18:01 ` Andi Kleen
2007-08-14 10:14 ` Helge Hafting
2007-08-14 14:38   ` Eugene Teo
2007-08-05 17:24 Page Cache question Adnan Khaleel
     [not found] <fa.ak7dGOAL/3/Q6eQ0zKX2KgaiWdU@ifi.uio.no>
2007-08-05 17:38 ` Robert Hancock

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=4ae3c140602262345g43e71a2oea7db21c05dd5aba@mail.gmail.com \
    --to=uszhaoxin@gmail.com \
    --cc=linux-kernel@vger.kernel.org \
    --subject='Re: page cache question' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).