how to get PFN of page cache?

[Chan Kim]

Pravin,
I think Pravin wants to know the Page Frame Number in memory management.(virtual<->physical conversion)
But the function drop_pagecache_sb seems to be about the disk cache(file magement or block layer).
Chan
________________________________
From : "Pranay Srivastava" <pranjas at gmail.com>
Sent : 2014-03-20 22:05:30 ( +09:00 )
To : pravin jadav <pravin.jadav17 at gmail.com>
Cc : Kernelnewbies at kernelnewbies.org <Kernelnewbies at kernelnewbies.org>
Subject : Re: how to get PFN of page cache?


On Mar 20, 2014 5:22 PM, "pravin jadav" <pravin.jadav17 at gmail.com<mailto:pravin.jadav17 at gmail.com>> wrote:
>
> i want to develop linux kernel module that will get PFN of pagecache pages.
> please help me how to develop this kind of kernel module.
>

See drop_pagecache_sb. What exactly you need??

I don't think you'll need to modify or access the memory defined by that page.

So i guess you could do a lockless version when you iterate over pages.

> --
>
> pravin jadav
> M.Tech (IT pursuing )
>
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