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@gmail.com>
Sent : 2014-03-20 22:05:30 ( +09:00 )
To : pravin jadav <pravin.jadav17@gmail.com>
Cc : Kernelnewbies@kernelnewbies.org <Kernelnewbies@kernelnewbies.org>
Subject : Re: how to get PFN of page cache?

On Mar 20, 2014 5:22 PM, "pravin jadav" <pravin.jadav17@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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