Re: internel implemention of file operation

[Rajat Sharma <fs.rajat@xxxxxxxxx>]

unfortunately these are not the topic to digest in a mail, I recommend you reading UTLK book (http://shop.oreilly.com/product/9780596005658.do).

Still...

> will it be maped with vm_area struct ?

Yes if it is accessed via mmap system call.

> what is the relation between page-cache and file operation?

file operations for data access like read/write will look into page-cache first before going to disk.

-Rajat

On Thu, Jan 3, 2013 at 1:01 PM, horseriver <horserivers@xxxxxxxxx> wrote:

On Thu, Jan 03, 2013 at 12:48:01PM +0530, Rajat Sharma wrote:
> Never heard of page-cache?

will it be maped with vm_area struct ?
what is the relation between page-cache and file operation?

thanks!

>
>
> On Thu, Jan 3, 2013 at 12:29 PM, horseriver <horserivers@xxxxxxxxx> wrote:
>
> > hi:
> >
> >   when one file is opened , does its  data be put into memory ? and all
> > operation on this file
> >
> >   will be implemented by operation on its mapping memory area ?
> >
> > thanks!
> >
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> >

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