internel implemention of file operation

[horserivers@gmail.com (horseriver)]

On Thu, Jan 03, 2013 at 01:16:06PM +0530, Rajat Sharma wrote:

> > will it be maped with vm_area struct ?
> Yes if it is accessed via mmap system call.

you know that , in the struct vm_area_struct,there is a struct vm_operations_struct * vm_ops;

in this vm_operations_struct , there are open/close functions ,  are there necessary  relations between file 

operations and this struct ?

thanks!

> 
> > 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
>