Re: Where does a process wait after requesting some data file ?

[Francis Moreau <francis.moro@gmail.com>]

Matthew Wilcox <matthew@wil.cx> writes:

> On Fri, Jan 16, 2009 at 05:30:12PM +0100, Francis Moreau wrote:
>> > As the comment says, when the read finishes, it will unlock the page
>> > and the reader will continue.
>> 
>> I expect that the comment you're talking about is this one in
>> do_generic_file_read():
>> 
>> page_not_up_to_date:
>>                 /* Get exclusive access to the page ... */
>
> I meant this one:
>
> readpage:
>                 /* Start the actual read. The read will unlock the page. */
>

Well, if I read the code correctly, this is executed if
page_cache_sync_readahead() failed which is not the 'normal' path.

Thanks
-- 
Francis