lkml.org 
[lkml]   [2008]   [Jan]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH][RFC][BUG] updating the ctime and mtime time stamps in msync()
On Thu, 10 Jan 2008 18:56:07 +0300
"Anton Salikhmetov" <salikhmetov@gmail.com> wrote:

> However, I don't see how they will work if there has been
> something like a sync(2) done after the mmap'd region is
> modified and the msync call. When the inode is written out
> as part of the sync process, I_DIRTY_PAGES will be cleared,
> thus causing a miss in this code.
>
> The I_DIRTY_PAGES check here is good, but I think that there
> needs to be some code elsewhere too, to catch the case where
> I_DIRTY_PAGES is being cleared, but the time fields still need
> to be updated.

Agreed. The mtime and ctime should probably also be updated
when I_DIRTY_PAGES is cleared.

The alternative would be to remember that the inode had been
dirty in the past, and have the mtime and ctime updated on
msync or close - which would be more complex.

--
All rights reversed.


\
 
 \ /
  Last update: 2008-01-10 17:11    [W:0.052 / U:0.140 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site