lkml.org 
[lkml]   [2005]   [Sep]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: ctime set by truncate even if NOCMTIME requested
From
Date
må den 19.09.2005 Klokka 15:58 (-0500) skreiv Steve French:
> Trond Myklebust wrote:
>
> >It is quite correct for the kernel to request that the filesystem set
> >ctime/mtime on successful calls to open(O_TRUNC).
> > http://www.opengroup.org/onlinepubs/009695399/toc.htm
> >
> >
> I agree that it is correct to set ctime/mtime here, just not convinced
> it it worth setting it twice which is what will happen for non-local fs.
>
> client truncate -> client setattr(for both size and ctime) -> server
> setattr (which will have a sideffect of ctime to be set on the server,
> not just the change to file size) and then another call to the server to
> set the ctime (which will end up setting ctime twice - one to the
> (correct) server's time and once to the less correct client's time.

If the VFS sets ATTR_[ACM]TIME, you should always assume that you are
being requested to set the [acm]time to server time. Doesn't CIFS allow
you that option?

Cheers,
Trond

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-09-19 23:31    [W:0.119 / U:1.268 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site