lkml.org 
[lkml]   [2005]   [Nov]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH ] Fix some problems with truncate and mtime semantics.
From
Date
On Tue, 2005-11-15 at 13:00 +1100, NeilBrown wrote:
> Resubmitting this patch to fix truncate/mtime semantics.
>
> It is against 2.6.14-mm2 and is probably suitable for 2.6.15, but can
> be held over to 2.6.16 if you are feeling cautious.
>
> NeilBrown
>
> ### Comments for Changeset
>
> SUS requires that when truncating a file to the size that it currently
> is:
> truncate and ftruncate should NOT modify ctime or mtime
> O_EXCL SHOULD modify ctime and mtime.
^^^^^ O_CREAT ;-)

> Currently mtime and ctime are always modified on most local
> filesystems (side effect of ->truncate) or never modified (on NFS).
>
> With this patch:
> ATTR_CTIME|ATTR_MTIME are sent with ATTR_SIZE precisely when
> an update of these times is required whether size changes or not
> (via a new argument to do_truncate). This allows NFS to do
> the right thing for O_EXCL.
^^^^^

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: 2005-11-15 03:05    [W:0.047 / U:0.280 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site