lkml.org 
[lkml]   [2007]   [Jul]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [EXT4 set 4][PATCH 1/5] i_version:64 bit inode version
On Tue, 10 Jul 2007 22:09:08 -0400 Mingming Cao <cmm@us.ibm.com> wrote:

> David Chinneer pointed that we need to journal the version number
> updates together with the operations that causes the change of the inode
> version number, in order to survive server crashes so clients won't see
> the counter go backwards.
>
> So increment i_version in fs code is probably the place to ensure the
> inode version changes are stored to disk. It's seems update the ext4
> inode version in every ext4_mark_inode_dirty() is the easiest way.

That still makes us dependent upon _something_ changing the inode. For
overwrites the only something is mtime.

If we don't want to have a peculiar dependency upon s_time_gran=1e9 (and
I don't think we do) then I guess we'll need new code in or around
file_update_time() to do this.
-
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: 2007-07-11 07:21    [from the cache]
©2003-2011 Jasper Spaans