mmap vs mtime in 2.6.26 and up

[Christoph Hellwig]

On Fri, Sep 25, 2009 at 02:47:42PM +0200, Ferenc Wagner wrote:
> I added some fresh test results to
> http://bugzilla.kernel.org/show_bug.cgi?id=2645.  In short, under
> 2.6.30-rc8 the test program reports full failure on XFS and RAMFS,
> full success on EXT3, VFAT and ReiserFS, and mixed results on TMPFS:

There's a patch queued up for inclusion in 2.6.32 to work around this
issue in XFS.  The lack of a proper callout from the VFS still makes
this a much less than ideal solution.