Anton Salikhmetov wrote:
> From: Anton Salikhmetov <salikhmetov@gmail.com>
>
> The patch contains changes for updating the ctime and mtime fields for memory mapped files:
>
> 1) adding a new flag triggering update of the inode data;
> 2) implementing a helper function for checking that flag and updating ctime and mtime;
> 3) updating time stamps for mapped files in sys_msync() and do_fsync().

Sorry, one other issue to throw out too -- an mmap'd block device
should also have its inode time fields updated.  This is a little
tricky because the inode referenced via mapping->host isn't the
one that needs to have the time fields updated on.

I have attached the patch that I submitted last.  It is quite out
of date, but does show my attempt to resolve some of these issues.

    Thanx...

       ps