> The mmap_sem works because then ->i_size can't be sampled by
> filemap_nopage() before the pagetable wiping operation starts.
So why isn't that the right way to do it? Waiting for mmap_sem guarantees
we won't catch a page fault in flight, which is the cause of the problem in
the first place.
Dave
======================================================================
Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059
dmccr@us.ibm.com T/L 678-3059
-
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/