Chris Mason wrote:
On Thu, Feb 08, 2007 at 01:44:15AM +1100, David Chinner wrote:
So, do I need to grab the i_mutex here? Is that safe to do that in
the middle of a page fault? If we do race with a truncate and the
page is now beyond EOF, what am I supposed to return?
Should it check to make sure the page is still in the address space
after locking it?
Yes. If the page was truncated/invalidated, then you can just return
and the pagefault handler should notice that it has been removed from
the page tables.
--
SUSE Labs, Novell Inc.
Send instant messages to your online friends http://au.messenger.yahoo.com
-
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
