On 5/3/05, Andy Isaacson <[email protected]> wrote:
> Rather than replacing the fully-registered pages with pages of zeros,
> you could simply unmap them.
I don't like this option. It is nearly free to map all of the pages to
the zero-page. You never have to allocate a page if the user never
writes to it.
Buf if you unmap the page, there could be issues. The memory region
could be on the stack, or malloc'ed. In these cases, the child should
be able to return from the function, or free the memory without
setting a timebomb.
--
Bill Jordan
InfiniCon Systems
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
