On Wed, 10 May 2006, Adam Litke wrote:
>
> Strict overcommit is there for shared mappings. When private mapping
I presume that by "strict overcommit" you mean "strict no overcommit".
> support was added, people agreed that full overcommit should apply to
> private mappings for the same reasons normal page overcommit is desired.
I'm not sure how wide that agreement was. But what I wanted to say is...
> For one: an application using lots of private huge pages should not be
> prohibited from forking if it's likely to just exec a small helper
> program.
This is an excellent use for madvise(start, length, MADV_DONTFORK).
Though it was added mainly for RDMA issues, it's a great way for a
program with a huge commitment to exclude areas of its address space
from the fork, so making that fork much more likely to succeed.
Hugh
-
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]
