On Wed, 2008-07-16 at 22:47 +0100, Mel Gorman wrote:
> > + if (fd < 0) {
> > + ERROR("kernel_has_private_reservations: hugetlbfs_unlinked_fd: "
> > + "%s\n", strerror(errno));
> > + return -1;
> > + }
> > + map = mmap(NULL, gethugepagesize(), PROT_READ|PROT_WRITE, MAP_PRIVATE,
> > fd, 0);
> > + if (map == MAP_FAILED) {
> > + ERROR("kernel_has_private_reservations: mmap: %s\n",
> > + strerror(errno));
> > + return -1;
> > + }
>
> Why is this an error? It implies that the kernel supports private
> reservations bu the pool is empty.
You are right.. It probably means that. I just wasn't convinced that
private reservations were the only thing that could cause that mmap to
fail and wanted to avoid a false positive.
--
Adam Litke - (agl at us.ibm.com)
IBM Linux Technology Center
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