Vladimir Saveliev [off-list ref] wrote:

+int perthread_pages_reserve(int nrpages, int gfp)
 +{
 +	int i;
 +	struct list_head  accumulator;
 +	struct list_head *per_thread;
 +
 +	per_thread = get_per_thread_pages();
 +	INIT_LIST_HEAD(&accumulator);
 +	list_splice_init(per_thread, &accumulator);
 +	for (i = 0; i < nrpages; ++i) {

This will end up reserving more pages than were asked for, if
current->private_pages_count is non-zero.  Deliberate?
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