Date: Tue, 12 Mar 2019 23:21:59 -0700
From: Jason Thorpe <thor...@me.com>
Message-ID: <ab3dd6e8-9ed7-4929-bf24-c03ec593e...@me.com>
| THAT is particularly special, because the code in question is:
|
| <snip>
| void
| uvm_pagewire(struct vm_page *pg)
| {
| KASSERT(mutex_owned(&uvm_pageqlock));
| #if defined(READAHEAD_STATS)
| if ((pg->pqflags & PQ_READAHEAD) != 0) {
| uvm_ra_hit.ev_count++;
| pg->pqflags &= ~PQ_READAHEAD;
| }
| #endif /* defined(READAHEAD_STATS) */
| if (pg->wire_count == 0) {
| uvm_pagedequeue(pg);
| uvmexp.wired++;
| }
| pg->wire_count++;
| KASSERT(pg->wire_count > 0); /* detect wraparound */
| }
| </snip>
Actually, that probably also explains why my kernel is not crashing.
I don't have DIAGNOSTIC enabled, so that KASSERT() does not happen
in my kernel. Realised that when I was about to add the KASSERT
you suggested... I will change that while continuing to test this.
kre
