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Merge from yamt-pagecache: use radixtree for page lookup. 

rbtree page lookup was introduced during the NetBSD 5.0 development cycle to
bypass lock contention problems with the (then) global page hash, and was a
temporary solution to allow us to make progress.radixtree is the intended
replacement.

Ok yamt@.
This commit is contained in:
ad 2019-12-14 17:31:53 +00:00
parent 6857513180
commit 83fea69fbb
1 changed files with 1 additions and 5 deletions
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6
sys/uvm/uvm_page.h
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@ -1,4 +1,4 @@
/* $NetBSD: uvm_page.h,v 1.85 2019/12/13 20:10:22 ad Exp $ */
/* $NetBSD: uvm_page.h,v 1.86 2019/12/14 17:31:53 ad Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@ -67,8 +67,6 @@
#include <uvm/uvm_extern.h>
#include <uvm/uvm_pglist.h>
#include <sys/rbtree.h>
/*
* Management of resident (logical) pages.
*
@ -151,8 +149,6 @@
*/
struct vm_page {
struct rb_node rb_node; /* o: tree of pages in obj */
union {
TAILQ_ENTRY(vm_page) queue; /* w: wired page queue
* or uvm_pglistalloc output */