Remove an outdated header comment for vm_page.c.

The listed rules were incomplete and outdated.  There is a much more
comprehensive comment in vm_page.h.

Reviewed by:	alc, kib
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D20503
This commit is contained in:
Mark Johnston 2019-06-04 18:38:27 +00:00
parent b5f3ad3ad1
commit 2d2748710a
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=348660

View File

@ -62,23 +62,6 @@
* rights to redistribute these changes.
*/
/*
* GENERAL RULES ON VM_PAGE MANIPULATION
*
* - A page queue lock is required when adding or removing a page from a
* page queue regardless of other locks or the busy state of a page.
*
* * In general, no thread besides the page daemon can acquire or
* hold more than one page queue lock at a time.
*
* * The page daemon can acquire and hold any pair of page queue
* locks in any order.
*
* - The object lock is required when inserting or removing
* pages from an object (vm_page_insert() or vm_page_remove()).
*
*/
/*
* Resident memory management module.
*/