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Fix the act_scan_laundry_weight mechanism.

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r292392 modified the active queue scan to weigh clean pages differently
from dirty pages when attempting to meet the inactive queue target. When
r306706 was merged into the PQ_LAUNDRY branch, this mechanism was
broken. Fix it by scalaing the correct page shortage variable.

Reviewed by:	alc, kib
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D13423
This commit is contained in:
Mark Johnston 2017-12-09 15:47:26 +00:00
parent b6fbf003e1
commit 82e2d06a27
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=326732
1 changed files with 1 additions and 1 deletions
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sys/vm/vm_pageout.c
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@ -1393,7 +1393,7 @@ vm_pageout_scan(struct vm_domain *vmd, int pass)
inactq_shortage = vm_cnt.v_inactive_target - (vm_cnt.v_inactive_count +
vm_cnt.v_laundry_count / act_scan_laundry_weight) +
vm_paging_target() + deficit + addl_page_shortage;
page_shortage *= act_scan_laundry_weight;
inactq_shortage *= act_scan_laundry_weight;
pq = &vmd->vmd_pagequeues[PQ_ACTIVE];
vm_pagequeue_lock(pq);