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o Lock accesses to the active page queue in vm_pageout_scan() and

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vm_pageout_page_stats().
This commit is contained in:
Alan Cox 2002-07-20 18:45:25 +00:00
parent 30b92dec43
commit 48c0444c98
1 changed files with 4 additions and 2 deletions
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6
sys/vm/vm_pageout.c
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@ -961,6 +961,7 @@ vm_pageout_scan(int pass)
cnt.v_inactive_target - cnt.v_inactive_count;
page_shortage += addl_page_shortage;
vm_page_lock_queues();
/*
* Scan the active queue for things we can deactivate. We nominally
* track the per-page activity counter and use it to locate
@ -1045,7 +1046,7 @@ vm_pageout_scan(int pass)
}
m = next;
}
vm_page_unlock_queues();
s = splvm();
/*
@ -1216,7 +1217,7 @@ vm_pageout_page_stats()
return;
s0 = splvm();
vm_page_lock_queues();
pcount = cnt.v_active_count;
fullintervalcount += vm_pageout_stats_interval;
if (fullintervalcount < vm_pageout_full_stats_interval) {
@ -1280,6 +1281,7 @@ vm_pageout_page_stats()
m = next;
}
vm_page_unlock_queues();
splx(s0);
}