Author: kib
Date: Mon Jan 8 13:19:15 2018
New Revision: 327695
URL: https://svnweb.freebsd.org/changeset/base/327695
Log:
MFC r327468:
Do not let vm_daemon run unbounded.
Modified:
stable/11/sys/vm/vm_swapout.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/vm/vm_swapout.c
==============================================================================
--- stable/11/sys/vm/vm_swapout.c Mon Jan 8 12:56:53 2018
(r327694)
+++ stable/11/sys/vm/vm_swapout.c Mon Jan 8 13:19:15 2018
(r327695)
@@ -201,6 +201,8 @@ vm_swapout_object_deactivate_pages(pmap_t pmap, vm_obj
TAILQ_FOREACH(p, &object->memq, listq) {
if (pmap_resident_count(pmap) <= desired)
goto unlock_return;
+ if (should_yield())
+ goto unlock_return;
if (vm_page_busied(p))
continue;
PCPU_INC(cnt.v_pdpages);
@@ -514,8 +516,10 @@ again:
PRELE(p);
}
sx_sunlock(&allproc_lock);
- if (tryagain != 0 && attempts <= 10)
+ if (tryagain != 0 && attempts <= 10) {
+ maybe_yield();
goto again;
+ }
}
}
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