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From: Andrey Zonov <zont@FreeBSD.org>
Date: Wed, 29 Aug 2012 11:23:59 +0000 (UTC)
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Subject: svn commit: r239818 - head/sys/vm
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Author: zont
Date: Wed Aug 29 11:23:59 2012
New Revision: 239818
URL: http://svn.freebsd.org/changeset/base/239818

Log:
  - Don't take an account of locked memory for current process in vslock(9).
  
  There are two consumers of vslock(9): sysctl code and drm driver.  These
  consumers are using locked memory as transient memory, it doesn't belong
  to a process's memory.
  
  Suggested by:	avg
  Reviewed by:	alc
  Approved by:	kib (mentor)
  MFC after:	2 weeks

Modified:
  head/sys/vm/vm_glue.c

Modified: head/sys/vm/vm_glue.c
==============================================================================
--- head/sys/vm/vm_glue.c	Wed Aug 29 11:23:20 2012	(r239817)
+++ head/sys/vm/vm_glue.c	Wed Aug 29 11:23:59 2012	(r239818)
@@ -183,7 +183,6 @@ int
 vslock(void *addr, size_t len)
 {
 	vm_offset_t end, last, start;
-	unsigned long nsize;
 	vm_size_t npages;
 	int error;
 
@@ -195,18 +194,6 @@ vslock(void *addr, size_t len)
 	npages = atop(end - start);
 	if (npages > vm_page_max_wired)
 		return (ENOMEM);
-	PROC_LOCK(curproc);
-	nsize = ptoa(npages +
-	    pmap_wired_count(vm_map_pmap(&curproc->p_vmspace->vm_map)));
-	if (nsize > lim_cur(curproc, RLIMIT_MEMLOCK)) {
-		PROC_UNLOCK(curproc);
-		return (ENOMEM);
-	}
-	if (racct_set(curproc, RACCT_MEMLOCK, nsize)) {
-		PROC_UNLOCK(curproc);
-		return (ENOMEM);
-	}
-	PROC_UNLOCK(curproc);
 #if 0
 	/*
 	 * XXX - not yet
@@ -222,14 +209,6 @@ vslock(void *addr, size_t len)
 #endif
 	error = vm_map_wire(&curproc->p_vmspace->vm_map, start, end,
 	    VM_MAP_WIRE_SYSTEM | VM_MAP_WIRE_NOHOLES);
-#ifdef RACCT
-	if (error != KERN_SUCCESS) {
-		PROC_LOCK(curproc);
-		racct_set(curproc, RACCT_MEMLOCK, 
-		    ptoa(pmap_wired_count(vm_map_pmap(&curproc->p_vmspace->vm_map))));
-		PROC_UNLOCK(curproc);
-	}
-#endif
 	/*
 	 * Return EFAULT on error to match copy{in,out}() behaviour
 	 * rather than returning ENOMEM like mlock() would.