svn commit: r326516 - stable/11/sys/vm
Konstantin Belousov
kib at FreeBSD.org
Mon Dec 4 09:47:44 UTC 2017
Author: kib
Date: Mon Dec 4 09:47:42 2017
New Revision: 326516
URL: https://svnweb.freebsd.org/changeset/base/326516
Log:
MFC r326424:
Add comment for vm_map_find_min().
Modified:
stable/11/sys/vm/vm_map.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/vm/vm_map.c
==============================================================================
--- stable/11/sys/vm/vm_map.c Mon Dec 4 09:46:08 2017 (r326515)
+++ stable/11/sys/vm/vm_map.c Mon Dec 4 09:47:42 2017 (r326516)
@@ -1556,6 +1556,18 @@ again:
return (result);
}
+/*
+ * vm_map_find_min() is a variant of vm_map_find() that takes an
+ * additional parameter (min_addr) and treats the given address
+ * (*addr) differently. Specifically, it treats *addr as a hint
+ * and not as the minimum address where the mapping is created.
+ *
+ * This function works in two phases. First, it tries to
+ * allocate above the hint. If that fails and the hint is
+ * greater than min_addr, it performs a second pass, replacing
+ * the hint with min_addr as the minimum address for the
+ * allocation.
+ */
int
vm_map_find_min(vm_map_t map, vm_object_t object, vm_ooffset_t offset,
vm_offset_t *addr, vm_size_t length, vm_offset_t min_addr,
More information about the svn-src-stable
mailing list