Author: alc
Date: Sat Oct 8 18:29:30 2011
New Revision: 226163
URL: http://svn.freebsd.org/changeset/base/226163
Log:
Fix the handling of an empty kmem map by sysctl_kmem_map_free(). In
the unlikely event that sysctl_kmem_map_free() was performed on an
empty kmem map, it would incorrectly report the free space as zero.
Discussed with: avg
MFC after: 1 week
Modified:
head/sys/kern/kern_malloc.c
Modified: head/sys/kern/kern_malloc.c
==============================================================================
--- head/sys/kern/kern_malloc.c Sat Oct 8 18:25:01 2011 (r226162)
+++ head/sys/kern/kern_malloc.c Sat Oct 8 18:29:30 2011 (r226163)
@@ -265,8 +265,8 @@ sysctl_kmem_map_free(SYSCTL_HANDLER_ARGS
u_long size;
vm_map_lock_read(kmem_map);
- size = kmem_map->root != NULL ?
- kmem_map->root->max_free : kmem_map->size;
+ size = kmem_map->root != NULL ? kmem_map->root->max_free :
+ kmem_map->max_offset - kmem_map->min_offset;
vm_map_unlock_read(kmem_map);
return (sysctl_handle_long(oidp, &size, 0, req));
}
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