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Fix the handling of an empty kmem map by sysctl_kmem_map_free(). In

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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
This commit is contained in:
Alan Cox 2011-10-08 18:29:30 +00:00
parent 04a382563d
commit 1549ed03ff
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=226163
1 changed files with 2 additions and 2 deletions
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4
sys/kern/kern_malloc.c
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@ -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));
}