Date: Sat, 8 Oct 2011 18:29:30 +0000 (UTC) From: Alan Cox <alc@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r226163 - head/sys/kern Message-ID: <201110081829.p98ITUMB073712@svn.freebsd.org>
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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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