Some updates to vm_map(9).
Remove min_offset, max_offset. Mention the busy flag. Prodded by: https://reviews.freebsd.org/D16105. Sponsored by: The FreeBSD Foundation MFC after: 1 week
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=337236
@ -25,7 +25,7 @@
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.\"
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.\" $FreeBSD$
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.\"
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.Dd July 9, 2011
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.Dd July 3, 2018
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.Dt VM_MAP 9
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.Os
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.Sh NAME
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@ -62,8 +62,7 @@ struct vm_map {
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vm_flags_t flags;
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vm_map_entry_t root;
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pmap_t pmap;
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#define min_offset header.start
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#define max_offset header.end
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int busy;
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};
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.Ed
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.Pp
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@ -99,29 +98,16 @@ Root node of a binary search tree used for fast lookup of map entries.
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.It Va pmap
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Pointer to the underlying physical map with which this virtual map
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is associated.
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.It Va min_offset
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The minimum
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.Vt vm_offset_t
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in this map.
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Programs should never use
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.Va header.start
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or
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.Va header.end
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directly, use
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.Va min_offset
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and
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.Va max_offset
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instead.
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.It Va max_offset
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The maximum
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.Vt vm_offset_t
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in this map.
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.It Va busy
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Map busy counter, prevents forks.
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.El
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.Pp
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There is one possible map flag:
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Possible map flags:
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.Bl -tag -width ".Dv MAP_PREFAULT_MADVISE"
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.It Dv MAP_WIREFUTURE
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Wire all future pages in this map.
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.It Dv MAP_BUSY_WAKEUP
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There are waiters for the map busy status.
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.El
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.Pp
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The following flags can be passed to
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