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Clarify vm_map_protect max_protection downgrade

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As reported in review D20709 by brooks calling vm_map_protect to set a
new max_protection value downgrades existing mappings if necessary (as
opposed to returning an error).

Reported by:	brooks
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Ed Maste 2019-06-20 18:30:19 +00:00
parent 74a1b66cf4
commit cb53797473
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=349241
1 changed files with 6 additions and 1 deletions
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7
share/man/man9/vm_map_protect.9
View File

@ -64,7 +64,12 @@ is TRUE,
is treated as the new
.Va max_protection
setting for each underlying entry.
Otherwise, only the
Protection bits not included
.Fa new_prot
will be cleared from existing entries.
If
.Fa set_max
is FALSE only the
.Va protection
field is affected.
.Pp