CVS commit: src

["Chuck Silvers" <chs%netbsd.org@localhost>]

Module Name:    src
Committed By:   chs
Date:           Sat May 20 07:27:15 UTC 2017

Modified Files:
        src/share/man/man9: uvm_map.9
        src/sys/uvm: uvm_extern.h uvm_map.c uvm_mmap.c

Log Message:
MAP_FIXED means something different for mremap() than it does for mmap(),
so we cannot use UVM_FLAG_FIXED to specify both behaviors.
keep UVM_FLAG_FIXED with its earlier meaning (prior to my previous change)
of whether to use uvm_map_findspace() to locate space for the new mapping or
to use the hint address that the caller passed in, and add a new flag
UVM_FLAG_UNMAP to indicate that any existing entries in the range should be
unmapped as part of creating the new mapping.  the new UVM_FLAG_UNMAP flag
may only be used if UVM_FLAG_FIXED is also specified.


To generate a diff of this commit:
cvs rdiff -u -r1.8 -r1.9 src/share/man/man9/uvm_map.9
cvs rdiff -u -r1.205 -r1.206 src/sys/uvm/uvm_extern.h
cvs rdiff -u -r1.348 -r1.349 src/sys/uvm/uvm_map.c
cvs rdiff -u -r1.165 -r1.166 src/sys/uvm/uvm_mmap.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.