CVS commit: src/sys/uvm

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

Module Name:    src
Committed By:   chs
Date:           Fri May 19 15:30:19 UTC 2017

Modified Files:
        src/sys/uvm: uvm_map.c uvm_mmap.c

Log Message:
make MAP_FIXED mapping operations atomic. fixes PR 52239.
previously, unmapping any entries being replaced was done separately
from entering the new mapping, which allowed another thread doing
a non-MAP_FIXED mapping to allocate the range out from under the
MAP_FIXED thread.


To generate a diff of this commit:
cvs rdiff -u -r1.346 -r1.347 src/sys/uvm/uvm_map.c
cvs rdiff -u -r1.164 -r1.165 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.