CVS commit: syssrc

[Jason R Thorpe <thorpej%netbsd.org@localhost>]

Module Name:    syssrc
Committed By:   thorpej
Date:           Wed Jun  2 21:23:09 UTC 1999

Modified Files:
        syssrc/sys/uvm: uvm_map.c

Log Message:
Clean up the locking mess in uvm_map_pageable() a little... Most importantly,
don't unlock a kernel map (!!!) and then relock it later; a recursive lock,
as it used in the user map case, is fine.  Also, don't change map entries
while only holding a read lock on the map.  Instead, if we fail to wire
a page, clear recursive locking, and upgrade back to a write lock before
dropping the wiring count on the remaining map entries.


To generate a diff of this commit:
cvs rdiff -r1.50 -r1.51 syssrc/sys/uvm/uvm_map.c

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