Patch-ID# 100645-01
Keywords: exit hang sun4m swapon swap
Synopsis: SunOS 4.1.2, 4.1.3: system may hang due to large process exit or large swap
Date: Jun/10/92

Solaris Release: 1.0.1 1.1 

SunOS Release: 4.1.2 4.1.3 4.1.3C

Unbundled Product: 

Unbundled Release: 

Topic: temporary system hangs on exit or swap operations

BugId's fixed with this patch: 1091185 1087492 1090369

Relevant Architecture: sparc
    NOTE: sun4, sun4c, sun4m

Patches which may conflict with this patch: 

Obsoleted by:  
	NOTE:4.1.3_U1

Files included with this patch: 
 vm_swap.o

Problem Description: 

	It can take large processes an unreasonably long time to exit;
	this patch minimizes exit times for large processes.  It also
	fixes a problem with using swapon for very large swap files.


Patch Installation Instructions:
-------------------------------
       (1) Save the original version of vm_swap.o

	    mv /sys/`arch -k`/OBJ/vm_swap.o /sys/`arch -k`/OBJ/vm_swap.o.FCS
         
       (2) Copy the patched file to the OBJ directory

	    cp `arch -k`/vm_swap.o /sys/`arch -k`/OBJ/vm_swap.o

       (3) build, install, and boot a new kernel.  Please refer to the
    	   System and Network Administration Manual.


Special Install Instructions: 
-----------------------------
None.
