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CVS commit: src/sys/uvm

Module Name:    src
Committed By:   hannken
Date:           Fri Jun 17 09:50:52 UTC 2011

Modified Files:
        src/sys/uvm: uvm_bio.c

Log Message:
When ubc_alloc() reuses a cached mapping window remove the object from
the lists AFTER clearing its mapping.

Removes a race where uvm_obj_destroy() sees an empty uo_ubc list and
destroys the object before ubc_alloc() gets the objects lock to clear
the mapping.

To generate a diff of this commit:
cvs rdiff -u -r1.74 -r1.75 src/sys/uvm/uvm_bio.c

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

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