CVSROOT: /cvs
Module name: src
Changes by: guent...@cvs.openbsd.org 2012/04/30 21:43:24
Modified files:
sys/sys : file.h
sys/kern : kern_descrip.c kern_sysctl.c
lib/libkvm : kvm_file2.c
Log message:
Eliminate the f_usecount ref count in struct file; instead of sleeping
at the top of closef() until all in-progress calls finish, just do the
advisory locking bits required of close() by POSIX and let whichever
thread has the last reference do the call to the file's fo_close()
method and the final cleanup.
lots of discussion with deraadt@ and others; worked out with and ok krw@
