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CVS commit: src/sys/kern
Module Name: src
Committed By: hannken
Date: Mon Jan 21 09:14:01 UTC 2013
Replace the rwlock based implementation with passive serialization
from pserialize(9) and mutex / condvar.
The fast paths (fstrans_start/fstrans_done on a file system not
suspended or suspending and fscow_run with no change pending) now
run without locks or other atomic operations. Suspension and cow
handler insertion and removal is done with mutex / condvars.
The API remains unchanged.
To generate a diff of this commit:
cvs rdiff -u -r1.25 -r1.26 src/sys/kern/vfs_trans.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
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