CVS commit: src/sys/kern

["Dennis Ferguson" <dennis%netbsd.org@localhost>]

Module Name:    src
Committed By:   dennis
Date:           Fri Jan 16 20:10:25 UTC 2015

Modified Files:
        src/sys/kern: vfs_cache.c

Log Message:
Add a membar_datadep_consumer() before dereferencing the pointer
to a cache entry in cache_lookup_entry().  The entries are being
added to the list it is looking at without mutually-exclusive locking,
so this is necessary to keep some Alphas from seeing stale data
when the pointer is newly-updated.

XXX this is doing lockless adds to a list maintained with LIST_* macros.


To generate a diff of this commit:
cvs rdiff -u -r1.104 -r1.105 src/sys/kern/vfs_cache.c

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