git: kernel - Use atomic ops for devstat's ds->busy_count field.
commit 8bd60bc26686ba32daa68a8196296ecbc2d048a3
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date: Wed Jan 19 11:12:47 2011 -0800
kernel - Use atomic ops for devstat's ds->busy_count field.
* Use atomic ops to manage the busy_count field as these functions can
be called MP.
* This should avoid negative busy_count transitions due to MP races on the
field.
Reported-by: Peter Avalos <peter@theshell.com>
Summary of changes:
sys/kern/subr_devstat.c | 11 ++++++-----
1 files changed, 6 insertions(+), 5 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/8bd60bc26686ba32daa68a8196296ecbc2d048a3
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