git: DEVFS - fix possible panic on devfs_release_ops
commit 176de024db39b6b6296d3c52d83a9a696cbb8b9f
Author: Alex Hornung <ahornung@gmail.com>
Date: Tue Aug 18 23:24:42 2009 +0100
DEVFS - fix possible panic on devfs_release_ops
* under certain conditions on unloading a module it could happen that
the memory containing the dev_ops was released before devfs_release_
ops could happen due to the asynchronous nature of destroy_dev.
Fix this saving only a pointer to the ops and not using it to store
anything but rather use a local tailq for reference counting the
dev_ops.
Summary of changes:
sys/sys/devfs.h | 7 ++++++
sys/vfs/devfs/devfs_core.c | 50 ++++++++++++++++++++++++++++++++++++-------
2 files changed, 49 insertions(+), 8 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/176de024db39b6b6296d3c52d83a9a696cbb8b9f
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