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author | Tejun Heo <tj@kernel.org> | 2008-09-24 21:22:23 (GMT) |
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committer | Eric Van Hensbergen <ericvh@ericvh-desktop.austin.ibm.com> | 2008-09-24 21:22:23 (GMT) |
commit | 72029fe85d8d060b3f966f2dbc36b3c75b5a6532 (patch) | |
tree | ef8948240b0aff2a366136a8303afc70e6c84da8 /include/net/9p/transport.h | |
parent | 72d31053f62c4bc464c2783974926969614a8649 (diff) | |
download | linux-fsl-qoriq-72029fe85d8d060b3f966f2dbc36b3c75b5a6532.tar.xz |
9p: implement proper trans module refcounting and unregistration
9p trans modules aren't refcounted nor were they unregistered
properly. Fix it.
* Add 9p_trans_module->owner and reference the module on each trans
instance creation and put it on destruction.
* Protect v9fs_trans_list with a spinlock. This isn't strictly
necessary as the list is manipulated only during module loading /
unloading but it's a good idea to make the API safe.
* Unregister trans modules when the corresponding module is being
unloaded.
* While at it, kill unnecessary EXPORT_SYMBOL on p9_trans_fd_init().
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to 'include/net/9p/transport.h')
-rw-r--r-- | include/net/9p/transport.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/include/net/9p/transport.h b/include/net/9p/transport.h index 0db3a40..3ca7371 100644 --- a/include/net/9p/transport.h +++ b/include/net/9p/transport.h @@ -26,6 +26,8 @@ #ifndef NET_9P_TRANSPORT_H #define NET_9P_TRANSPORT_H +#include <linux/module.h> + /** * enum p9_trans_status - different states of underlying transports * @Connected: transport is connected and healthy @@ -91,9 +93,12 @@ struct p9_trans_module { int maxsize; /* max message size of transport */ int def; /* this transport should be default */ struct p9_trans * (*create)(const char *, char *, int, unsigned char); + struct module *owner; }; void v9fs_register_trans(struct p9_trans_module *m); -struct p9_trans_module *v9fs_match_trans(const substring_t *name); -struct p9_trans_module *v9fs_default_trans(void); +void v9fs_unregister_trans(struct p9_trans_module *m); +struct p9_trans_module *v9fs_get_trans_by_name(const substring_t *name); +struct p9_trans_module *v9fs_get_default_trans(void); +void v9fs_put_trans(struct p9_trans_module *m); #endif /* NET_9P_TRANSPORT_H */ |