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author | Satyam Sharma <ssatyam@cse.iitk.ac.in> | 2007-07-04 11:07:16 (GMT) |
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committer | Mark Fasheh <mark.fasheh@oracle.com> | 2007-07-11 00:02:31 (GMT) |
commit | 3fe6c5ce1176cf661dbe71fc43b627c1a742a89a (patch) | |
tree | be94563e2ba49f7116e866e57253b5ed82fb85ee /include/linux | |
parent | 9b1d9aa4e9c5cafe73b9df21d758b50b5d75264d (diff) | |
download | linux-fsl-qoriq-3fe6c5ce1176cf661dbe71fc43b627c1a742a89a.tar.xz |
[PATCH] configfs+dlm: Rename config_group_find_obj and state semantics clearly
Configfs being based upon sysfs code, config_group_find_obj() is probably
so named because of the similar kset_find_obj() in sysfs. However,
"kobject"s in sysfs become "config_item"s in configfs, so let's call it
config_group_find_item() instead, for sake of uniformity, and make
corresponding change in the users of this function.
BTW a crucial difference between kset_find_obj and config_group_find_item
is in locking expectations. kset_find_obj does its locking by itself, but
config_group_find_item expects the *caller* to do the locking. The reason
for this: kset's have their own locks, config_group's don't but instead
rely on the subsystem mutex. And, subsystem needn't necessarily be around
when config_group_find_item() is called.
So let's state these locking semantics explicitly, and rectify the comment,
otherwise bugs could continue to occur in future, as they did in the past
(refer commit d82b8191e238 in gfs2-2.6-fixes.git).
[ I also took the opportunity to fix some bad whitespace and
double-empty lines. --Joel ]
[ Conflict in fs/dlm/config.c with commit
3168b0780d06ace875696f8a648d04d6089654e5 manually resolved. --Mark ]
Signed-off-by: Satyam Sharma <ssatyam@cse.iitk.ac.in>
Cc: David Teigland <teigland@redhat.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/configfs.h | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/include/linux/configfs.h b/include/linux/configfs.h index def7c83..bbb1b6c 100644 --- a/include/linux/configfs.h +++ b/include/linux/configfs.h @@ -86,12 +86,10 @@ struct config_item_type { struct configfs_attribute **ct_attrs; }; - /** * group - a group of config_items of a specific type, belonging * to a specific subsystem. */ - struct config_group { struct config_item cg_item; struct list_head cg_children; @@ -99,13 +97,11 @@ struct config_group { struct config_group **default_groups; }; - extern void config_group_init(struct config_group *group); extern void config_group_init_type_name(struct config_group *group, const char *name, struct config_item_type *type); - static inline struct config_group *to_config_group(struct config_item *item) { return item ? container_of(item,struct config_group,cg_item) : NULL; @@ -121,7 +117,8 @@ static inline void config_group_put(struct config_group *group) config_item_put(&group->cg_item); } -extern struct config_item *config_group_find_obj(struct config_group *, const char *); +extern struct config_item *config_group_find_item(struct config_group *, + const char *); struct configfs_attribute { |