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livepatch: Remove custom kobject state handling

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kobject_init() always succeeds and sets the reference count to 1.
It allows to always free the structures via kobject_put() and
the related release callback.

Note that the custom kobject state handling was used only
because we did not know that kobject_put() can and actually
should get called even when kobject_init_and_add() fails.

The patch should not change the existing behavior.

Suggested-by: "Tobin C. Harding" <tobin@kernel.org>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Acked-by: Joe Lawrence <joe.lawrence@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Petr Mladek 2019-05-03 15:26:24 +02:00 • committed by Jiri Kosina
parent 31adf2308f
commit 4d141ab341
2 changed files with 17 additions and 42 deletions
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3
include/linux/livepatch.h
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@ -86,7 +86,6 @@ struct klp_func {
struct list_head node;
struct list_head stack_node;
unsigned long old_size, new_size;
bool kobj_added;
bool nop;
bool patched;
bool transition;
@ -141,7 +140,6 @@ struct klp_object {
struct list_head func_list;
struct list_head node;
struct module *mod;
bool kobj_added;
bool dynamic;
bool patched;
};
@ -170,7 +168,6 @@ struct klp_patch {
struct list_head list;
struct kobject kobj;
struct list_head obj_list;
bool kobj_added;
bool enabled;
bool forced;
struct work_struct free_work;