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| author | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2011-09-25 17:50:23 +0900 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2011-09-26 10:46:20 +1000 |
| commit | f9732ea145886786a6f8b0493bc2239e70cbacdb (patch) | |
| tree | e29b2441cc916a174d7cd0b03cd18986ae545250 /security/tomoyo/memory.c | |
| parent | 778c4a4d60d932c1df6d270dcbc88365823c3963 (diff) | |
| download | linux-f9732ea145886786a6f8b0493bc2239e70cbacdb.tar.gz linux-f9732ea145886786a6f8b0493bc2239e70cbacdb.tar.bz2 linux-f9732ea145886786a6f8b0493bc2239e70cbacdb.zip | |
TOMOYO: Simplify garbage collector.
When TOMOYO started using garbage collector at commit 847b173e "TOMOYO: Add
garbage collector.", we waited for close() before kfree(). Thus, elements to be
kfree()d were queued up using tomoyo_gc_list list.
But it turned out that tomoyo_element_linked_by_gc() tends to choke garbage
collector when certain pattern of entries are queued.
Since garbage collector is no longer waiting for close() since commit 2e503bbb
"TOMOYO: Fix lockdep warning.", we can remove tomoyo_gc_list list and
tomoyo_element_linked_by_gc() by doing sequential processing.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/tomoyo/memory.c')
| -rw-r--r-- | security/tomoyo/memory.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/security/tomoyo/memory.c b/security/tomoyo/memory.c index 7a56051146c2..277b9ade4408 100644 --- a/security/tomoyo/memory.c +++ b/security/tomoyo/memory.c @@ -123,7 +123,8 @@ struct tomoyo_group *tomoyo_get_group(struct tomoyo_acl_param *param, goto out; list = ¶m->ns->group_list[idx]; list_for_each_entry(group, list, head.list) { - if (e.group_name != group->group_name) + if (e.group_name != group->group_name || + atomic_read(&group->head.users) == TOMOYO_GC_IN_PROGRESS) continue; atomic_inc(&group->head.users); found = true; @@ -175,7 +176,8 @@ const struct tomoyo_path_info *tomoyo_get_name(const char *name) if (mutex_lock_interruptible(&tomoyo_policy_lock)) return NULL; list_for_each_entry(ptr, head, head.list) { - if (hash != ptr->entry.hash || strcmp(name, ptr->entry.name)) + if (hash != ptr->entry.hash || strcmp(name, ptr->entry.name) || + atomic_read(&ptr->head.users) == TOMOYO_GC_IN_PROGRESS) continue; atomic_inc(&ptr->head.users); goto out; |