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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2011-09-25 17:50:23 +0900
committerJames Morris <jmorris@namei.org>2011-09-26 10:46:20 +1000
commitf9732ea145886786a6f8b0493bc2239e70cbacdb (patch)
treee29b2441cc916a174d7cd0b03cd18986ae545250 /security/tomoyo/common.h
parent778c4a4d60d932c1df6d270dcbc88365823c3963 (diff)
downloadlinux-f9732ea145886786a6f8b0493bc2239e70cbacdb.tar.bz2
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/common.h')
-rw-r--r--security/tomoyo/common.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h
index 1a19ad3e67ea..a0212fbf60fb 100644
--- a/security/tomoyo/common.h
+++ b/security/tomoyo/common.h
@@ -52,6 +52,9 @@
#define TOMOYO_EXEC_TMPSIZE 4096
+/* Garbage collector is trying to kfree() this element. */
+#define TOMOYO_GC_IN_PROGRESS -1
+
/* Profile number is an integer between 0 and 255. */
#define TOMOYO_MAX_PROFILES 256
@@ -398,7 +401,7 @@ enum tomoyo_pref_index {
/* Common header for holding ACL entries. */
struct tomoyo_acl_head {
struct list_head list;
- bool is_deleted;
+ s8 is_deleted; /* true or false or TOMOYO_GC_IN_PROGRESS */
} __packed;
/* Common header for shared entries. */
@@ -665,7 +668,7 @@ struct tomoyo_condition {
struct tomoyo_acl_info {
struct list_head list;
struct tomoyo_condition *cond; /* Maybe NULL. */
- bool is_deleted;
+ s8 is_deleted; /* true or false or TOMOYO_GC_IN_PROGRESS */
u8 type; /* One of values in "enum tomoyo_acl_entry_type_index". */
} __packed;