Re: [PATCH 1/5] pid: Implement task references.

From: Suleiman Souhlal
Date: Sun Jan 29 2006 - 03:45:22 EST


Eric W. Biederman wrote:

Just a few typos in comments.

@@ -17,6 +17,8 @@ struct pid
struct hlist_node pid_chain;
/* list of pids with the same nr, only one of them is in the hash */
struct list_head pid_list;
+ /* Does a weak references of this type exsit to the task struct? */
+ struct task_ref *ref;

exsit -> exist

+/* Note to read a usable value task value from struct task_ref
+ * the tasklist_lock must be held. The atomic property of single
+ * word reads will keep any vaule you read consistent but it doesn't

vaule -> value

+ * protect you from the race of the task exiting on another cpu and
+ * having it's task_struct freed or reused. Holding the tasklist_lock
+ * prevents the task from going away as you derference the task pointer.

derference -> dereference

-- Suleiman
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