Commit 3740a20c authored Jan 12, 2011 by Alexey Dobriyan Committed by Linus Torvalds Jan 13, 2011

proc: less LOCK/UNLOCK in remove_proc_entry()



For the common case where a proc entry is being removed and nobody is in
the process of using it, save a LOCK/UNLOCK pair.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent a6fc86d2

fs/proc/generic.c

+1 −4

Original line number	Diff line number	Diff line
		@@ -826,12 +826,9 @@ void remove_proc_entry(const char name, struct proc_dir_entry parent)

		wait_for_completion(de->pde_unload_completion);

		goto continue_removing;
		spin_lock(&de->pde_unload_lock);
		}
		spin_unlock(&de->pde_unload_lock);

		continue_removing:
		spin_lock(&de->pde_unload_lock);
		while (!list_empty(&de->pde_openers)) {
		struct pde_opener *pdeo;