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>
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index d00c5af..01e07f2 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -826,12 +826,9 @@
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;