[PATCH] proc: skip branch in /proc/*/* lookup

[Alexey Dobriyan]

Code is structured like this:

        for ( ... p < last; p++) {
                if (memcmp == 0)
                        break;
        }
        if (p >= last)
                ERROR
        OK

gcc doesn't see that if if lookup succeeds than post loop branch will
never be taken and skip it.

Signed-off-by: Alexey Dobriyan <adobri...@gmail.com>
---

 fs/proc/base.c |    9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2485,14 +2485,11 @@ static struct dentry *proc_pident_lookup(struct inode 
*dir,
        for (p = ents; p < last; p++) {
                if (p->len != dentry->d_name.len)
                        continue;
-               if (!memcmp(dentry->d_name.name, p->name, p->len))
+               if (!memcmp(dentry->d_name.name, p->name, p->len)) {
+                       error = proc_pident_instantiate(dir, dentry, task, p);
                        break;
+               }
        }
-       if (p >= last)
-               goto out;
-
-       error = proc_pident_instantiate(dir, dentry, task, p);
-out:
        put_task_struct(task);
 out_no_task:
        return ERR_PTR(error);