[PATCH] proc: fix incorrect pde_is_permanent check

[Colin King]

From: Colin Ian King <colin.k...@canonical.com>

Currently the pde_is_permanent check is being run on root multiple times
rather than on the next proc directory entry. This looks like a copy-paste
error.  Fix this by replacing root with next.

Addresses-Coverity: ("Copy-paste error")
Fixes: d919b33dafb3 ("proc: faster open/read/close with "permanent" files")
Signed-off-by: Colin Ian King <colin.k...@canonical.com>
---
 fs/proc/generic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index bc86aa87cc41..5600da30e289 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -756,7 +756,7 @@ int remove_proc_subtree(const char *name, struct 
proc_dir_entry *parent)
        while (1) {
                next = pde_subdir_first(de);
                if (next) {
-                       if (unlikely(pde_is_permanent(root))) {
+                       if (unlikely(pde_is_permanent(next))) {
                                write_unlock(&proc_subdir_lock);
                                WARN(1, "removing permanent /proc entry 
'%s/%s'",
                                        next->parent->name, next->name);
-- 
2.30.2