procfs: don't need a PATH_MAX allocation to hold a string representation of an int

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 3 insertions, 2 deletions

diff --git a/fs/proc/base.c b/fs/proc/base.c
index ef5c84be66f9..144a96732dd7 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2258,7 +2258,8 @@ static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
         pid_t tgid = task_tgid_nr_ns(current, ns);
         char *name = ERR_PTR(-ENOENT);
         if (tgid) {
-                name = __getname();
+                /* 11 for max length of signed int in decimal + NULL term */
+                name = kmalloc(12, GFP_KERNEL);
                 if (!name)
                         name = ERR_PTR(-ENOMEM);
                 else
@@ -2273,7 +2274,7 @@ static void proc_self_put_link(struct dentry *dentry, struct nameidata *nd,
 {
         char *s = nd_get_link(nd);
         if (!IS_ERR(s))
-                __putname(s);
+                kfree(s);
 }
 
 static const struct inode_operations proc_self_inode_operations = {