hostfs: Use __getname() in follow_link

Be consistent with all other functions in hostfs and just
use __getname().

Signed-off-by: Richard Weinberger <richard@nod.at>

1 files changed, 11 insertions, 14 deletions

diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 7260f162db41..c60d886230ef 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -142,21 +142,19 @@ static char *follow_link(char *link)
         int len, n;
         char *name, *resolved, *end;
 
-        len = 64;
-        while (1) {
+        name = __getname();
+        if (!name) {
                 n = -ENOMEM;
-                name = kmalloc(len, GFP_KERNEL);
-                if (name == NULL)
-                        goto out;
-
-                n = hostfs_do_readlink(link, name, len);
-                if (n < len)
-                        break;
-                len *= 2;
-                kfree(name);
+                goto out_free;
         }
+
+        n = hostfs_do_readlink(link, name, PATH_MAX);
         if (n < 0)
                 goto out_free;
+        else if (n == PATH_MAX) {
+                n = -E2BIG;
+                goto out_free;
+        }
 
         if (*name == '/')
                 return name;
@@ -175,13 +173,12 @@ static char *follow_link(char *link)
         }
 
         sprintf(resolved, "%s%s", link, name);
-        kfree(name);
+        __putname(name);
         kfree(link);
         return resolved;
 
  out_free:
-        kfree(name);
- out:
+        __putname(name);
         return ERR_PTR(n);
 }