VFS: Remove redundant open-coded mode bit check in prepare_binfmt().

The check in prepare_binfmt() for inode->i_mode & 0111 is redundant,
since open_exec() will already have done that.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
(cherry picked from 822dec482ced07af32c378cd936d77345786572b commit)

fs/exec.c

@@ -922,12 +922,6 @@ int prepare_binprm(struct linux_binprm *bprm)
 	int retval;
 
 	mode = inode->i_mode;
-	/*
-	 * Check execute perms again - if the caller has CAP_DAC_OVERRIDE,
-	 * generic_permission lets a non-executable through
-	 */
-	if (!(mode & 0111))	/* with at least _one_ execute bit set */
-		return -EACCES;
 	if (bprm->file->f_op == NULL)
 		return -EACCES;