acct: check FMODE_CAN_WRITE

it's not calling ->write() directly anymore.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/kernel/acct.c b/kernel/acct.c
index e6c10d1..74963d1 100644 (file)
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -213,7 +213,7 @@ static int acct_on(struct filename *pathname)
                return -EACCES;
        }
 
-       if (!file->f_op->write) {
+       if (!(file->f_mode & FMODE_CAN_WRITE)) {
                kfree(acct);
                filp_close(file, NULL);
                return -EIO;