[PATCH] VFS: Ensure that all the on-stack struct file_lock call fl_release_private

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/locks.c b/fs/locks.c
index 3fa6a7ce57a7390a7faf6a23effbabe9013720f3..a0bc03495bd44e23bfa89deb6c492ee2a9ccfcb8 100644 (file)
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1548,6 +1548,8 @@ int fcntl_getlk(struct file *filp, struct flock __user *l)
 
        if (filp->f_op && filp->f_op->lock) {
                error = filp->f_op->lock(filp, F_GETLK, &file_lock);
+               if (file_lock.fl_ops && file_lock.fl_ops->fl_release_private)
+                       file_lock.fl_ops->fl_release_private(&file_lock);
                if (error < 0)
                        goto out;
                else
@@ -1690,6 +1692,8 @@ int fcntl_getlk64(struct file *filp, struct flock64 __user *l)
 
        if (filp->f_op && filp->f_op->lock) {
                error = filp->f_op->lock(filp, F_GETLK, &file_lock);
+               if (file_lock.fl_ops && file_lock.fl_ops->fl_release_private)
+                       file_lock.fl_ops->fl_release_private(&file_lock);
                if (error < 0)
                        goto out;
                else
@@ -1873,6 +1877,8 @@ void locks_remove_flock(struct file *filp)
                        .fl_end = OFFSET_MAX,
                };
                filp->f_op->flock(filp, F_SETLKW, &fl);
+               if (fl.fl_ops && fl.fl_ops->fl_release_private)
+                       fl.fl_ops->fl_release_private(&fl);
        }
 
        lock_kernel();