locks: fix locks_mandatory_locked to respect file-private locks

[deliverable/linux.git] / fs / locks.c

diff --git a/fs/locks.c b/fs/locks.c
index 09d6c8c33c815d168b5bbaf5a36619a21ccf322e..d82c51c4fcd22d0a44b78f3274676c25a8bbbdff 100644 (file)
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1155,13 +1155,14 @@ EXPORT_SYMBOL(posix_lock_file_wait);
 
 /**
  * locks_mandatory_locked - Check for an active lock
- * @inode: the file to check
+ * @file: the file to check
  *
  * Searches the inode's list of locks to find any POSIX locks which conflict.
  * This function is called from locks_verify_locked() only.
  */
-int locks_mandatory_locked(struct inode *inode)
+int locks_mandatory_locked(struct file *file)
 {
+       struct inode *inode = file_inode(file);
        fl_owner_t owner = current->files;
        struct file_lock *fl;
 
@@ -1172,7 +1173,7 @@ int locks_mandatory_locked(struct inode *inode)
        for (fl = inode->i_flock; fl != NULL; fl = fl->fl_next) {
                if (!IS_POSIX(fl))
                        continue;
-               if (fl->fl_owner != owner)
+               if (fl->fl_owner != owner && fl->fl_owner != (fl_owner_t)file)
                        break;
        }
        spin_unlock(&inode->i_lock);