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-rw-r--r--fs/locks.c25
1 files changed, 14 insertions, 11 deletions
diff --git a/fs/locks.c b/fs/locks.c
index 2c2d4f5022a7..7dd4defb4d8d 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1022,18 +1022,21 @@ static int __posix_lock_file(struct inode *inode, struct file_lock *request, str
locks_delete_lock(before);
continue;
}
- /* Replace the old lock with the new one.
- * Wake up anybody waiting for the old one,
- * as the change in lock type might satisfy
- * their needs.
+ /*
+ * Replace the old lock with new_fl, and
+ * remove the old one. It's safe to do the
+ * insert here since we know that we won't be
+ * using new_fl later, and that the lock is
+ * just replacing an existing lock.
*/
- locks_wake_up_blocks(fl);
- fl->fl_start = request->fl_start;
- fl->fl_end = request->fl_end;
- fl->fl_type = request->fl_type;
- locks_release_private(fl);
- locks_copy_private(fl, request);
- request = fl;
+ error = -ENOLCK;
+ if (!new_fl)
+ goto out;
+ locks_copy_lock(new_fl, request);
+ request = new_fl;
+ new_fl = NULL;
+ locks_delete_lock(before);
+ locks_insert_lock(before, request);
added = true;
}
}