Btrfs: add support for asserts

[firefly-linux-kernel-4.4.55.git] / fs / btrfs / ctree.h

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index c90be01cbe674daadbd98c940a29b6e3ddc9899c..1f3fd584e5f4f10c552a1e4209fd6557b2c7f980 100644 (file)
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3814,6 +3814,22 @@ void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...)
 #define btrfs_debug(fs_info, fmt, args...) \
        btrfs_printk(fs_info, KERN_DEBUG fmt, ##args)
 
+#ifdef CONFIG_BTRFS_ASSERT
+
+static inline void assfail(char *expr, char *file, int line)
+{
+       printk(KERN_ERR "BTRFS assertion failed: %s, file: %s, line: %d",
+              expr, file, line);
+       BUG();
+}
+
+#define ASSERT(expr)   \
+       (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
+#else
+#define ASSERT(expr)   ((void)0)
+#endif
+
+#define btrfs_assert()
 __printf(5, 6)
 void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function,
                     unsigned int line, int errno, const char *fmt, ...);