diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/jbd.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/jbd.h b/include/linux/jbd.h index 0ffe50ade606..34bf7c8787ec 100644 --- a/include/linux/jbd.h +++ b/include/linux/jbd.h @@ -33,6 +33,15 @@ #define journal_oom_retry 1 +/* + * Define JBD_PARANIOD_IOFAIL to cause a kernel BUG() if ext3 finds + * certain classes of error which can occur due to failed IOs. Under + * normal use we want ext3 to continue after such errors, because + * hardware _can_ fail, but for debugging purposes when running tests on + * known-good hardware we may want to trap these errors. + */ +#undef JBD_PARANOID_IOFAIL + #ifdef CONFIG_JBD_DEBUG /* * Define JBD_EXPENSIVE_CHECKING to enable more expensive internal @@ -257,6 +266,23 @@ void buffer_assertion_failure(struct buffer_head *bh); #define J_ASSERT(assert) do { } while (0) #endif /* JBD_ASSERTIONS */ +#if defined(JBD_PARANOID_IOFAIL) +#define J_EXPECT(expr, why...) J_ASSERT(expr) +#define J_EXPECT_BH(bh, expr, why...) J_ASSERT_BH(bh, expr) +#define J_EXPECT_JH(jh, expr, why...) J_ASSERT_JH(jh, expr) +#else +#define __journal_expect(expr, why...) \ + do { \ + if (!(expr)) { \ + printk(KERN_ERR "EXT3-fs unexpected failure: %s;\n", # expr); \ + printk(KERN_ERR ## why); \ + } \ + } while (0) +#define J_EXPECT(expr, why...) __journal_expect(expr, ## why) +#define J_EXPECT_BH(bh, expr, why...) __journal_expect(expr, ## why) +#define J_EXPECT_JH(jh, expr, why...) __journal_expect(expr, ## why) +#endif + enum jbd_state_bits { BH_JBD /* Has an attached ext3 journal_head */ = BH_PrivateStart, |