readv/writev: do the same MAX_RW_COUNT truncation that read/write does

[pandora-kernel.git] / include / linux / kernel.h

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index e9b492b..450092c 100644 (file)
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -173,6 +173,11 @@ extern int _cond_resched(void);
                (__x < 0) ? -__x : __x;         \
        })
 
+#define abs64(x) ({                            \
+               s64 __x = (x);                  \
+               (__x < 0) ? -__x : __x;         \
+       })
+
 #ifdef CONFIG_PROVE_LOCKING
 void might_fault(void);
 #else
@@ -277,6 +282,11 @@ asmlinkage int vprintk(const char *fmt, va_list args)
 asmlinkage int printk(const char * fmt, ...)
        __attribute__ ((format (printf, 1, 2))) __cold;
 
+/*
+ * Please don't use printk_ratelimit(), because it shares ratelimiting state
+ * with all other unrelated printk_ratelimit() callsites.  Instead use
+ * printk_ratelimited() or plain old __ratelimit().
+ */
 extern int __printk_ratelimit(const char *func);
 #define printk_ratelimit() __printk_ratelimit(__func__)
 extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,