Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 47 insertions, 0 deletions

diff --git a/include/linux/task_io_accounting_ops.h b/include/linux/task_io_accounting_ops.h
new file mode 100644
index 000000000000..df2a319106b2
--- /dev/null
+++ b/include/linux/task_io_accounting_ops.h
@@ -0,0 +1,47 @@
+/*
+ * Task I/O accounting operations
+ */
+#ifndef __TASK_IO_ACCOUNTING_OPS_INCLUDED
+#define __TASK_IO_ACCOUNTING_OPS_INCLUDED
+
+#ifdef CONFIG_TASK_IO_ACCOUNTING
+static inline void task_io_account_read(size_t bytes)
+{
+        current->ioac.read_bytes += bytes;
+}
+
+static inline void task_io_account_write(size_t bytes)
+{
+        current->ioac.write_bytes += bytes;
+}
+
+static inline void task_io_account_cancelled_write(size_t bytes)
+{
+        current->ioac.cancelled_write_bytes += bytes;
+}
+
+static inline void task_io_accounting_init(struct task_struct *tsk)
+{
+        memset(&tsk->ioac, 0, sizeof(tsk->ioac));
+}
+
+#else
+
+static inline void task_io_account_read(size_t bytes)
+{
+}
+
+static inline void task_io_account_write(size_t bytes)
+{
+}
+
+static inline void task_io_account_cancelled_write(size_t bytes)
+{
+}
+
+static inline void task_io_accounting_init(struct task_struct *tsk)
+{
+}
+
+#endif          /* CONFIG_TASK_IO_ACCOUNTING */
+#endif          /* __TASK_IO_ACCOUNTING_OPS_INCLUDED */