Initial support for explicit write barriers

[fio.git] / ioengine.h

diff --git a/ioengine.h b/ioengine.h
index 344cdbf939a3e55fed9c7274133355e058f2a0d8..7a3c08fd7891c48d600c333342d5ad6c5ec65892 100644 (file)
--- a/ioengine.h
+++ b/ioengine.h
@@ -10,6 +10,7 @@ enum {
        IO_U_F_IN_CUR_DEPTH     = 1 << 3,
        IO_U_F_BUSY_OK          = 1 << 4,
        IO_U_F_TRIMMED          = 1 << 5,
        IO_U_F_IN_CUR_DEPTH     = 1 << 3,
        IO_U_F_BUSY_OK          = 1 << 4,
        IO_U_F_TRIMMED          = 1 << 5,

+       IO_U_F_BARRIER          = 1 << 6,

 };
 
 /*
 };
 
 /*


@@ -126,6 +127,7 @@ enum fio_ioengine_flags {
        FIO_NOIO        = 1 << 6,       /* thread does only pseudo IO */
        FIO_SIGQUIT     = 1 << 7,       /* needs SIGQUIT to exit */
        FIO_PIPEIO      = 1 << 8,       /* input/output no seekable */
        FIO_NOIO        = 1 << 6,       /* thread does only pseudo IO */
        FIO_SIGQUIT     = 1 << 7,       /* needs SIGQUIT to exit */
        FIO_PIPEIO      = 1 << 8,       /* input/output no seekable */

+       FIO_BARRIER     = 1 << 9,       /* engine supports barriers */

 };
 
 /*
 };
 
 /*