[PATCH v11 06/13] block: modify the comment for BDRV_REQ_PREFETCH flag

[Andrey Shinkevich]

Modify the comment for the flag BDRV_REQ_PREFETCH as we are going to
use it alone and pass it to the COR-filter driver for further
processing.

Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
---
 include/block/block.h | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/include/block/block.h b/include/block/block.h
index 981ab5b..2b7efd1 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -71,9 +71,10 @@ typedef enum {
     BDRV_REQ_NO_FALLBACK        = 0x100,
 
     /*
-     * BDRV_REQ_PREFETCH may be used only together with BDRV_REQ_COPY_ON_READ
-     * on read request and means that caller doesn't really need data to be
-     * written to qiov parameter which may be NULL.
+     * BDRV_REQ_PREFETCH may be used together with the BDRV_REQ_COPY_ON_READ
+     * flag or when the COR-filter applied to read operations and means that
+     * caller doesn't really need data to be written to qiov parameter which
+     * may be NULL.
      */
     BDRV_REQ_PREFETCH  = 0x200,
     /* Mask of valid flags */
-- 
1.8.3.1