From e766d7b55e10f93c7bab298135a4e90dcc46620d Mon Sep 17 00:00:00 2001
From: Alex Elder <elder@inktank.com>
Date: Thu, 7 Mar 2013 15:38:28 -0600
Subject: libceph: implement pages array cursor
Implement and use cursor routines for page array message data items
for outbound message data.
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
---
include/linux/ceph/messenger.h | 6 ++++++
1 file changed, 6 insertions(+)
(limited to 'include/linux/ceph/messenger.h')
diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h
index 76b4645e2dff..b53b9ef65009 100644
--- a/include/linux/ceph/messenger.h
+++ b/include/linux/ceph/messenger.h
@@ -105,6 +105,12 @@ struct ceph_msg_data_cursor {
unsigned int vector_offset; /* bytes from vector */
};
#endif /* CONFIG_BLOCK */
+ struct { /* pages */
+ size_t resid; /* bytes from array */
+ unsigned int page_offset; /* offset in page */
+ unsigned short page_index; /* index in array */
+ unsigned short page_count; /* pages in array */
+ };
struct { /* pagelist */
struct page *page; /* page from list */
size_t offset; /* bytes from list */
--
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