When there is no more data, ceph_msg_data_{pages,pagelist}_advance()
should not move on to the next page.
Signed-off-by: Yan, Zheng <zheng.z.yan@xxxxxxxxx>
---
net/ceph/messenger.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index 30efc5c..4f55f9c 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -919,6 +919,9 @@ static bool ceph_msg_data_pages_advance(struct ceph_msg_data_cursor *cursor,
if (!bytes || cursor->page_offset)
return false; /* more bytes to process in the current page */
+ if (!cursor->resid)
+ return false; /* no more data */
+
/* Move on to the next page; offset is already at 0 */
BUG_ON(cursor->page_index >= cursor->page_count);
@@ -1004,6 +1007,9 @@ static bool ceph_msg_data_pagelist_advance(struct ceph_msg_data_cursor *cursor,
if (!bytes || cursor->offset & ~PAGE_MASK)
return false; /* more bytes to process in the current page */
+ if (!cursor->resid)
+ return false; /* no more data */
+
/* Move on to the next page */
BUG_ON(list_is_last(&cursor->page->lru, &pagelist->head));
--
1.8.5.3
--
To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
