libceph: change ceph_msg_data_cursor_init() to take cursor
Make it possible to have local cursors and embed them outside struct ceph_msg. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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@ -1170,10 +1170,9 @@ static void __ceph_msg_data_cursor_init(struct ceph_msg_data_cursor *cursor)
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cursor->need_crc = true;
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}
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static void ceph_msg_data_cursor_init(struct ceph_msg *msg, size_t length)
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static void ceph_msg_data_cursor_init(struct ceph_msg_data_cursor *cursor,
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struct ceph_msg *msg, size_t length)
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{
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struct ceph_msg_data_cursor *cursor = &msg->cursor;
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BUG_ON(!length);
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BUG_ON(length > msg->data_length);
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BUG_ON(!msg->num_data_items);
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@ -1278,7 +1277,7 @@ static void prepare_message_data(struct ceph_msg *msg, u32 data_len)
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{
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/* Initialize data cursor */
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ceph_msg_data_cursor_init(msg, (size_t)data_len);
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ceph_msg_data_cursor_init(&msg->cursor, msg, data_len);
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}
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/*
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