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    libceph: don't use bio_iter as a flag · abdaa6a8
    Alex Elder 提交于
    Recently a bug was fixed in which the bio_iter field in a ceph
    message was not being properly re-initialized when a message got
    re-transmitted:
        commit 43643528
        Author: Yan, Zheng <zheng.z.yan@intel.com>
        rbd: Clear ceph_msg->bio_iter for retransmitted message
    
    We are now only initializing the bio_iter field when we are about to
    start to write message data (in prepare_write_message_data()),
    rather than every time we are attempting to write any portion of the
    message data (in write_partial_msg_pages()).  This means we no
    longer need to use the msg->bio_iter field as a flag.
    
    So just don't do that any more.  Trust prepare_write_message_data()
    to ensure msg->bio_iter is properly initialized, every time we are
    about to begin writing (or re-writing) a message's bio data.
    Signed-off-by: NAlex Elder <elder@inktank.com>
    Reviewed-by: NSage Weil <sage@inktank.com>
    abdaa6a8
messenger.c 66.6 KB