Alex Elder
31739139f3
libceph: use kernel_sendpage() for sending zeroes ...
If a message queued for send gets revoked, zeroes are sent over the
wire instead of any unsent data. This is done by constructing a
message and passing it to kernel_sendmsg() via ceph_tcp_sendmsg().
Since we are already working with a page in this case we can use
the sendpage interface instead. Create a new ceph_tcp_sendpage()
helper that sets up flags to match the way ceph_tcp_sendmsg()
does now.
Signed-off-by: Alex Elder <elder@dreamhost.com>
Reviewed-by: Sage Weil <sage@newdream.net>
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31739139f3