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e5a4b0bb80
... making both non-draining. That means that tcp_recvmsg() becomes non-draining. And _that_ would break iscsit_do_rx_data() unless we a) make sure tcp_recvmsg() is uniformly non-draining (it is) b) make sure it copes with arbitrary (including shifted) iov_iter (it does, all it uses is iov_iter primitives) c) make iscsit_do_rx_data() initialize ->msg_iter only once. Fortunately, (c) is doable with minimal work and we are rid of one the two places where kernel send/recvmsg users would be unhappy with non-draining behaviour. Actually, that makes all but one of ->recvmsg() instances iov_iter-clean. The exception is skcipher_recvmsg() and it also isn't hard to convert to primitives (iov_iter_get_pages() is needed there). That'll wait a bit - there's some interplay with ->sendmsg() path for that one. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
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