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RDS: Do not set op_active in r_m_copy_from_user().

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Do not allocate sgs for data for 0-length datagrams

Set data.op_active in rds_sendmsg() instead of
rds_message_copy_from_user().

Signed-off-by: Andy Grover <andy.grover@oracle.com>
This commit is contained in:
Andy Grover 2010-02-03 19:40:32 -08:00
parent 5b2366bd28
commit 372cd7dedf
2 changed files with 8 additions and 7 deletions
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2
net/rds/message.c
View File

@ -330,8 +330,6 @@ int rds_message_copy_from_user(struct rds_message *rm, struct iovec *first_iov,
sg++;
}
rm->data.op_active = 1;
out:
return ret;
}

13
net/rds/send.c
View File

@ -970,11 +970,14 @@ int rds_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg,
goto out;
}
rm->data.op_sg = rds_message_alloc_sgs(rm, ceil(payload_len, PAGE_SIZE));
/* XXX fix this to not allocate memory */
ret = rds_message_copy_from_user(rm, msg->msg_iov, payload_len);
if (ret)
goto out;
/* Attach data to the rm */
if (payload_len) {
rm->data.op_sg = rds_message_alloc_sgs(rm, ceil(payload_len, PAGE_SIZE));
ret = rds_message_copy_from_user(rm, msg->msg_iov, payload_len);
if (ret)
goto out;
}
rm->data.op_active = 1;
rm->m_daddr = daddr;