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authorAlex Elder <elder@inktank.com>2012-06-11 23:57:13 +0400
committerSage Weil <sage@inktank.com>2012-07-06 08:14:18 +0400
commitabdaa6a849af1d63153682c11f5bbb22dacb1f6b (patch)
tree449810fd8346abb8ba9b608aaa0f2d8a250696d2 /net
parent572c588edadaa3da3992bd8a0fed830bbcc861f8 (diff)
downloadlinux-abdaa6a849af1d63153682c11f5bbb22dacb1f6b.tar.xz
libceph: don't use bio_iter as a flag
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 43643528cce60ca184fe8197efa8e8da7c89a037 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: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
Diffstat (limited to 'net')
-rw-r--r--net/ceph/messenger.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index fedad914b238..3a4330371d88 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -604,7 +604,7 @@ static void prepare_write_message_data(struct ceph_connection *con)
else
con->out_msg_pos.page_pos = 0;
#ifdef CONFIG_BLOCK
- if (msg->bio && !msg->bio_iter)
+ if (msg->bio)
init_bio_iter(msg->bio, &msg->bio_iter, &msg->bio_seg);
#endif
con->out_msg_pos.data_pos = 0;
@@ -672,10 +672,6 @@ static void prepare_write_message(struct ceph_connection *con)
m->hdr.seq = cpu_to_le64(++con->out_seq);
m->needs_out_seq = false;
}
-#ifdef CONFIG_BLOCK
- else
- m->bio_iter = NULL;
-#endif
dout("prepare_write_message %p seq %lld type %d len %d+%d+%d %d pgs\n",
m, con->out_seq, le16_to_cpu(m->hdr.type),