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authorAlex Elder <elder@inktank.com>2013-03-14 14:09:06 -0500
committerSage Weil <sage@inktank.com>2013-05-01 21:17:57 -0700
commita19308048182d5f9e16b03b1d1c038d9346c7589 (patch)
tree1395d1027753afa2ab5caec1808385f3a68893be /net/ceph/messenger.c
parentfdce58ccb5df621695b079378c619046acabc778 (diff)
libceph: record message data length
Keep track of the length of the data portion for a message in a separate field in the ceph_msg structure. This information has been maintained in wire byte order in the message header, but that's going to change soon. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Diffstat (limited to 'net/ceph/messenger.c')
-rw-r--r--net/ceph/messenger.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index ee160864e8ea..fa9b4d0243a0 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -2981,6 +2981,7 @@ void ceph_msg_data_set_pages(struct ceph_msg *msg, struct page **pages,
BUG_ON(!pages);
BUG_ON(!length);
+ BUG_ON(msg->data_length);
BUG_ON(msg->data != NULL);
data = ceph_msg_data_create(CEPH_MSG_DATA_PAGES);
@@ -2990,6 +2991,7 @@ void ceph_msg_data_set_pages(struct ceph_msg *msg, struct page **pages,
data->alignment = alignment & ~PAGE_MASK;
msg->data = data;
+ msg->data_length = length;
}
EXPORT_SYMBOL(ceph_msg_data_set_pages);
@@ -3000,6 +3002,7 @@ void ceph_msg_data_set_pagelist(struct ceph_msg *msg,
BUG_ON(!pagelist);
BUG_ON(!pagelist->length);
+ BUG_ON(msg->data_length);
BUG_ON(msg->data != NULL);
data = ceph_msg_data_create(CEPH_MSG_DATA_PAGELIST);
@@ -3007,14 +3010,17 @@ void ceph_msg_data_set_pagelist(struct ceph_msg *msg,
data->pagelist = pagelist;
msg->data = data;
+ msg->data_length = pagelist->length;
}
EXPORT_SYMBOL(ceph_msg_data_set_pagelist);
-void ceph_msg_data_set_bio(struct ceph_msg *msg, struct bio *bio)
+void ceph_msg_data_set_bio(struct ceph_msg *msg, struct bio *bio,
+ size_t length)
{
struct ceph_msg_data *data;
BUG_ON(!bio);
+ BUG_ON(msg->data_length);
BUG_ON(msg->data != NULL);
data = ceph_msg_data_create(CEPH_MSG_DATA_BIO);
@@ -3022,6 +3028,7 @@ void ceph_msg_data_set_bio(struct ceph_msg *msg, struct bio *bio)
data->bio = bio;
msg->data = data;
+ msg->data_length = length;
}
EXPORT_SYMBOL(ceph_msg_data_set_bio);
@@ -3200,6 +3207,7 @@ void ceph_msg_last_put(struct kref *kref)
}
ceph_msg_data_destroy(m->data);
m->data = NULL;
+ m->data_length = 0;
if (m->pool)
ceph_msgpool_put(m->pool, m);

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