diff options
| author | Alex Elder <elder@inktank.com> | 2013-02-14 22:16:43 +0400 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2013-05-02 08:16:38 +0400 |
| commit | 02afca6ca00b7972887c5cc77068356f33bdfc18 (patch) | |
| tree | a335532b314d8da309bb7313cc84ae973d3f5ab0 /net/ceph | |
| parent | e0c594878e3211b09208c779df5f996f0b831d9e (diff) | |
| download | linux-02afca6ca00b7972887c5cc77068356f33bdfc18.tar.xz | |
libceph: isolate message page field manipulation
Define a function ceph_msg_data_set_pages(), which more clearly
abstracts the assignment page-related fields for data in a ceph
message structure. Use this new function in the osd client and mds
client.
Ideally, these fields would never be set more than once (with
BUG_ON() calls to guarantee that). At the moment though the osd
client sets these every time it receives a message, and in the event
of a communication problem this can happen more than once. (This
will be resolved shortly, but setting up these helpers first makes
it all a bit easier to work with.)
Rearrange the field order in a ceph_msg structure to group those
that are used to define the possible data payloads.
This partially resolves:
http://tracker.ceph.com/issues/4263
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Diffstat (limited to 'net/ceph')
| -rw-r--r-- | net/ceph/messenger.c | 11 | ||||
| -rw-r--r-- | net/ceph/osd_client.c | 10 |
2 files changed, 15 insertions, 6 deletions
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index ce1669f75ca5..cec39cb623f0 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -2689,6 +2689,17 @@ void ceph_con_keepalive(struct ceph_connection *con) } EXPORT_SYMBOL(ceph_con_keepalive); +void ceph_msg_data_set_pages(struct ceph_msg *msg, struct page **pages, + unsigned int page_count, size_t alignment) +{ + /* BUG_ON(msg->pages); */ + /* BUG_ON(msg->page_count); */ + + msg->pages = pages; + msg->page_count = page_count; + msg->page_alignment = alignment & ~PAGE_MASK; +} +EXPORT_SYMBOL(ceph_msg_data_set_pages); /* * construct a new message with given type, size diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 202af14dc6dc..a09d57134075 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -1760,11 +1760,10 @@ int ceph_osdc_start_request(struct ceph_osd_client *osdc, if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { unsigned int page_count; - req->r_request->pages = osd_data->pages; page_count = calc_pages_for((u64)osd_data->alignment, (u64)osd_data->length); - req->r_request->page_count = page_count; - req->r_request->page_alignment = osd_data->alignment; + ceph_msg_data_set_pages(req->r_request, osd_data->pages, + page_count, osd_data->alignment); #ifdef CONFIG_BLOCK } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { req->r_request->bio = osd_data->bio; @@ -2135,9 +2134,8 @@ static struct ceph_msg *get_reply(struct ceph_connection *con, } page_count = calc_pages_for((u64)osd_data->alignment, (u64)osd_data->length); - m->pages = osd_data->pages; - m->page_count = page_count; - m->page_alignment = osd_data->alignment; + ceph_msg_data_set_pages(m, osd_data->pages, + osd_data->num_pages, osd_data->alignment); #ifdef CONFIG_BLOCK } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { m->bio = osd_data->bio; |