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libceph: prepare for other message data item types

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This just inserts some infrastructure in preparation for handling
other types of ceph message data items.  No functional changes,
just trying to simplify review by separating out some noise.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
This commit is contained in:
Alex Elder 2013-03-06 23:39:39 -06:00 • committed by Sage Weil
commit dd236fcb65
2 changed files with 99 additions and 26 deletions
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8
include/linux/ceph/messenger.h
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@ -97,8 +97,12 @@ static __inline__ bool ceph_msg_data_type_valid(enum ceph_msg_data_type type)
struct ceph_msg_data_cursor {
bool last_piece; /* now at last piece of data item */
struct page *page; /* current page in pagelist */
size_t offset; /* pagelist bytes consumed */
union {
struct { /* pagelist */
struct page *page; /* page from list */
size_t offset; /* bytes from list */
};
};
};
struct ceph_msg_data {