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Commit 23c08a9c authored by Alex Elder's avatar Alex Elder Committed by Sage Weil
Browse files

libceph: define ceph_osd_data_length() 



One more osd data helper, which returns the length of the
data item, regardless of its type.

Signed-off-by: default avatarAlex Elder <elder@inktank.com>
Reviewed-by: default avatarJosh Durgin <josh.durgin@inktank.com>
parent c54d47bf

net/ceph/osd_client.c

+26 −5
Original line number Diff line number Diff line
@@ -117,6 +117,25 @@ void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 
EXPORT_SYMBOL(ceph_osd_data_bio_init);

#endif /* CONFIG_BLOCK */



static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data)

{

	switch (osd_data->type) {

	case CEPH_OSD_DATA_TYPE_NONE:

		return 0;

	case CEPH_OSD_DATA_TYPE_PAGES:

		return osd_data->length;

	case CEPH_OSD_DATA_TYPE_PAGELIST:

		return (u64)osd_data->pagelist->length;

#ifdef CONFIG_BLOCK

	case CEPH_OSD_DATA_TYPE_BIO:

		return (u64)osd_data->bio_length;

#endif /* CONFIG_BLOCK */

	default:

		WARN(true, "unrecognized data type %d\n", (int)osd_data->type);

		return 0;

	}

}



static void ceph_osd_data_release(struct ceph_osd_data *osd_data)

{

	if (osd_data->type != CEPH_OSD_DATA_TYPE_PAGES)
@@ -1887,17 +1906,19 @@ static void handle_watch_notify(struct ceph_osd_client *osdc, 
static void ceph_osdc_msg_data_set(struct ceph_msg *msg,

				struct ceph_osd_data *osd_data)

{

	u64 length = ceph_osd_data_length(osd_data);



	if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) {

		BUG_ON(osd_data->length > (u64) SIZE_MAX);

		if (osd_data->length)

		BUG_ON(length > (u64) SIZE_MAX);

		if (length)

			ceph_msg_data_set_pages(msg, osd_data->pages,

				osd_data->length, osd_data->alignment);

					length, osd_data->alignment);

	} else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) {

		BUG_ON(!osd_data->pagelist->length);

		BUG_ON(!length);

		ceph_msg_data_set_pagelist(msg, osd_data->pagelist);

#ifdef CONFIG_BLOCK

	} else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) {

		ceph_msg_data_set_bio(msg, osd_data->bio, osd_data->bio_length);

		ceph_msg_data_set_bio(msg, osd_data->bio, length);

#endif

	} else {

		BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE);