libceph: define ceph_osd_data_length() (23c08a9c) · Commits · 戴 / test

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 @@ bad:
		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);

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