libceph: define osd data initialization helpers
Define and use functions that encapsulate the initializion of a
ceph_osd_data structure.
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 1379b33..f8f8561 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -79,6 +79,38 @@
return 0;
}
+void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data,
+ struct page **pages, u64 length, u32 alignment,
+ bool pages_from_pool, bool own_pages)
+{
+ osd_data->type = CEPH_OSD_DATA_TYPE_PAGES;
+ osd_data->pages = pages;
+ osd_data->length = length;
+ osd_data->alignment = alignment;
+ osd_data->pages_from_pool = pages_from_pool;
+ osd_data->own_pages = own_pages;
+}
+EXPORT_SYMBOL(ceph_osd_data_pages_init);
+
+void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data,
+ struct ceph_pagelist *pagelist)
+{
+ osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST;
+ osd_data->pagelist = pagelist;
+}
+EXPORT_SYMBOL(ceph_osd_data_pagelist_init);
+
+#ifdef CONFIG_BLOCK
+void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data,
+ struct bio *bio, size_t bio_length)
+{
+ osd_data->type = CEPH_OSD_DATA_TYPE_BIO;
+ osd_data->bio = bio;
+ osd_data->bio_length = bio_length;
+}
+EXPORT_SYMBOL(ceph_osd_data_bio_init);
+#endif /* CONFIG_BLOCK */
+
/*
* requests
*/
@@ -400,8 +432,7 @@
ceph_pagelist_append(pagelist, src->cls.indata,
src->cls.indata_len);
- req->r_data_out.type = CEPH_OSD_DATA_TYPE_PAGELIST;
- req->r_data_out.pagelist = pagelist;
+ ceph_osd_data_pagelist_init(&req->r_data_out, pagelist);
out_data_len = pagelist->length;
break;
case CEPH_OSD_OP_STARTSYNC:
@@ -2056,7 +2087,6 @@
struct page **pages, int num_pages, int page_align)
{
struct ceph_osd_request *req;
- struct ceph_osd_data *osd_data;
struct ceph_osd_req_op op;
int rc = 0;
@@ -2071,14 +2101,11 @@
/* it may be a short read due to an object boundary */
- osd_data = &req->r_data_in;
- osd_data->type = CEPH_OSD_DATA_TYPE_PAGES;
- osd_data->pages = pages;
- osd_data->length = *plen;
- osd_data->alignment = page_align;
+ ceph_osd_data_pages_init(&req->r_data_in, pages, *plen, page_align,
+ false, false);
dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n",
- off, *plen, osd_data->length, page_align);
+ off, *plen, *plen, page_align);
ceph_osdc_build_request(req, off, 1, &op, NULL, vino.snap, NULL);
@@ -2104,7 +2131,6 @@
struct page **pages, int num_pages)
{
struct ceph_osd_request *req;
- struct ceph_osd_data *osd_data;
struct ceph_osd_req_op op;
int rc = 0;
int page_align = off & ~PAGE_MASK;
@@ -2119,12 +2145,9 @@
return PTR_ERR(req);
/* it may be a short write due to an object boundary */
- osd_data = &req->r_data_out;
- osd_data->type = CEPH_OSD_DATA_TYPE_PAGES;
- osd_data->pages = pages;
- osd_data->length = len;
- osd_data->alignment = page_align;
- dout("writepages %llu~%llu (%llu bytes)\n", off, len, osd_data->length);
+ ceph_osd_data_pages_init(&req->r_data_out, pages, len, page_align,
+ false, false);
+ dout("writepages %llu~%llu (%llu bytes)\n", off, len, len);
ceph_osdc_build_request(req, off, 1, &op, snapc, CEPH_NOSNAP, mtime);