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/drivers/block/rbd.c b/drivers/block/rbd.c
index afbc9f6..ab21b52 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1350,17 +1350,13 @@
break; /* Nothing to do */
case OBJ_REQUEST_BIO:
rbd_assert(obj_request->bio_list != NULL);
- osd_data->type = CEPH_OSD_DATA_TYPE_BIO;
- osd_data->bio = obj_request->bio_list;
- osd_data->bio_length = obj_request->length;
+ ceph_osd_data_bio_init(osd_data, obj_request->bio_list,
+ obj_request->length);
break;
case OBJ_REQUEST_PAGES:
- osd_data->type = CEPH_OSD_DATA_TYPE_PAGES;
- osd_data->pages = obj_request->pages;
- osd_data->length = obj_request->length;
- osd_data->alignment = offset & ~PAGE_MASK;
- osd_data->pages_from_pool = false;
- osd_data->own_pages = false;
+ ceph_osd_data_pages_init(osd_data, obj_request->pages,
+ obj_request->length, offset & ~PAGE_MASK,
+ false, false);
break;
}
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 5d8ce79..cf9032a 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -342,10 +342,8 @@
}
pages[i] = page;
}
- req->r_data_in.type = CEPH_OSD_DATA_TYPE_PAGES;
- req->r_data_in.pages = pages;
- req->r_data_in.length = len;
- req->r_data_in.alignment = 0;
+ ceph_osd_data_pages_init(&req->r_data_in, pages, len, 0,
+ false, false);
req->r_callback = finish_read;
req->r_inode = inode;
@@ -917,11 +915,8 @@
dout("writepages got %d pages at %llu~%llu\n",
locked_pages, offset, len);
- req->r_data_out.type = CEPH_OSD_DATA_TYPE_PAGES;
- req->r_data_out.pages = pages;
- req->r_data_out.length = len;
- req->r_data_out.alignment = 0;
- req->r_data_out.pages_from_pool = !!pool;
+ ceph_osd_data_pages_init(&req->r_data_out, pages, len, 0,
+ !!pool, false);
pages = NULL; /* request message now owns the pages array */
pool = NULL;
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 47826c2..da642af 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -491,6 +491,7 @@
unsigned long buf_align;
int ret;
struct timespec mtime = CURRENT_TIME;
+ bool own_pages = false;
if (ceph_snap(file_inode(file)) != CEPH_NOSNAP)
return -EROFS;
@@ -571,14 +572,11 @@
if ((file->f_flags & O_SYNC) == 0) {
/* get a second commit callback */
req->r_safe_callback = sync_write_commit;
- req->r_data_out.own_pages = 1;
+ own_pages = true;
}
}
- req->r_data_out.type = CEPH_OSD_DATA_TYPE_PAGES;
- req->r_data_out.pages = pages;
- req->r_data_out.length = len;
- req->r_data_out.alignment = page_align;
- req->r_inode = inode;
+ ceph_osd_data_pages_init(&req->r_data_out, pages, len, page_align,
+ false, own_pages);
/* BUG_ON(vino.snap != CEPH_NOSNAP); */
ceph_osdc_build_request(req, pos, num_ops, ops,
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
index 5ee1a37..af60dac 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -280,6 +280,17 @@
kref_put(&req->r_kref, ceph_osdc_release_request);
}
+extern 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);
+extern void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data,
+ struct ceph_pagelist *pagelist);
+#ifdef CONFIG_BLOCK
+extern void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data,
+ struct bio *bio, size_t bio_length);
+#endif /* CONFIG_BLOCK */
+
extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req,
bool nofail);
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);