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libceph: define a few more helpers 

Define ceph_osd_data_init() and ceph_osd_data_release() to clean up
a little code.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
This commit is contained in:
Alex Elder 2013-04-03 01:28:57 -05:00 committed by Sage Weil
parent 43bfe5de9f
commit c54d47bfad
1 changed files with 26 additions and 18 deletions
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44
net/ceph/osd_client.c
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@ -79,6 +79,12 @@ static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen,
return 0;
}
static void ceph_osd_data_init(struct ceph_osd_data *osd_data)
{
memset(osd_data, 0, sizeof (*osd_data));
osd_data->type = CEPH_OSD_DATA_TYPE_NONE;
}
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)
@ -111,16 +117,28 @@ void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data,
EXPORT_SYMBOL(ceph_osd_data_bio_init);
#endif /* CONFIG_BLOCK */
static void ceph_osd_data_release(struct ceph_osd_data *osd_data)
{
if (osd_data->type != CEPH_OSD_DATA_TYPE_PAGES)
return;
if (osd_data->own_pages) {
int num_pages;
num_pages = calc_pages_for((u64)osd_data->alignment,
(u64)osd_data->length);
ceph_release_page_vector(osd_data->pages, num_pages);
}
}
/*
* requests
*/
void ceph_osdc_release_request(struct kref *kref)
{
int num_pages;
struct ceph_osd_request *req = container_of(kref,
struct ceph_osd_request,
r_kref);
struct ceph_osd_request *req;
req = container_of(kref, struct ceph_osd_request, r_kref);
if (req->r_request)
ceph_msg_put(req->r_request);
if (req->r_reply) {
@ -128,18 +146,8 @@ void ceph_osdc_release_request(struct kref *kref)
ceph_msg_put(req->r_reply);
}
if (req->r_data_in.type == CEPH_OSD_DATA_TYPE_PAGES &&
req->r_data_in.own_pages) {
num_pages = calc_pages_for((u64)req->r_data_in.alignment,
(u64)req->r_data_in.length);
ceph_release_page_vector(req->r_data_in.pages, num_pages);
}
if (req->r_data_out.type == CEPH_OSD_DATA_TYPE_PAGES &&
req->r_data_out.own_pages) {
num_pages = calc_pages_for((u64)req->r_data_out.alignment,
(u64)req->r_data_out.length);
ceph_release_page_vector(req->r_data_out.pages, num_pages);
}
ceph_osd_data_release(&req->r_data_in);
ceph_osd_data_release(&req->r_data_out);
ceph_put_snap_context(req->r_snapc);
if (req->r_mempool)
@ -203,8 +211,8 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
}
req->r_reply = msg;
req->r_data_in.type = CEPH_OSD_DATA_TYPE_NONE;
req->r_data_out.type = CEPH_OSD_DATA_TYPE_NONE;
ceph_osd_data_init(&req->r_data_in);
ceph_osd_data_init(&req->r_data_out);
/* create request message; allow space for oid */
if (use_mempool)