redonkable/alistair23-linux
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ceph: use kref for ceph_osd_request

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Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil 2009-12-07 13:37:03 -08:00
parent 153c8e6bf7
commit 415e49a9c4
2 changed files with 26 additions and 22 deletions
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37
fs/ceph/osd_client.c
View file

@ -77,25 +77,24 @@ static void calc_layout(struct ceph_osd_client *osdc,
/*
* requests
*/
void ceph_osdc_put_request(struct ceph_osd_request *req)
void ceph_osdc_release_request(struct kref *kref)
{
dout("osdc put_request %p %d -> %d\n", req, atomic_read(&req->r_ref),
atomic_read(&req->r_ref)-1);
BUG_ON(atomic_read(&req->r_ref) <= 0);
if (atomic_dec_and_test(&req->r_ref)) {
if (req->r_request)
ceph_msg_put(req->r_request);
if (req->r_reply)
ceph_msg_put(req->r_reply);
if (req->r_own_pages)
ceph_release_page_vector(req->r_pages,
req->r_num_pages);
ceph_put_snap_context(req->r_snapc);
if (req->r_mempool)
mempool_free(req, req->r_osdc->req_mempool);
else
kfree(req);
}
struct ceph_osd_request *req = container_of(kref,
struct ceph_osd_request,
r_kref);
if (req->r_request)
ceph_msg_put(req->r_request);
if (req->r_reply)
ceph_msg_put(req->r_reply);
if (req->r_own_pages)
ceph_release_page_vector(req->r_pages,
req->r_num_pages);
ceph_put_snap_context(req->r_snapc);
if (req->r_mempool)
mempool_free(req, req->r_osdc->req_mempool);
else
kfree(req);
}
/*
@ -149,7 +148,7 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
req->r_osdc = osdc;
req->r_mempool = use_mempool;
atomic_set(&req->r_ref, 1);
kref_init(&req->r_kref);
init_completion(&req->r_completion);
init_completion(&req->r_safe_completion);
INIT_LIST_HEAD(&req->r_unsafe_item);

11
fs/ceph/osd_client.h
View file

@ -2,6 +2,7 @@
#define _FS_CEPH_OSD_CLIENT_H
#include <linux/completion.h>
#include <linux/kref.h>
#include <linux/mempool.h>
#include <linux/rbtree.h>
@ -49,7 +50,7 @@ struct ceph_osd_request {
int r_prepared_pages, r_got_reply;
struct ceph_osd_client *r_osdc;
atomic_t r_ref;
struct kref r_kref;
bool r_mempool;
struct completion r_completion, r_safe_completion;
ceph_osdc_callback_t r_callback, r_safe_callback;
@ -118,9 +119,13 @@ extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *,
static inline void ceph_osdc_get_request(struct ceph_osd_request *req)
{
atomic_inc(&req->r_ref);
kref_get(&req->r_kref);
}
extern void ceph_osdc_release_request(struct kref *kref);
static inline void ceph_osdc_put_request(struct ceph_osd_request *req)
{
kref_put(&req->r_kref, ceph_osdc_release_request);
}
extern void ceph_osdc_put_request(struct ceph_osd_request *req);
extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req,