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ceph: use kref for struct ceph_mds_request 

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil 2009-12-07 12:31:09 -08:00
parent b6c1d5b81e
commit 153c8e6bf7
2 changed files with 41 additions and 37 deletions
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67
fs/ceph/mds_client.c
View File

@ -400,41 +400,40 @@ static void put_request_session(struct ceph_mds_request *req)
}
}
void ceph_mdsc_put_request(struct ceph_mds_request *req)
void ceph_mdsc_release_request(struct kref *kref)
{
dout("mdsc put_request %p %d -> %d\n", req,
atomic_read(&req->r_ref), atomic_read(&req->r_ref)-1);
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);
destroy_reply_info(&req->r_reply_info);
}
if (req->r_inode) {
ceph_put_cap_refs(ceph_inode(req->r_inode),
CEPH_CAP_PIN);
iput(req->r_inode);
}
if (req->r_locked_dir)
ceph_put_cap_refs(ceph_inode(req->r_locked_dir),
CEPH_CAP_PIN);
if (req->r_target_inode)
iput(req->r_target_inode);
if (req->r_dentry)
dput(req->r_dentry);
if (req->r_old_dentry) {
ceph_put_cap_refs(
ceph_inode(req->r_old_dentry->d_parent->d_inode),
CEPH_CAP_PIN);
dput(req->r_old_dentry);
}
kfree(req->r_path1);
kfree(req->r_path2);
put_request_session(req);
ceph_unreserve_caps(&req->r_caps_reservation);
kfree(req);
struct ceph_mds_request *req = container_of(kref,
struct ceph_mds_request,
r_kref);
if (req->r_request)
ceph_msg_put(req->r_request);
if (req->r_reply) {
ceph_msg_put(req->r_reply);
destroy_reply_info(&req->r_reply_info);
}
if (req->r_inode) {
ceph_put_cap_refs(ceph_inode(req->r_inode),
CEPH_CAP_PIN);
iput(req->r_inode);
}
if (req->r_locked_dir)
ceph_put_cap_refs(ceph_inode(req->r_locked_dir),
CEPH_CAP_PIN);
if (req->r_target_inode)
iput(req->r_target_inode);
if (req->r_dentry)
dput(req->r_dentry);
if (req->r_old_dentry) {
ceph_put_cap_refs(
ceph_inode(req->r_old_dentry->d_parent->d_inode),
CEPH_CAP_PIN);
dput(req->r_old_dentry);
}
kfree(req->r_path1);
kfree(req->r_path2);
put_request_session(req);
ceph_unreserve_caps(&req->r_caps_reservation);
kfree(req);
}
/*
@ -1097,7 +1096,7 @@ ceph_mdsc_create_request(struct ceph_mds_client *mdsc, int op, int mode)
req->r_resend_mds = -1;
INIT_LIST_HEAD(&req->r_unsafe_dir_item);
req->r_fmode = -1;
atomic_set(&req->r_ref, 1); /* one for request_tree, one for caller */
kref_init(&req->r_kref);
INIT_LIST_HEAD(&req->r_wait);
init_completion(&req->r_completion);
init_completion(&req->r_safe_completion);

11
fs/ceph/mds_client.h
View File

@ -2,6 +2,7 @@
#define _FS_CEPH_MDS_CLIENT_H
#include <linux/completion.h>
#include <linux/kref.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/radix-tree.h>
@ -203,7 +204,7 @@ struct ceph_mds_request {
int r_num_stale;
int r_resend_mds; /* mds to resend to next, if any*/
atomic_t r_ref;
struct kref r_kref;
struct list_head r_wait;
struct completion r_completion;
struct completion r_safe_completion;
@ -306,9 +307,13 @@ extern int ceph_mdsc_do_request(struct ceph_mds_client *mdsc,
struct ceph_mds_request *req);
static inline void ceph_mdsc_get_request(struct ceph_mds_request *req)
{
atomic_inc(&req->r_ref);
kref_get(&req->r_kref);
}
extern void ceph_mdsc_release_request(struct kref *kref);
static inline void ceph_mdsc_put_request(struct ceph_mds_request *req)
{
kref_put(&req->r_kref, ceph_mdsc_release_request);
}
extern void ceph_mdsc_put_request(struct ceph_mds_request *req);
extern void ceph_mdsc_pre_umount(struct ceph_mds_client *mdsc);