[PATCH 095/118] drbd: Moved the mdev member into drbd_work (from drbd_request and drbd_peer_request)

Philipp Reisner
2011-08-25T15:16:26Z

drivers/block/drbd/drbd_actlog.c | 2 ++
drivers/block/drbd/drbd_int.h | 5 ++---
drivers/block/drbd/drbd_main.c | 8 ++++++++
drivers/block/drbd/drbd_nl.c | 6 +++---
drivers/block/drbd/drbd_receiver.c | 10 ++++++----
drivers/block/drbd/drbd_req.c | 11 ++++++-----
drivers/block/drbd/drbd_req.h | 4 ++--
drivers/block/drbd/drbd_state.c | 1 +
drivers/block/drbd/drbd_worker.c | 8 ++++----
9 files changed, 34 insertions(+), 21 deletions(-)

diff --git a/drivers/block/drbd/drbd_actlog.c b/drivers/block/drbd/drbd_actlog.c
index 7943177..637a937 100644
--- a/drivers/block/drbd/drbd_actlog.c
+++ b/drivers/block/drbd/drbd_actlog.c
@@ -228,6 +228,7 @@ void drbd_al_begin_io(struct drbd_conf *mdev, sector_t sector)
al_work.enr = enr;
al_work.old_enr = al_ext->lc_number;
al_work.w.cb = w_al_write_transaction;
+ al_work.w.mdev = mdev;
drbd_queue_work_front(&mdev->tconn->data.work, &al_work.w);
wait_for_completion(&al_work.event);

@@ -717,6 +718,7 @@ static void drbd_try_clear_on_disk_bm(struct drbd_conf *mdev, sector_t sector,
if (udw) {
udw->enr = ext->lce.lc_number;
udw->w.cb = w_update_odbm;
+ udw->w.mdev = mdev;
drbd_queue_work_front(&mdev->tconn->data.work, &udw->w);
} else {
dev_warn(DEV, "Could not kmalloc an udw\n");
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 388dc1d..5be0ae8 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -644,13 +644,13 @@ typedef int (*drbd_work_cb)(struct drbd_conf *, struct drbd_work *, int cancel);
struct drbd_work {
struct list_head list;
drbd_work_cb cb;
+ struct drbd_conf *mdev;
};

#include "drbd_interval.h"

struct drbd_request {
struct drbd_work w;
- struct drbd_conf *mdev;

/* if local IO is not allowed, will be NULL.
* if local IO _is_ allowed, holds the locally submitted bio clone,
@@ -714,7 +714,6 @@ struct digest_info {
struct drbd_peer_request {
struct drbd_work w;
struct drbd_epoch *epoch; /* for writes */
- struct drbd_conf *mdev;
struct page *pages;
atomic_t pending_bios;
struct drbd_interval i;
@@ -1536,7 +1535,7 @@ extern void _drbd_wait_ee_list_empty(struct drbd_conf *mdev,
struct list_head *head);
extern void drbd_set_recv_tcq(struct drbd_conf *mdev, int tcq_enabled);
extern void _drbd_clear_done_ee(struct drbd_conf *mdev, struct list_head *to_be_freed);
-extern void drbd_flush_workqueue(struct drbd_tconn *tconn);
+extern void drbd_flush_workqueue(struct drbd_conf *mdev);

/* yes, there is kernel_setsockopt, but only since 2.6.18. we don't need to
* mess with get_fs/set_fs, we know we are KERNEL_DS always. */
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index b427c1a..b054b7b 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1848,6 +1848,14 @@ void drbd_init_set_defaults(struct drbd_conf *mdev)
mdev->md_sync_work.cb = w_md_sync;
mdev->bm_io_work.w.cb = w_bitmap_io;
mdev->start_resync_work.cb = w_start_resync;
+
+ mdev->resync_work.mdev = mdev;
+ mdev->unplug_work.mdev = mdev;
+ mdev->go_diskless.mdev = mdev;
+ mdev->md_sync_work.mdev = mdev;
+ mdev->bm_io_work.w.mdev = mdev;
+ mdev->start_resync_work.mdev = mdev;
+
init_timer(&mdev->resync_timer);
init_timer(&mdev->md_sync_timer);
init_timer(&mdev->start_resync_timer);
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 331495f..0debe58 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -876,7 +876,7 @@ static void drbd_reconfig_start(struct drbd_conf *mdev)
wait_event(mdev->state_wait, !test_and_set_bit(CONFIG_PENDING, &mdev->flags));
wait_event(mdev->state_wait, !test_bit(DEVICE_DYING, &mdev->flags));
drbd_thread_start(&mdev->tconn->worker);
- drbd_flush_workqueue(mdev->tconn);
+ drbd_flush_workqueue(mdev);
}

/* if still unconfigured, stops worker again.
@@ -1076,7 +1076,7 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
/* also wait for the last barrier ack. */
wait_event(mdev->misc_wait, !atomic_read(&mdev->ap_pending_cnt) || is_susp(mdev->state));
/* and for any other previously queued work */
- drbd_flush_workqueue(mdev->tconn);
+ drbd_flush_workqueue(mdev);

rv = _drbd_request_state(mdev, NS(disk, D_ATTACHING), CS_VERBOSE);
retcode = rv; /* FIXME: Type mismatch. */
@@ -1520,7 +1520,7 @@ static int drbd_nl_net_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp,
}
}

- drbd_flush_workqueue(mdev->tconn);
+ drbd_flush_workqueue(mdev);
spin_lock_irq(&mdev->tconn->req_lock);
if (mdev->tconn->net_conf != NULL) {
retcode = ERR_NET_CONFIGURED;
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index c280fa8..183e533 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -345,7 +345,7 @@ drbd_alloc_ee(struct drbd_conf *mdev, u64 id, sector_t sector,
peer_req->i.waiting = false;

peer_req->epoch = NULL;
- peer_req->mdev = mdev;
+ peer_req->w.mdev = mdev;
peer_req->pages = page;
atomic_set(&peer_req->pending_bios, 0);
peer_req->flags = 0;
@@ -3823,13 +3823,14 @@ static void drbdd(struct drbd_tconn *tconn)
}
}

-void drbd_flush_workqueue(struct drbd_tconn *tconn)
+void drbd_flush_workqueue(struct drbd_conf *mdev)
{
struct drbd_wq_barrier barr;

barr.w.cb = w_prev_work_done;
+ barr.w.mdev = mdev;
init_completion(&barr.done);
- drbd_queue_work(&tconn->data.work, &barr.w);
+ drbd_queue_work(&mdev->tconn->data.work, &barr.w);
wait_for_completion(&barr.done);
}

@@ -3909,7 +3910,7 @@ static int drbd_disconnected(int vnr, void *p, void *data)
/* wait for all w_e_end_data_req, w_e_end_rsdata_req, w_send_barrier,
* w_make_resync_request etc. which may still be on the worker queue
* to be "canceled" */
- drbd_flush_workqueue(mdev->tconn);
+ drbd_flush_workqueue(mdev);

/* This also does reclaim_net_ee(). If we do this too early, we might
* miss some resync ee and pages.*/
@@ -4510,6 +4511,7 @@ static int got_OVResult(struct drbd_conf *mdev, enum drbd_packet cmd)
w = kmalloc(sizeof(*w), GFP_NOIO);
if (w) {
w->cb = w_ov_finished;
+ w->mdev = mdev;
drbd_queue_work_front(&mdev->tconn->data.work, w);
} else {
dev_err(DEV, "kmalloc(w) failed.");
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index 6bcf417..45a543e 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -67,7 +67,7 @@ static struct drbd_request *drbd_req_new(struct drbd_conf *mdev,

drbd_req_make_private_bio(req, bio_src);
req->rq_state = bio_data_dir(bio_src) == WRITE ? RQ_WRITE : 0;
- req->mdev = mdev;
+ req->w.mdev = mdev;
req->master_bio = bio_src;
req->epoch = 0;

@@ -155,6 +155,7 @@ static void queue_barrier(struct drbd_conf *mdev)

b = mdev->tconn->newest_tle;
b->w.cb = w_send_barrier;
+ b->w.mdev = mdev;
/* inc_ap_pending done here, so we won't
* get imbalanced on connection loss.
* dec_ap_pending will be done in got_BarrierAck
@@ -192,7 +193,7 @@ void complete_master_bio(struct drbd_conf *mdev,
static void drbd_remove_request_interval(struct rb_root *root,
struct drbd_request *req)
{
- struct drbd_conf *mdev = req->mdev;
+ struct drbd_conf *mdev = req->w.mdev;
struct drbd_interval *i = &req->i;

drbd_remove_interval(root, i);
@@ -211,7 +212,7 @@ static void drbd_remove_request_interval(struct rb_root *root,
void _req_may_be_done(struct drbd_request *req, struct bio_and_error *m)
{
const unsigned long s = req->rq_state;
- struct drbd_conf *mdev = req->mdev;
+ struct drbd_conf *mdev = req->w.mdev;
/* only WRITES may end up here without a master bio (on barrier ack) */
int rw = req->master_bio ? bio_data_dir(req->master_bio) : WRITE;

@@ -294,7 +295,7 @@ void _req_may_be_done(struct drbd_request *req, struct bio_and_error *m)

static void _req_may_be_done_not_susp(struct drbd_request *req, struct bio_and_error *m)
{
- struct drbd_conf *mdev = req->mdev;
+ struct drbd_conf *mdev = req->w.mdev;

if (!is_susp(mdev->state))
_req_may_be_done(req, m);
@@ -315,7 +316,7 @@ static void _req_may_be_done_not_susp(struct drbd_request *req, struct bio_and_e
int __req_mod(struct drbd_request *req, enum drbd_req_event what,
struct bio_and_error *m)
{
- struct drbd_conf *mdev = req->mdev;
+ struct drbd_conf *mdev = req->w.mdev;
int rv = 0;
m->bio = NULL;

diff --git a/drivers/block/drbd/drbd_req.h b/drivers/block/drbd/drbd_req.h
index 431e3f9..e6232ce 100644
--- a/drivers/block/drbd/drbd_req.h
+++ b/drivers/block/drbd/drbd_req.h
@@ -255,7 +255,7 @@ extern void tl_restart(struct drbd_conf *mdev, enum drbd_req_event what);
* outside the spinlock, e.g. when walking some list on cleanup. */
static inline int _req_mod(struct drbd_request *req, enum drbd_req_event what)
{
- struct drbd_conf *mdev = req->mdev;
+ struct drbd_conf *mdev = req->w.mdev;
struct bio_and_error m;
int rv;

@@ -275,7 +275,7 @@ static inline int req_mod(struct drbd_request *req,
enum drbd_req_event what)
{
unsigned long flags;
- struct drbd_conf *mdev = req->mdev;
+ struct drbd_conf *mdev = req->w.mdev;
struct bio_and_error m;
int rv;

diff --git a/drivers/block/drbd/drbd_state.c b/drivers/block/drbd/drbd_state.c
index 38d330b..3667984 100644
--- a/drivers/block/drbd/drbd_state.c
+++ b/drivers/block/drbd/drbd_state.c
@@ -843,6 +843,7 @@ __drbd_set_state(struct drbd_conf *mdev, union drbd_state ns,
ascw->ns = ns;
ascw->flags = flags;
ascw->w.cb = w_after_state_ch;
+ ascw->w.mdev = mdev;
ascw->done = done;
drbd_queue_work(&mdev->tconn->data.work, &ascw->w);
} else {
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index 16db1f4..cac65f6 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -83,7 +83,7 @@ void drbd_md_io_complete(struct bio *bio, int error)
void drbd_endio_read_sec_final(struct drbd_peer_request *peer_req) __releases(local)
{
unsigned long flags = 0;
- struct drbd_conf *mdev = peer_req->mdev;
+ struct drbd_conf *mdev = peer_req->w.mdev;

spin_lock_irqsave(&mdev->tconn->req_lock, flags);
mdev->read_cnt += peer_req->i.size >> 9;
@@ -103,7 +103,7 @@ void drbd_endio_read_sec_final(struct drbd_peer_request *peer_req) __releases(lo
static void drbd_endio_write_sec_final(struct drbd_peer_request *peer_req) __releases(local)
{
unsigned long flags = 0;
- struct drbd_conf *mdev = peer_req->mdev;
+ struct drbd_conf *mdev = peer_req->w.mdev;
sector_t e_sector;
int do_wake;
u64 block_id;
@@ -155,7 +155,7 @@ static void drbd_endio_write_sec_final(struct drbd_peer_request *peer_req) __rel
void drbd_endio_sec(struct bio *bio, int error)
{
struct drbd_peer_request *peer_req = bio->bi_private;
- struct drbd_conf *mdev = peer_req->mdev;
+ struct drbd_conf *mdev = peer_req->w.mdev;
int uptodate = bio_flagged(bio, BIO_UPTODATE);
int is_write = bio_data_dir(bio) == WRITE;

@@ -192,7 +192,7 @@ void drbd_endio_pri(struct bio *bio, int error)
{
unsigned long flags;
struct drbd_request *req = bio->bi_private;
- struct drbd_conf *mdev = req->mdev;
+ struct drbd_conf *mdev = req->w.mdev;
struct bio_and_error m;
enum drbd_req_event what;
int uptodate = bio_flagged(bio, BIO_UPTODATE);
--
1.7.4.1