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authorPhilipp Reisner <philipp.reisner@linbit.com>2010-05-25 14:32:03 +0200
committerJens Axboe <jaxboe@fusionio.com>2010-06-01 11:12:26 +0200
commit2c8d196759054b632788633b20e39167df36041d (patch)
treed4e5016e6d796b748f43ff7fca21045c6c890a5b /drivers/block
parentb7c335713ea130d707c22d7f7c57a8eca75ded7e (diff)
downloadop-kernel-dev-2c8d196759054b632788633b20e39167df36041d.zip
op-kernel-dev-2c8d196759054b632788633b20e39167df36041d.tar.gz
drbd: Revert "drbd: Create new current UUID as late as possible"
The late-UUID writing is delayed until the next release. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/drbd/drbd_int.h9
-rw-r--r--drivers/block/drbd/drbd_main.c34
-rw-r--r--drivers/block/drbd/drbd_receiver.c11
3 files changed, 7 insertions, 47 deletions
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index e9654c8..c194348 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -943,8 +943,7 @@ struct drbd_conf {
struct drbd_work resync_work,
unplug_work,
md_sync_work,
- delay_probe_work,
- uuid_work;
+ delay_probe_work;
struct timer_list resync_timer;
struct timer_list md_sync_timer;
struct timer_list delay_probe_timer;
@@ -1069,7 +1068,6 @@ struct drbd_conf {
struct timeval dps_time; /* delay-probes-start-time */
unsigned int dp_volume_last; /* send_cnt of last delay probe */
int c_sync_rate; /* current resync rate after delay_probe magic */
- atomic_t new_c_uuid;
};
static inline struct drbd_conf *minor_to_mdev(unsigned int minor)
@@ -2219,8 +2217,6 @@ static inline int __inc_ap_bio_cond(struct drbd_conf *mdev)
return 0;
if (test_bit(BITMAP_IO, &mdev->flags))
return 0;
- if (atomic_read(&mdev->new_c_uuid))
- return 0;
return 1;
}
@@ -2241,9 +2237,6 @@ static inline void inc_ap_bio(struct drbd_conf *mdev, int count)
* to avoid races with the reconnect code,
* we need to atomic_inc within the spinlock. */
- if (atomic_read(&mdev->new_c_uuid) && atomic_add_unless(&mdev->new_c_uuid, -1, 1))
- drbd_queue_work_front(&mdev->data.work, &mdev->uuid_work);
-
spin_lock_irq(&mdev->req_lock);
while (!__inc_ap_bio_cond(mdev)) {
prepare_to_wait(&mdev->misc_wait, &wait, TASK_UNINTERRUPTIBLE);
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index be2d2da..1fcf2d1 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1215,18 +1215,17 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os,
ns.pdsk == D_OUTDATED)) {
if (get_ldev(mdev)) {
if ((ns.role == R_PRIMARY || ns.peer == R_PRIMARY) &&
- mdev->ldev->md.uuid[UI_BITMAP] == 0 && ns.disk >= D_UP_TO_DATE &&
- !atomic_read(&mdev->new_c_uuid))
- atomic_set(&mdev->new_c_uuid, 2);
+ mdev->ldev->md.uuid[UI_BITMAP] == 0 && ns.disk >= D_UP_TO_DATE) {
+ drbd_uuid_new_current(mdev);
+ drbd_send_uuids(mdev);
+ }
put_ldev(mdev);
}
}
if (ns.pdsk < D_INCONSISTENT && get_ldev(mdev)) {
- /* Diskless peer becomes primary or got connected do diskless, primary peer. */
- if (ns.peer == R_PRIMARY && mdev->ldev->md.uuid[UI_BITMAP] == 0 &&
- !atomic_read(&mdev->new_c_uuid))
- atomic_set(&mdev->new_c_uuid, 2);
+ if (ns.peer == R_PRIMARY && mdev->ldev->md.uuid[UI_BITMAP] == 0)
+ drbd_uuid_new_current(mdev);
/* D_DISKLESS Peer becomes secondary */
if (os.peer == R_PRIMARY && ns.peer == R_SECONDARY)
@@ -1350,24 +1349,6 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os,
drbd_md_sync(mdev);
}
-static int w_new_current_uuid(struct drbd_conf *mdev, struct drbd_work *w, int cancel)
-{
- if (get_ldev(mdev)) {
- if (mdev->ldev->md.uuid[UI_BITMAP] == 0) {
- drbd_uuid_new_current(mdev);
- if (get_net_conf(mdev)) {
- drbd_send_uuids(mdev);
- put_net_conf(mdev);
- }
- drbd_md_sync(mdev);
- }
- put_ldev(mdev);
- }
- atomic_dec(&mdev->new_c_uuid);
- wake_up(&mdev->misc_wait);
-
- return 1;
-}
static int drbd_thread_setup(void *arg)
{
@@ -2708,7 +2689,6 @@ void drbd_init_set_defaults(struct drbd_conf *mdev)
atomic_set(&mdev->net_cnt, 0);
atomic_set(&mdev->packet_seq, 0);
atomic_set(&mdev->pp_in_use, 0);
- atomic_set(&mdev->new_c_uuid, 0);
mutex_init(&mdev->md_io_mutex);
mutex_init(&mdev->data.mutex);
@@ -2739,14 +2719,12 @@ void drbd_init_set_defaults(struct drbd_conf *mdev)
INIT_LIST_HEAD(&mdev->bm_io_work.w.list);
INIT_LIST_HEAD(&mdev->delay_probes);
INIT_LIST_HEAD(&mdev->delay_probe_work.list);
- INIT_LIST_HEAD(&mdev->uuid_work.list);
mdev->resync_work.cb = w_resync_inactive;
mdev->unplug_work.cb = w_send_write_hint;
mdev->md_sync_work.cb = w_md_sync;
mdev->bm_io_work.w.cb = w_bitmap_io;
mdev->delay_probe_work.cb = w_delay_probes;
- mdev->uuid_work.cb = w_new_current_uuid;
init_timer(&mdev->resync_timer);
init_timer(&mdev->md_sync_timer);
init_timer(&mdev->delay_probe_timer);
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index bc9ab7f..a56340d 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -1154,17 +1154,6 @@ int drbd_submit_ee(struct drbd_conf *mdev, struct drbd_epoch_entry *e,
unsigned n_bios = 0;
unsigned nr_pages = (ds + PAGE_SIZE -1) >> PAGE_SHIFT;
- if (atomic_read(&mdev->new_c_uuid)) {
- if (atomic_add_unless(&mdev->new_c_uuid, -1, 1)) {
- drbd_uuid_new_current(mdev);
- drbd_md_sync(mdev);
-
- atomic_dec(&mdev->new_c_uuid);
- wake_up(&mdev->misc_wait);
- }
- wait_event(mdev->misc_wait, !atomic_read(&mdev->new_c_uuid));
- }
-
/* In most cases, we will only need one bio. But in case the lower
* level restrictions happen to be different at this offset on this
* side than those of the sending peer, we may need to submit the
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