summaryrefslogtreecommitdiff
path: root/drivers/block/drbd/drbd_actlog.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/block/drbd/drbd_actlog.c')
-rw-r--r--drivers/block/drbd/drbd_actlog.c544
1 files changed, 272 insertions, 272 deletions
diff --git a/drivers/block/drbd/drbd_actlog.c b/drivers/block/drbd/drbd_actlog.c
index 16041f8e2a60..b33836d72f3c 100644
--- a/drivers/block/drbd/drbd_actlog.c
+++ b/drivers/block/drbd/drbd_actlog.c
@@ -105,24 +105,24 @@ struct update_al_work {
};
-void *drbd_md_get_buffer(struct drbd_device *mdev)
+void *drbd_md_get_buffer(struct drbd_device *device)
{
int r;
- wait_event(mdev->misc_wait,
- (r = atomic_cmpxchg(&mdev->md_io_in_use, 0, 1)) == 0 ||
- mdev->state.disk <= D_FAILED);
+ wait_event(device->misc_wait,
+ (r = atomic_cmpxchg(&device->md_io_in_use, 0, 1)) == 0 ||
+ device->state.disk <= D_FAILED);
- return r ? NULL : page_address(mdev->md_io_page);
+ return r ? NULL : page_address(device->md_io_page);
}
-void drbd_md_put_buffer(struct drbd_device *mdev)
+void drbd_md_put_buffer(struct drbd_device *device)
{
- if (atomic_dec_and_test(&mdev->md_io_in_use))
- wake_up(&mdev->misc_wait);
+ if (atomic_dec_and_test(&device->md_io_in_use))
+ wake_up(&device->misc_wait);
}
-void wait_until_done_or_force_detached(struct drbd_device *mdev, struct drbd_backing_dev *bdev,
+void wait_until_done_or_force_detached(struct drbd_device *device, struct drbd_backing_dev *bdev,
unsigned int *done)
{
long dt;
@@ -134,15 +134,15 @@ void wait_until_done_or_force_detached(struct drbd_device *mdev, struct drbd_bac
if (dt == 0)
dt = MAX_SCHEDULE_TIMEOUT;
- dt = wait_event_timeout(mdev->misc_wait,
- *done || test_bit(FORCE_DETACH, &mdev->flags), dt);
+ dt = wait_event_timeout(device->misc_wait,
+ *done || test_bit(FORCE_DETACH, &device->flags), dt);
if (dt == 0) {
dev_err(DEV, "meta-data IO operation timed out\n");
- drbd_chk_io_error(mdev, 1, DRBD_FORCE_DETACH);
+ drbd_chk_io_error(device, 1, DRBD_FORCE_DETACH);
}
}
-static int _drbd_md_sync_page_io(struct drbd_device *mdev,
+static int _drbd_md_sync_page_io(struct drbd_device *device,
struct drbd_backing_dev *bdev,
struct page *page, sector_t sector,
int rw, int size)
@@ -150,10 +150,10 @@ static int _drbd_md_sync_page_io(struct drbd_device *mdev,
struct bio *bio;
int err;
- mdev->md_io.done = 0;
- mdev->md_io.error = -ENODEV;
+ device->md_io.done = 0;
+ device->md_io.error = -ENODEV;
- if ((rw & WRITE) && !test_bit(MD_NO_FUA, &mdev->flags))
+ if ((rw & WRITE) && !test_bit(MD_NO_FUA, &device->flags))
rw |= REQ_FUA | REQ_FLUSH;
rw |= REQ_SYNC;
@@ -163,14 +163,14 @@ static int _drbd_md_sync_page_io(struct drbd_device *mdev,
err = -EIO;
if (bio_add_page(bio, page, size, 0) != size)
goto out;
- bio->bi_private = &mdev->md_io;
+ bio->bi_private = &device->md_io;
bio->bi_end_io = drbd_md_io_complete;
bio->bi_rw = rw;
- if (!(rw & WRITE) && mdev->state.disk == D_DISKLESS && mdev->ldev == NULL)
+ if (!(rw & WRITE) && device->state.disk == D_DISKLESS && device->ldev == NULL)
/* special case, drbd_md_read() during drbd_adm_attach(): no get_ldev */
;
- else if (!get_ldev_if_state(mdev, D_ATTACHING)) {
+ else if (!get_ldev_if_state(device, D_ATTACHING)) {
/* Corresponding put_ldev in drbd_md_io_complete() */
dev_err(DEV, "ASSERT FAILED: get_ldev_if_state() == 1 in _drbd_md_sync_page_io()\n");
err = -ENODEV;
@@ -178,27 +178,27 @@ static int _drbd_md_sync_page_io(struct drbd_device *mdev,
}
bio_get(bio); /* one bio_put() is in the completion handler */
- atomic_inc(&mdev->md_io_in_use); /* drbd_md_put_buffer() is in the completion handler */
- if (drbd_insert_fault(mdev, (rw & WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD))
+ atomic_inc(&device->md_io_in_use); /* drbd_md_put_buffer() is in the completion handler */
+ if (drbd_insert_fault(device, (rw & WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD))
bio_endio(bio, -EIO);
else
submit_bio(rw, bio);
- wait_until_done_or_force_detached(mdev, bdev, &mdev->md_io.done);
+ wait_until_done_or_force_detached(device, bdev, &device->md_io.done);
if (bio_flagged(bio, BIO_UPTODATE))
- err = mdev->md_io.error;
+ err = device->md_io.error;
out:
bio_put(bio);
return err;
}
-int drbd_md_sync_page_io(struct drbd_device *mdev, struct drbd_backing_dev *bdev,
+int drbd_md_sync_page_io(struct drbd_device *device, struct drbd_backing_dev *bdev,
sector_t sector, int rw)
{
int err;
- struct page *iop = mdev->md_io_page;
+ struct page *iop = device->md_io_page;
- D_ASSERT(atomic_read(&mdev->md_io_in_use) == 1);
+ D_ASSERT(atomic_read(&device->md_io_in_use) == 1);
BUG_ON(!bdev->md_bdev);
@@ -214,7 +214,7 @@ int drbd_md_sync_page_io(struct drbd_device *mdev, struct drbd_backing_dev *bdev
(unsigned long long)sector, (rw & WRITE) ? "WRITE" : "READ");
/* we do all our meta data IO in aligned 4k blocks. */
- err = _drbd_md_sync_page_io(mdev, bdev, iop, sector, rw, 4096);
+ err = _drbd_md_sync_page_io(device, bdev, iop, sector, rw, 4096);
if (err) {
dev_err(DEV, "drbd_md_sync_page_io(,%llus,%s) failed with error %d\n",
(unsigned long long)sector, (rw & WRITE) ? "WRITE" : "READ", err);
@@ -222,10 +222,10 @@ int drbd_md_sync_page_io(struct drbd_device *mdev, struct drbd_backing_dev *bdev
return err;
}
-static struct bm_extent *find_active_resync_extent(struct drbd_device *mdev, unsigned int enr)
+static struct bm_extent *find_active_resync_extent(struct drbd_device *device, unsigned int enr)
{
struct lc_element *tmp;
- tmp = lc_find(mdev->resync, enr/AL_EXT_PER_BM_SECT);
+ tmp = lc_find(device->resync, enr/AL_EXT_PER_BM_SECT);
if (unlikely(tmp != NULL)) {
struct bm_extent *bm_ext = lc_entry(tmp, struct bm_extent, lce);
if (test_bit(BME_NO_WRITES, &bm_ext->flags))
@@ -234,30 +234,30 @@ static struct bm_extent *find_active_resync_extent(struct drbd_device *mdev, uns
return NULL;
}
-static struct lc_element *_al_get(struct drbd_device *mdev, unsigned int enr, bool nonblock)
+static struct lc_element *_al_get(struct drbd_device *device, unsigned int enr, bool nonblock)
{
struct lc_element *al_ext;
struct bm_extent *bm_ext;
int wake;
- spin_lock_irq(&mdev->al_lock);
- bm_ext = find_active_resync_extent(mdev, enr);
+ spin_lock_irq(&device->al_lock);
+ bm_ext = find_active_resync_extent(device, enr);
if (bm_ext) {
wake = !test_and_set_bit(BME_PRIORITY, &bm_ext->flags);
- spin_unlock_irq(&mdev->al_lock);
+ spin_unlock_irq(&device->al_lock);
if (wake)
- wake_up(&mdev->al_wait);
+ wake_up(&device->al_wait);
return NULL;
}
if (nonblock)
- al_ext = lc_try_get(mdev->act_log, enr);
+ al_ext = lc_try_get(device->act_log, enr);
else
- al_ext = lc_get(mdev->act_log, enr);
- spin_unlock_irq(&mdev->al_lock);
+ al_ext = lc_get(device->act_log, enr);
+ spin_unlock_irq(&device->al_lock);
return al_ext;
}
-bool drbd_al_begin_io_fastpath(struct drbd_device *mdev, struct drbd_interval *i)
+bool drbd_al_begin_io_fastpath(struct drbd_device *device, struct drbd_interval *i)
{
/* for bios crossing activity log extent boundaries,
* we may need to activate two extents in one go */
@@ -265,17 +265,17 @@ bool drbd_al_begin_io_fastpath(struct drbd_device *mdev, struct drbd_interval *i
unsigned last = i->size == 0 ? first : (i->sector + (i->size >> 9) - 1) >> (AL_EXTENT_SHIFT-9);
D_ASSERT((unsigned)(last - first) <= 1);
- D_ASSERT(atomic_read(&mdev->local_cnt) > 0);
+ D_ASSERT(atomic_read(&device->local_cnt) > 0);
/* FIXME figure out a fast path for bios crossing AL extent boundaries */
if (first != last)
return false;
- return _al_get(mdev, first, true);
+ return _al_get(device, first, true);
}
static
-bool drbd_al_begin_io_prepare(struct drbd_device *mdev, struct drbd_interval *i)
+bool drbd_al_begin_io_prepare(struct drbd_device *device, struct drbd_interval *i)
{
/* for bios crossing activity log extent boundaries,
* we may need to activate two extents in one go */
@@ -285,19 +285,19 @@ bool drbd_al_begin_io_prepare(struct drbd_device *mdev, struct drbd_interval *i)
bool need_transaction = false;
D_ASSERT(first <= last);
- D_ASSERT(atomic_read(&mdev->local_cnt) > 0);
+ D_ASSERT(atomic_read(&device->local_cnt) > 0);
for (enr = first; enr <= last; enr++) {
struct lc_element *al_ext;
- wait_event(mdev->al_wait,
- (al_ext = _al_get(mdev, enr, false)) != NULL);
+ wait_event(device->al_wait,
+ (al_ext = _al_get(device, enr, false)) != NULL);
if (al_ext->lc_number != enr)
need_transaction = true;
}
return need_transaction;
}
-static int al_write_transaction(struct drbd_device *mdev, bool delegate);
+static int al_write_transaction(struct drbd_device *device, bool delegate);
/* When called through generic_make_request(), we must delegate
* activity log I/O to the worker thread: a further request
@@ -311,58 +311,58 @@ static int al_write_transaction(struct drbd_device *mdev, bool delegate);
/*
* @delegate: delegate activity log I/O to the worker thread
*/
-void drbd_al_begin_io_commit(struct drbd_device *mdev, bool delegate)
+void drbd_al_begin_io_commit(struct drbd_device *device, bool delegate)
{
bool locked = false;
- BUG_ON(delegate && current == mdev->tconn->worker.task);
+ BUG_ON(delegate && current == device->tconn->worker.task);
/* Serialize multiple transactions.
* This uses test_and_set_bit, memory barrier is implicit.
*/
- wait_event(mdev->al_wait,
- mdev->act_log->pending_changes == 0 ||
- (locked = lc_try_lock_for_transaction(mdev->act_log)));
+ wait_event(device->al_wait,
+ device->act_log->pending_changes == 0 ||
+ (locked = lc_try_lock_for_transaction(device->act_log)));
if (locked) {
/* Double check: it may have been committed by someone else,
* while we have been waiting for the lock. */
- if (mdev->act_log->pending_changes) {
+ if (device->act_log->pending_changes) {
bool write_al_updates;
rcu_read_lock();
- write_al_updates = rcu_dereference(mdev->ldev->disk_conf)->al_updates;
+ write_al_updates = rcu_dereference(device->ldev->disk_conf)->al_updates;
rcu_read_unlock();
if (write_al_updates)
- al_write_transaction(mdev, delegate);
- spin_lock_irq(&mdev->al_lock);
+ al_write_transaction(device, delegate);
+ spin_lock_irq(&device->al_lock);
/* FIXME
if (err)
we need an "lc_cancel" here;
*/
- lc_committed(mdev->act_log);
- spin_unlock_irq(&mdev->al_lock);
+ lc_committed(device->act_log);
+ spin_unlock_irq(&device->al_lock);
}
- lc_unlock(mdev->act_log);
- wake_up(&mdev->al_wait);
+ lc_unlock(device->act_log);
+ wake_up(&device->al_wait);
}
}
/*
* @delegate: delegate activity log I/O to the worker thread
*/
-void drbd_al_begin_io(struct drbd_device *mdev, struct drbd_interval *i, bool delegate)
+void drbd_al_begin_io(struct drbd_device *device, struct drbd_interval *i, bool delegate)
{
- BUG_ON(delegate && current == mdev->tconn->worker.task);
+ BUG_ON(delegate && current == device->tconn->worker.task);
- if (drbd_al_begin_io_prepare(mdev, i))
- drbd_al_begin_io_commit(mdev, delegate);
+ if (drbd_al_begin_io_prepare(device, i))
+ drbd_al_begin_io_commit(device, delegate);
}
-int drbd_al_begin_io_nonblock(struct drbd_device *mdev, struct drbd_interval *i)
+int drbd_al_begin_io_nonblock(struct drbd_device *device, struct drbd_interval *i)
{
- struct lru_cache *al = mdev->act_log;
+ struct lru_cache *al = device->act_log;
/* for bios crossing activity log extent boundaries,
* we may need to activate two extents in one go */
unsigned first = i->sector >> (AL_EXTENT_SHIFT-9);
@@ -386,7 +386,7 @@ int drbd_al_begin_io_nonblock(struct drbd_device *mdev, struct drbd_interval *i)
/* Is resync active in this area? */
for (enr = first; enr <= last; enr++) {
struct lc_element *tmp;
- tmp = lc_find(mdev->resync, enr/AL_EXT_PER_BM_SECT);
+ tmp = lc_find(device->resync, enr/AL_EXT_PER_BM_SECT);
if (unlikely(tmp != NULL)) {
struct bm_extent *bm_ext = lc_entry(tmp, struct bm_extent, lce);
if (test_bit(BME_NO_WRITES, &bm_ext->flags)) {
@@ -402,14 +402,14 @@ int drbd_al_begin_io_nonblock(struct drbd_device *mdev, struct drbd_interval *i)
* this has to be successful. */
for (enr = first; enr <= last; enr++) {
struct lc_element *al_ext;
- al_ext = lc_get_cumulative(mdev->act_log, enr);
+ al_ext = lc_get_cumulative(device->act_log, enr);
if (!al_ext)
dev_info(DEV, "LOGIC BUG for enr=%u\n", enr);
}
return 0;
}
-void drbd_al_complete_io(struct drbd_device *mdev, struct drbd_interval *i)
+void drbd_al_complete_io(struct drbd_device *device, struct drbd_interval *i)
{
/* for bios crossing activity log extent boundaries,
* we may need to activate two extents in one go */
@@ -420,18 +420,18 @@ void drbd_al_complete_io(struct drbd_device *mdev, struct drbd_interval *i)
unsigned long flags;
D_ASSERT(first <= last);
- spin_lock_irqsave(&mdev->al_lock, flags);
+ spin_lock_irqsave(&device->al_lock, flags);
for (enr = first; enr <= last; enr++) {
- extent = lc_find(mdev->act_log, enr);
+ extent = lc_find(device->act_log, enr);
if (!extent) {
dev_err(DEV, "al_complete_io() called on inactive extent %u\n", enr);
continue;
}
- lc_put(mdev->act_log, extent);
+ lc_put(device->act_log, extent);
}
- spin_unlock_irqrestore(&mdev->al_lock, flags);
- wake_up(&mdev->al_wait);
+ spin_unlock_irqrestore(&device->al_lock, flags);
+ wake_up(&device->al_wait);
}
#if (PAGE_SHIFT + 3) < (AL_EXTENT_SHIFT - BM_BLOCK_SHIFT)
@@ -461,13 +461,13 @@ static unsigned int rs_extent_to_bm_page(unsigned int rs_enr)
(BM_EXT_SHIFT - BM_BLOCK_SHIFT));
}
-static sector_t al_tr_number_to_on_disk_sector(struct drbd_device *mdev)
+static sector_t al_tr_number_to_on_disk_sector(struct drbd_device *device)
{
- const unsigned int stripes = mdev->ldev->md.al_stripes;
- const unsigned int stripe_size_4kB = mdev->ldev->md.al_stripe_size_4k;
+ const unsigned int stripes = device->ldev->md.al_stripes;
+ const unsigned int stripe_size_4kB = device->ldev->md.al_stripe_size_4k;
/* transaction number, modulo on-disk ring buffer wrap around */
- unsigned int t = mdev->al_tr_number % (mdev->ldev->md.al_size_4k);
+ unsigned int t = device->al_tr_number % (device->ldev->md.al_size_4k);
/* ... to aligned 4k on disk block */
t = ((t % stripes) * stripe_size_4kB) + t/stripes;
@@ -476,11 +476,11 @@ static sector_t al_tr_number_to_on_disk_sector(struct drbd_device *mdev)
t *= 8;
/* ... plus offset to the on disk position */
- return mdev->ldev->md.md_offset + mdev->ldev->md.al_offset + t;
+ return device->ldev->md.md_offset + device->ldev->md.al_offset + t;
}
static int
-_al_write_transaction(struct drbd_device *mdev)
+_al_write_transaction(struct drbd_device *device)
{
struct al_transaction_on_disk *buffer;
struct lc_element *e;
@@ -490,31 +490,31 @@ _al_write_transaction(struct drbd_device *mdev)
unsigned crc = 0;
int err = 0;
- if (!get_ldev(mdev)) {
+ if (!get_ldev(device)) {
dev_err(DEV, "disk is %s, cannot start al transaction\n",
- drbd_disk_str(mdev->state.disk));
+ drbd_disk_str(device->state.disk));
return -EIO;
}
/* The bitmap write may have failed, causing a state change. */
- if (mdev->state.disk < D_INCONSISTENT) {
+ if (device->state.disk < D_INCONSISTENT) {
dev_err(DEV,
"disk is %s, cannot write al transaction\n",
- drbd_disk_str(mdev->state.disk));
- put_ldev(mdev);
+ drbd_disk_str(device->state.disk));
+ put_ldev(device);
return -EIO;
}
- buffer = drbd_md_get_buffer(mdev); /* protects md_io_buffer, al_tr_cycle, ... */
+ buffer = drbd_md_get_buffer(device); /* protects md_io_buffer, al_tr_cycle, ... */
if (!buffer) {
dev_err(DEV, "disk failed while waiting for md_io buffer\n");
- put_ldev(mdev);
+ put_ldev(device);
return -ENODEV;
}
memset(buffer, 0, sizeof(*buffer));
buffer->magic = cpu_to_be32(DRBD_AL_MAGIC);
- buffer->tr_number = cpu_to_be32(mdev->al_tr_number);
+ buffer->tr_number = cpu_to_be32(device->al_tr_number);
i = 0;
@@ -522,8 +522,8 @@ _al_write_transaction(struct drbd_device *mdev)
* once we set the LC_LOCKED -- from drbd_al_begin_io(),
* lc_try_lock_for_transaction() --, someone may still
* be in the process of changing it. */
- spin_lock_irq(&mdev->al_lock);
- list_for_each_entry(e, &mdev->act_log->to_be_changed, list) {
+ spin_lock_irq(&device->al_lock);
+ list_for_each_entry(e, &device->act_log->to_be_changed, list) {
if (i == AL_UPDATES_PER_TRANSACTION) {
i++;
break;
@@ -531,11 +531,11 @@ _al_write_transaction(struct drbd_device *mdev)
buffer->update_slot_nr[i] = cpu_to_be16(e->lc_index);
buffer->update_extent_nr[i] = cpu_to_be32(e->lc_new_number);
if (e->lc_number != LC_FREE)
- drbd_bm_mark_for_writeout(mdev,
+ drbd_bm_mark_for_writeout(device,
al_extent_to_bm_page(e->lc_number));
i++;
}
- spin_unlock_irq(&mdev->al_lock);
+ spin_unlock_irq(&device->al_lock);
BUG_ON(i > AL_UPDATES_PER_TRANSACTION);
buffer->n_updates = cpu_to_be16(i);
@@ -544,48 +544,48 @@ _al_write_transaction(struct drbd_device *mdev)
buffer->update_extent_nr[i] = cpu_to_be32(LC_FREE);
}
- buffer->context_size = cpu_to_be16(mdev->act_log->nr_elements);
- buffer->context_start_slot_nr = cpu_to_be16(mdev->al_tr_cycle);
+ buffer->context_size = cpu_to_be16(device->act_log->nr_elements);
+ buffer->context_start_slot_nr = cpu_to_be16(device->al_tr_cycle);
mx = min_t(int, AL_CONTEXT_PER_TRANSACTION,
- mdev->act_log->nr_elements - mdev->al_tr_cycle);
+ device->act_log->nr_elements - device->al_tr_cycle);
for (i = 0; i < mx; i++) {
- unsigned idx = mdev->al_tr_cycle + i;
- extent_nr = lc_element_by_index(mdev->act_log, idx)->lc_number;
+ unsigned idx = device->al_tr_cycle + i;
+ extent_nr = lc_element_by_index(device->act_log, idx)->lc_number;
buffer->context[i] = cpu_to_be32(extent_nr);
}
for (; i < AL_CONTEXT_PER_TRANSACTION; i++)
buffer->context[i] = cpu_to_be32(LC_FREE);
- mdev->al_tr_cycle += AL_CONTEXT_PER_TRANSACTION;
- if (mdev->al_tr_cycle >= mdev->act_log->nr_elements)
- mdev->al_tr_cycle = 0;
+ device->al_tr_cycle += AL_CONTEXT_PER_TRANSACTION;
+ if (device->al_tr_cycle >= device->act_log->nr_elements)
+ device->al_tr_cycle = 0;
- sector = al_tr_number_to_on_disk_sector(mdev);
+ sector = al_tr_number_to_on_disk_sector(device);
crc = crc32c(0, buffer, 4096);
buffer->crc32c = cpu_to_be32(crc);
- if (drbd_bm_write_hinted(mdev))
+ if (drbd_bm_write_hinted(device))
err = -EIO;
else {
bool write_al_updates;
rcu_read_lock();
- write_al_updates = rcu_dereference(mdev->ldev->disk_conf)->al_updates;
+ write_al_updates = rcu_dereference(device->ldev->disk_conf)->al_updates;
rcu_read_unlock();
if (write_al_updates) {
- if (drbd_md_sync_page_io(mdev, mdev->ldev, sector, WRITE)) {
+ if (drbd_md_sync_page_io(device, device->ldev, sector, WRITE)) {
err = -EIO;
- drbd_chk_io_error(mdev, 1, DRBD_META_IO_ERROR);
+ drbd_chk_io_error(device, 1, DRBD_META_IO_ERROR);
} else {
- mdev->al_tr_number++;
- mdev->al_writ_cnt++;
+ device->al_tr_number++;
+ device->al_writ_cnt++;
}
}
}
- drbd_md_put_buffer(mdev);
- put_ldev(mdev);
+ drbd_md_put_buffer(device);
+ put_ldev(device);
return err;
}
@@ -594,10 +594,10 @@ _al_write_transaction(struct drbd_device *mdev)
static int w_al_write_transaction(struct drbd_work *w, int unused)
{
struct update_al_work *aw = container_of(w, struct update_al_work, w);
- struct drbd_device *mdev = w->mdev;
+ struct drbd_device *device = w->device;
int err;
- err = _al_write_transaction(mdev);
+ err = _al_write_transaction(device);
aw->err = err;
complete(&aw->event);
@@ -607,63 +607,63 @@ static int w_al_write_transaction(struct drbd_work *w, int unused)
/* Calls from worker context (see w_restart_disk_io()) need to write the
transaction directly. Others came through generic_make_request(),
those need to delegate it to the worker. */
-static int al_write_transaction(struct drbd_device *mdev, bool delegate)
+static int al_write_transaction(struct drbd_device *device, bool delegate)
{
if (delegate) {
struct update_al_work al_work;
init_completion(&al_work.event);
al_work.w.cb = w_al_write_transaction;
- al_work.w.mdev = mdev;
- drbd_queue_work_front(&mdev->tconn->sender_work, &al_work.w);
+ al_work.w.device = device;
+ drbd_queue_work_front(&device->tconn->sender_work, &al_work.w);
wait_for_completion(&al_work.event);
return al_work.err;
} else
- return _al_write_transaction(mdev);
+ return _al_write_transaction(device);
}
-static int _try_lc_del(struct drbd_device *mdev, struct lc_element *al_ext)
+static int _try_lc_del(struct drbd_device *device, struct lc_element *al_ext)
{
int rv;
- spin_lock_irq(&mdev->al_lock);
+ spin_lock_irq(&device->al_lock);
rv = (al_ext->refcnt == 0);
if (likely(rv))
- lc_del(mdev->act_log, al_ext);
- spin_unlock_irq(&mdev->al_lock);
+ lc_del(device->act_log, al_ext);
+ spin_unlock_irq(&device->al_lock);
return rv;
}
/**
* drbd_al_shrink() - Removes all active extents form the activity log
- * @mdev: DRBD device.
+ * @device: DRBD device.
*
* Removes all active extents form the activity log, waiting until
* the reference count of each entry dropped to 0 first, of course.
*
- * You need to lock mdev->act_log with lc_try_lock() / lc_unlock()
+ * You need to lock device->act_log with lc_try_lock() / lc_unlock()
*/
-void drbd_al_shrink(struct drbd_device *mdev)
+void drbd_al_shrink(struct drbd_device *device)
{
struct lc_element *al_ext;
int i;
- D_ASSERT(test_bit(__LC_LOCKED, &mdev->act_log->flags));
+ D_ASSERT(test_bit(__LC_LOCKED, &device->act_log->flags));
- for (i = 0; i < mdev->act_log->nr_elements; i++) {
- al_ext = lc_element_by_index(mdev->act_log, i);
+ for (i = 0; i < device->act_log->nr_elements; i++) {
+ al_ext = lc_element_by_index(device->act_log, i);
if (al_ext->lc_number == LC_FREE)
continue;
- wait_event(mdev->al_wait, _try_lc_del(mdev, al_ext));
+ wait_event(device->al_wait, _try_lc_del(device, al_ext));
}
- wake_up(&mdev->al_wait);
+ wake_up(&device->al_wait);
}
-int drbd_initialize_al(struct drbd_device *mdev, void *buffer)
+int drbd_initialize_al(struct drbd_device *device, void *buffer)
{
struct al_transaction_on_disk *al = buffer;
- struct drbd_md *md = &mdev->ldev->md;
+ struct drbd_md *md = &device->ldev->md;
sector_t al_base = md->md_offset + md->al_offset;
int al_size_4k = md->al_stripes * md->al_stripe_size_4k;
int i;
@@ -674,7 +674,7 @@ int drbd_initialize_al(struct drbd_device *mdev, void *buffer)
al->crc32c = cpu_to_be32(crc32c(0, al, 4096));
for (i = 0; i < al_size_4k; i++) {
- int err = drbd_md_sync_page_io(mdev, mdev->ldev, al_base + i * 8, WRITE);
+ int err = drbd_md_sync_page_io(device, device->ldev, al_base + i * 8, WRITE);
if (err)
return err;
}
@@ -684,32 +684,32 @@ int drbd_initialize_al(struct drbd_device *mdev, void *buffer)
static int w_update_odbm(struct drbd_work *w, int unused)
{
struct update_odbm_work *udw = container_of(w, struct update_odbm_work, w);
- struct drbd_device *mdev = w->mdev;
+ struct drbd_device *device = w->device;
struct sib_info sib = { .sib_reason = SIB_SYNC_PROGRESS, };
- if (!get_ldev(mdev)) {
+ if (!get_ldev(device)) {
if (__ratelimit(&drbd_ratelimit_state))
dev_warn(DEV, "Can not update on disk bitmap, local IO disabled.\n");
kfree(udw);
return 0;
}
- drbd_bm_write_page(mdev, rs_extent_to_bm_page(udw->enr));
- put_ldev(mdev);
+ drbd_bm_write_page(device, rs_extent_to_bm_page(udw->enr));
+ put_ldev(device);
kfree(udw);
- if (drbd_bm_total_weight(mdev) <= mdev->rs_failed) {
- switch (mdev->state.conn) {
+ if (drbd_bm_total_weight(device) <= device->rs_failed) {
+ switch (device->state.conn) {
case C_SYNC_SOURCE: case C_SYNC_TARGET:
case C_PAUSED_SYNC_S: case C_PAUSED_SYNC_T:
- drbd_resync_finished(mdev);
+ drbd_resync_finished(device);
default:
/* nothing to do */
break;
}
}
- drbd_bcast_event(mdev, &sib);
+ drbd_bcast_event(device, &sib);
return 0;
}
@@ -721,7 +721,7 @@ static int w_update_odbm(struct drbd_work *w, int unused)
*
* TODO will be obsoleted once we have a caching lru of the on disk bitmap
*/
-static void drbd_try_clear_on_disk_bm(struct drbd_device *mdev, sector_t sector,
+static void drbd_try_clear_on_disk_bm(struct drbd_device *device, sector_t sector,
int count, int success)
{
struct lc_element *e;
@@ -729,13 +729,13 @@ static void drbd_try_clear_on_disk_bm(struct drbd_device *mdev, sector_t sector,
unsigned int enr;
- D_ASSERT(atomic_read(&mdev->local_cnt));
+ D_ASSERT(atomic_read(&device->local_cnt));
/* I simply assume that a sector/size pair never crosses
* a 16 MB extent border. (Currently this is true...) */
enr = BM_SECT_TO_EXT(sector);
- e = lc_get(mdev->resync, enr);
+ e = lc_get(device->resync, enr);
if (e) {
struct bm_extent *ext = lc_entry(e, struct bm_extent, lce);
if (ext->lce.lc_number == enr) {
@@ -749,7 +749,7 @@ static void drbd_try_clear_on_disk_bm(struct drbd_device *mdev, sector_t sector,
(unsigned long long)sector,
ext->lce.lc_number, ext->rs_left,
ext->rs_failed, count,
- drbd_conn_str(mdev->state.conn));
+ drbd_conn_str(device->state.conn));
/* We don't expect to be able to clear more bits
* than have been set when we originally counted
@@ -757,7 +757,7 @@ static void drbd_try_clear_on_disk_bm(struct drbd_device *mdev, sector_t sector,
* Whatever the reason (disconnect during resync,
* delayed local completion of an application write),
* try to fix it up by recounting here. */
- ext->rs_left = drbd_bm_e_weight(mdev, enr);
+ ext->rs_left = drbd_bm_e_weight(device, enr);
}
} else {
/* Normally this element should be in the cache,
@@ -766,7 +766,7 @@ static void drbd_try_clear_on_disk_bm(struct drbd_device *mdev, sector_t sector,
* But maybe an application write finished, and we set
* something outside the resync lru_cache in sync.
*/
- int rs_left = drbd_bm_e_weight(mdev, enr);
+ int rs_left = drbd_bm_e_weight(device, enr);
if (ext->flags != 0) {
dev_warn(DEV, "changing resync lce: %d[%u;%02lx]"
" -> %d[%u;00]\n",
@@ -783,9 +783,9 @@ static void drbd_try_clear_on_disk_bm(struct drbd_device *mdev, sector_t sector,
ext->rs_failed = success ? 0 : count;
/* we don't keep a persistent log of the resync lru,
* we can commit any change right away. */
- lc_committed(mdev->resync);
+ lc_committed(device->resync);
}
- lc_put(mdev->resync, &ext->lce);
+ lc_put(device->resync, &ext->lce);
/* no race, we are within the al_lock! */
if (ext->rs_left == ext->rs_failed) {
@@ -795,32 +795,32 @@ static void drbd_try_clear_on_disk_bm(struct drbd_device *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->sender_work, &udw->w);
+ udw->w.device = device;
+ drbd_queue_work_front(&device->tconn->sender_work, &udw->w);
} else {
dev_warn(DEV, "Could not kmalloc an udw\n");
}
}
} else {
dev_err(DEV, "lc_get() failed! locked=%d/%d flags=%lu\n",
- mdev->resync_locked,
- mdev->resync->nr_elements,
- mdev->resync->flags);
+ device->resync_locked,
+ device->resync->nr_elements,
+ device->resync->flags);
}
}
-void drbd_advance_rs_marks(struct drbd_device *mdev, unsigned long still_to_go)
+void drbd_advance_rs_marks(struct drbd_device *device, unsigned long still_to_go)
{
unsigned long now = jiffies;
- unsigned long last = mdev->rs_mark_time[mdev->rs_last_mark];
- int next = (mdev->rs_last_mark + 1) % DRBD_SYNC_MARKS;
+ unsigned long last = device->rs_mark_time[device->rs_last_mark];
+ int next = (device->rs_last_mark + 1) % DRBD_SYNC_MARKS;
if (time_after_eq(now, last + DRBD_SYNC_MARK_STEP)) {
- if (mdev->rs_mark_left[mdev->rs_last_mark] != still_to_go &&
- mdev->state.conn != C_PAUSED_SYNC_T &&
- mdev->state.conn != C_PAUSED_SYNC_S) {
- mdev->rs_mark_time[next] = now;
- mdev->rs_mark_left[next] = still_to_go;
- mdev->rs_last_mark = next;
+ if (device->rs_mark_left[device->rs_last_mark] != still_to_go &&
+ device->state.conn != C_PAUSED_SYNC_T &&
+ device->state.conn != C_PAUSED_SYNC_S) {
+ device->rs_mark_time[next] = now;
+ device->rs_mark_left[next] = still_to_go;
+ device->rs_last_mark = next;
}
}
}
@@ -832,7 +832,7 @@ void drbd_advance_rs_marks(struct drbd_device *mdev, unsigned long still_to_go)
* called by worker on C_SYNC_TARGET and receiver on SyncSource.
*
*/
-void __drbd_set_in_sync(struct drbd_device *mdev, sector_t sector, int size,
+void __drbd_set_in_sync(struct drbd_device *device, sector_t sector, int size,
const char *file, const unsigned int line)
{
/* Is called from worker and receiver context _only_ */
@@ -848,10 +848,10 @@ void __drbd_set_in_sync(struct drbd_device *mdev, sector_t sector, int size,
return;
}
- if (!get_ldev(mdev))
+ if (!get_ldev(device))
return; /* no disk, no metadata, no bitmap to clear bits in */
- nr_sectors = drbd_get_capacity(mdev->this_bdev);
+ nr_sectors = drbd_get_capacity(device->this_bdev);
esector = sector + (size >> 9) - 1;
if (!expect(sector < nr_sectors))
@@ -879,21 +879,21 @@ void __drbd_set_in_sync(struct drbd_device *mdev, sector_t sector, int size,
* ok, (capacity & 7) != 0 sometimes, but who cares...
* we count rs_{total,left} in bits, not sectors.
*/
- count = drbd_bm_clear_bits(mdev, sbnr, ebnr);
+ count = drbd_bm_clear_bits(device, sbnr, ebnr);
if (count) {
- drbd_advance_rs_marks(mdev, drbd_bm_total_weight(mdev));
- spin_lock_irqsave(&mdev->al_lock, flags);
- drbd_try_clear_on_disk_bm(mdev, sector, count, true);
- spin_unlock_irqrestore(&mdev->al_lock, flags);
+ drbd_advance_rs_marks(device, drbd_bm_total_weight(device));
+ spin_lock_irqsave(&device->al_lock, flags);
+ drbd_try_clear_on_disk_bm(device, sector, count, true);
+ spin_unlock_irqrestore(&device->al_lock, flags);
/* just wake_up unconditional now, various lc_chaged(),
* lc_put() in drbd_try_clear_on_disk_bm(). */
wake_up = 1;
}
out:
- put_ldev(mdev);
+ put_ldev(device);
if (wake_up)
- wake_up(&mdev->al_wait);
+ wake_up(&device->al_wait);
}
/*
@@ -904,7 +904,7 @@ out:
* called by tl_clear and drbd_send_dblock (==drbd_make_request).
* so this can be _any_ process.
*/
-int __drbd_set_out_of_sync(struct drbd_device *mdev, sector_t sector, int size,
+int __drbd_set_out_of_sync(struct drbd_device *device, sector_t sector, int size,
const char *file, const unsigned int line)
{
unsigned long sbnr, ebnr, flags;
@@ -922,10 +922,10 @@ int __drbd_set_out_of_sync(struct drbd_device *mdev, sector_t sector, int size,
return 0;
}
- if (!get_ldev(mdev))
+ if (!get_ldev(device))
return 0; /* no disk, no metadata, no bitmap to set bits in */
- nr_sectors = drbd_get_capacity(mdev->this_bdev);
+ nr_sectors = drbd_get_capacity(device->this_bdev);
esector = sector + (size >> 9) - 1;
if (!expect(sector < nr_sectors))
@@ -940,51 +940,51 @@ int __drbd_set_out_of_sync(struct drbd_device *mdev, sector_t sector, int size,
/* ok, (capacity & 7) != 0 sometimes, but who cares...
* we count rs_{total,left} in bits, not sectors. */
- spin_lock_irqsave(&mdev->al_lock, flags);
- count = drbd_bm_set_bits(mdev, sbnr, ebnr);
+ spin_lock_irqsave(&device->al_lock, flags);
+ count = drbd_bm_set_bits(device, sbnr, ebnr);
enr = BM_SECT_TO_EXT(sector);
- e = lc_find(mdev->resync, enr);
+ e = lc_find(device->resync, enr);
if (e)
lc_entry(e, struct bm_extent, lce)->rs_left += count;
- spin_unlock_irqrestore(&mdev->al_lock, flags);
+ spin_unlock_irqrestore(&device->al_lock, flags);
out:
- put_ldev(mdev);
+ put_ldev(device);
return count;
}
static
-struct bm_extent *_bme_get(struct drbd_device *mdev, unsigned int enr)
+struct bm_extent *_bme_get(struct drbd_device *device, unsigned int enr)
{
struct lc_element *e;
struct bm_extent *bm_ext;
int wakeup = 0;
unsigned long rs_flags;
- spin_lock_irq(&mdev->al_lock);
- if (mdev->resync_locked > mdev->resync->nr_elements/2) {
- spin_unlock_irq(&mdev->al_lock);
+ spin_lock_irq(&device->al_lock);
+ if (device->resync_locked > device->resync->nr_elements/2) {
+ spin_unlock_irq(&device->al_lock);
return NULL;
}
- e = lc_get(mdev->resync, enr);
+ e = lc_get(device->resync, enr);
bm_ext = e ? lc_entry(e, struct bm_extent, lce) : NULL;
if (bm_ext) {
if (bm_ext->lce.lc_number != enr) {
- bm_ext->rs_left = drbd_bm_e_weight(mdev, enr);
+ bm_ext->rs_left = drbd_bm_e_weight(device, enr);
bm_ext->rs_failed = 0;
- lc_committed(mdev->resync);
+ lc_committed(device->resync);
wakeup = 1;
}
if (bm_ext->lce.refcnt == 1)
- mdev->resync_locked++;
+ device->resync_locked++;
set_bit(BME_NO_WRITES, &bm_ext->flags);
}
- rs_flags = mdev->resync->flags;
- spin_unlock_irq(&mdev->al_lock);
+ rs_flags = device->resync->flags;
+ spin_unlock_irq(&device->al_lock);
if (wakeup)
- wake_up(&mdev->al_wait);
+ wake_up(&device->al_wait);
if (!bm_ext) {
if (rs_flags & LC_STARVING)
@@ -996,25 +996,25 @@ struct bm_extent *_bme_get(struct drbd_device *mdev, unsigned int enr)
return bm_ext;
}
-static int _is_in_al(struct drbd_device *mdev, unsigned int enr)
+static int _is_in_al(struct drbd_device *device, unsigned int enr)
{
int rv;
- spin_lock_irq(&mdev->al_lock);
- rv = lc_is_used(mdev->act_log, enr);
- spin_unlock_irq(&mdev->al_lock);
+ spin_lock_irq(&device->al_lock);
+ rv = lc_is_used(device->act_log, enr);
+ spin_unlock_irq(&device->al_lock);
return rv;
}
/**
* drbd_rs_begin_io() - Gets an extent in the resync LRU cache and sets it to BME_LOCKED
- * @mdev: DRBD device.
+ * @device: DRBD device.
* @sector: The sector number.
*
* This functions sleeps on al_wait. Returns 0 on success, -EINTR if interrupted.
*/
-int drbd_rs_begin_io(struct drbd_device *mdev, sector_t sector)
+int drbd_rs_begin_io(struct drbd_device *device, sector_t sector)
{
unsigned int enr = BM_SECT_TO_EXT(sector);
struct bm_extent *bm_ext;
@@ -1023,8 +1023,8 @@ int drbd_rs_begin_io(struct drbd_device *mdev, sector_t sector)
200 times -> 20 seconds. */
retry:
- sig = wait_event_interruptible(mdev->al_wait,
- (bm_ext = _bme_get(mdev, enr)));
+ sig = wait_event_interruptible(device->al_wait,
+ (bm_ext = _bme_get(device, enr)));
if (sig)
return -EINTR;
@@ -1032,18 +1032,18 @@ retry:
return 0;
for (i = 0; i < AL_EXT_PER_BM_SECT; i++) {
- sig = wait_event_interruptible(mdev->al_wait,
- !_is_in_al(mdev, enr * AL_EXT_PER_BM_SECT + i) ||
+ sig = wait_event_interruptible(device->al_wait,
+ !_is_in_al(device, enr * AL_EXT_PER_BM_SECT + i) ||
test_bit(BME_PRIORITY, &bm_ext->flags));
if (sig || (test_bit(BME_PRIORITY, &bm_ext->flags) && sa)) {
- spin_lock_irq(&mdev->al_lock);
- if (lc_put(mdev->resync, &bm_ext->lce) == 0) {
+ spin_lock_irq(&device->al_lock);
+ if (lc_put(device->resync, &bm_ext->lce) == 0) {
bm_ext->flags = 0; /* clears BME_NO_WRITES and eventually BME_PRIORITY */
- mdev->resync_locked--;
- wake_up(&mdev->al_wait);
+ device->resync_locked--;
+ wake_up(&device->al_wait);
}
- spin_unlock_irq(&mdev->al_lock);
+ spin_unlock_irq(&device->al_lock);
if (sig)
return -EINTR;
if (schedule_timeout_interruptible(HZ/10))
@@ -1060,14 +1060,14 @@ retry:
/**
* drbd_try_rs_begin_io() - Gets an extent in the resync LRU cache, does not sleep
- * @mdev: DRBD device.
+ * @device: DRBD device.
* @sector: The sector number.
*
* Gets an extent in the resync LRU cache, sets it to BME_NO_WRITES, then
* tries to set it to BME_LOCKED. Returns 0 upon success, and -EAGAIN
* if there is still application IO going on in this area.
*/
-int drbd_try_rs_begin_io(struct drbd_device *mdev, sector_t sector)
+int drbd_try_rs_begin_io(struct drbd_device *device, sector_t sector)
{
unsigned int enr = BM_SECT_TO_EXT(sector);
const unsigned int al_enr = enr*AL_EXT_PER_BM_SECT;
@@ -1075,8 +1075,8 @@ int drbd_try_rs_begin_io(struct drbd_device *mdev, sector_t sector)
struct bm_extent *bm_ext;
int i;
- spin_lock_irq(&mdev->al_lock);
- if (mdev->resync_wenr != LC_FREE && mdev->resync_wenr != enr) {
+ spin_lock_irq(&device->al_lock);
+ if (device->resync_wenr != LC_FREE && device->resync_wenr != enr) {
/* in case you have very heavy scattered io, it may
* stall the syncer undefined if we give up the ref count
* when we try again and requeue.
@@ -1090,28 +1090,28 @@ int drbd_try_rs_begin_io(struct drbd_device *mdev, sector_t sector)
* the lc_put here...
* we also have to wake_up
*/
- e = lc_find(mdev->resync, mdev->resync_wenr);
+ e = lc_find(device->resync, device->resync_wenr);
bm_ext = e ? lc_entry(e, struct bm_extent, lce) : NULL;
if (bm_ext) {
D_ASSERT(!test_bit(BME_LOCKED, &bm_ext->flags));
D_ASSERT(test_bit(BME_NO_WRITES, &bm_ext->flags));
clear_bit(BME_NO_WRITES, &bm_ext->flags);
- mdev->resync_wenr = LC_FREE;
- if (lc_put(mdev->resync, &bm_ext->lce) == 0)
- mdev->resync_locked--;
- wake_up(&mdev->al_wait);
+ device->resync_wenr = LC_FREE;
+ if (lc_put(device->resync, &bm_ext->lce) == 0)
+ device->resync_locked--;
+ wake_up(&device->al_wait);
} else {
dev_alert(DEV, "LOGIC BUG\n");
}
}
/* TRY. */
- e = lc_try_get(mdev->resync, enr);
+ e = lc_try_get(device->resync, enr);
bm_ext = e ? lc_entry(e, struct bm_extent, lce) : NULL;
if (bm_ext) {
if (test_bit(BME_LOCKED, &bm_ext->flags))
goto proceed;
if (!test_and_set_bit(BME_NO_WRITES, &bm_ext->flags)) {
- mdev->resync_locked++;
+ device->resync_locked++;
} else {
/* we did set the BME_NO_WRITES,
* but then could not set BME_LOCKED,
@@ -1123,13 +1123,13 @@ int drbd_try_rs_begin_io(struct drbd_device *mdev, sector_t sector)
goto check_al;
} else {
/* do we rather want to try later? */
- if (mdev->resync_locked > mdev->resync->nr_elements-3)
+ if (device->resync_locked > device->resync->nr_elements-3)
goto try_again;
/* Do or do not. There is no try. -- Yoda */
- e = lc_get(mdev->resync, enr);
+ e = lc_get(device->resync, enr);
bm_ext = e ? lc_entry(e, struct bm_extent, lce) : NULL;
if (!bm_ext) {
- const unsigned long rs_flags = mdev->resync->flags;
+ const unsigned long rs_flags = device->resync->flags;
if (rs_flags & LC_STARVING)
dev_warn(DEV, "Have to wait for element"
" (resync LRU too small?)\n");
@@ -1137,146 +1137,146 @@ int drbd_try_rs_begin_io(struct drbd_device *mdev, sector_t sector)
goto try_again;
}
if (bm_ext->lce.lc_number != enr) {
- bm_ext->rs_left = drbd_bm_e_weight(mdev, enr);
+ bm_ext->rs_left = drbd_bm_e_weight(device, enr);
bm_ext->rs_failed = 0;
- lc_committed(mdev->resync);
- wake_up(&mdev->al_wait);
+ lc_committed(device->resync);
+ wake_up(&device->al_wait);
D_ASSERT(test_bit(BME_LOCKED, &bm_ext->flags) == 0);
}
set_bit(BME_NO_WRITES, &bm_ext->flags);
D_ASSERT(bm_ext->lce.refcnt == 1);
- mdev->resync_locked++;
+ device->resync_locked++;
goto check_al;
}
check_al:
for (i = 0; i < AL_EXT_PER_BM_SECT; i++) {
- if (lc_is_used(mdev->act_log, al_enr+i))
+ if (lc_is_used(device->act_log, al_enr+i))
goto try_again;
}
set_bit(BME_LOCKED, &bm_ext->flags);
proceed:
- mdev->resync_wenr = LC_FREE;
- spin_unlock_irq(&mdev->al_lock);
+ device->resync_wenr = LC_FREE;
+ spin_unlock_irq(&device->al_lock);
return 0;
try_again:
if (bm_ext)
- mdev->resync_wenr = enr;
- spin_unlock_irq(&mdev->al_lock);
+ device->resync_wenr = enr;
+ spin_unlock_irq(&device->al_lock);
return -EAGAIN;
}
-void drbd_rs_complete_io(struct drbd_device *mdev, sector_t sector)
+void drbd_rs_complete_io(struct drbd_device *device, sector_t sector)
{
unsigned int enr = BM_SECT_TO_EXT(sector);
struct lc_element *e;
struct bm_extent *bm_ext;
unsigned long flags;
- spin_lock_irqsave(&mdev->al_lock, flags);
- e = lc_find(mdev->resync, enr);
+ spin_lock_irqsave(&device->al_lock, flags);
+ e = lc_find(device->resync, enr);
bm_ext = e ? lc_entry(e, struct bm_extent, lce) : NULL;
if (!bm_ext) {
- spin_unlock_irqrestore(&mdev->al_lock, flags);
+ spin_unlock_irqrestore(&device->al_lock, flags);
if (__ratelimit(&drbd_ratelimit_state))
dev_err(DEV, "drbd_rs_complete_io() called, but extent not found\n");
return;
}
if (bm_ext->lce.refcnt == 0) {
- spin_unlock_irqrestore(&mdev->al_lock, flags);
+ spin_unlock_irqrestore(&device->al_lock, flags);
dev_err(DEV, "drbd_rs_complete_io(,%llu [=%u]) called, "
"but refcnt is 0!?\n",
(unsigned long long)sector, enr);
return;
}
- if (lc_put(mdev->resync, &bm_ext->lce) == 0) {
+ if (lc_put(device->resync, &bm_ext->lce) == 0) {
bm_ext->flags = 0; /* clear BME_LOCKED, BME_NO_WRITES and BME_PRIORITY */
- mdev->resync_locked--;
- wake_up(&mdev->al_wait);
+ device->resync_locked--;
+ wake_up(&device->al_wait);
}
- spin_unlock_irqrestore(&mdev->al_lock, flags);
+ spin_unlock_irqrestore(&device->al_lock, flags);
}
/**
* drbd_rs_cancel_all() - Removes all extents from the resync LRU (even BME_LOCKED)
- * @mdev: DRBD device.
+ * @device: DRBD device.
*/
-void drbd_rs_cancel_all(struct drbd_device *mdev)
+void drbd_rs_cancel_all(struct drbd_device *device)
{
- spin_lock_irq(&mdev->al_lock);
+ spin_lock_irq(&device->al_lock);
- if (get_ldev_if_state(mdev, D_FAILED)) { /* Makes sure ->resync is there. */
- lc_reset(mdev->resync);
- put_ldev(mdev);
+ if (get_ldev_if_state(device, D_FAILED)) { /* Makes sure ->resync is there. */
+ lc_reset(device->resync);
+ put_ldev(device);
}
- mdev->resync_locked = 0;
- mdev->resync_wenr = LC_FREE;
- spin_unlock_irq(&mdev->al_lock);
- wake_up(&mdev->al_wait);
+ device->resync_locked = 0;
+ device->resync_wenr = LC_FREE;
+ spin_unlock_irq(&device->al_lock);
+ wake_up(&device->al_wait);
}
/**
* drbd_rs_del_all() - Gracefully remove all extents from the resync LRU
- * @mdev: DRBD device.
+ * @device: DRBD device.
*
* Returns 0 upon success, -EAGAIN if at least one reference count was
* not zero.
*/
-int drbd_rs_del_all(struct drbd_device *mdev)
+int drbd_rs_del_all(struct drbd_device *device)
{
struct lc_element *e;
struct bm_extent *bm_ext;
int i;
- spin_lock_irq(&mdev->al_lock);
+ spin_lock_irq(&device->al_lock);
- if (get_ldev_if_state(mdev, D_FAILED)) {
+ if (get_ldev_if_state(device, D_FAILED)) {
/* ok, ->resync is there. */
- for (i = 0; i < mdev->resync->nr_elements; i++) {
- e = lc_element_by_index(mdev->resync, i);
+ for (i = 0; i < device->resync->nr_elements; i++) {
+ e = lc_element_by_index(device->resync, i);
bm_ext = lc_entry(e, struct bm_extent, lce);
if (bm_ext->lce.lc_number == LC_FREE)
continue;
- if (bm_ext->lce.lc_number == mdev->resync_wenr) {
+ if (bm_ext->lce.lc_number == device->resync_wenr) {
dev_info(DEV, "dropping %u in drbd_rs_del_all, apparently"
" got 'synced' by application io\n",
- mdev->resync_wenr);
+ device->resync_wenr);
D_ASSERT(!test_bit(BME_LOCKED, &bm_ext->flags));
D_ASSERT(test_bit(BME_NO_WRITES, &bm_ext->flags));
clear_bit(BME_NO_WRITES, &bm_ext->flags);
- mdev->resync_wenr = LC_FREE;
- lc_put(mdev->resync, &bm_ext->lce);
+ device->resync_wenr = LC_FREE;
+ lc_put(device->resync, &bm_ext->lce);
}
if (bm_ext->lce.refcnt != 0) {
dev_info(DEV, "Retrying drbd_rs_del_all() later. "
"refcnt=%d\n", bm_ext->lce.refcnt);
- put_ldev(mdev);
- spin_unlock_irq(&mdev->al_lock);
+ put_ldev(device);
+ spin_unlock_irq(&device->al_lock);
return -EAGAIN;
}
D_ASSERT(!test_bit(BME_LOCKED, &bm_ext->flags));
D_ASSERT(!test_bit(BME_NO_WRITES, &bm_ext->flags));
- lc_del(mdev->resync, &bm_ext->lce);
+ lc_del(device->resync, &bm_ext->lce);
}
- D_ASSERT(mdev->resync->used == 0);
- put_ldev(mdev);
+ D_ASSERT(device->resync->used == 0);
+ put_ldev(device);
}
- spin_unlock_irq(&mdev->al_lock);
- wake_up(&mdev->al_wait);
+ spin_unlock_irq(&device->al_lock);
+ wake_up(&device->al_wait);
return 0;
}
/**
* drbd_rs_failed_io() - Record information on a failure to resync the specified blocks
- * @mdev: DRBD device.
+ * @device: DRBD device.
* @sector: The sector number.
* @size: Size of failed IO operation, in byte.
*/
-void drbd_rs_failed_io(struct drbd_device *mdev, sector_t sector, int size)
+void drbd_rs_failed_io(struct drbd_device *device, sector_t sector, int size)
{
/* Is called from worker and receiver context _only_ */
unsigned long sbnr, ebnr, lbnr;
@@ -1289,7 +1289,7 @@ void drbd_rs_failed_io(struct drbd_device *mdev, sector_t sector, int size)
(unsigned long long)sector, size);
return;
}
- nr_sectors = drbd_get_capacity(mdev->this_bdev);
+ nr_sectors = drbd_get_capacity(device->this_bdev);
esector = sector + (size >> 9) - 1;
if (!expect(sector < nr_sectors))
@@ -1317,21 +1317,21 @@ void drbd_rs_failed_io(struct drbd_device *mdev, sector_t sector, int size)
* ok, (capacity & 7) != 0 sometimes, but who cares...
* we count rs_{total,left} in bits, not sectors.
*/
- spin_lock_irq(&mdev->al_lock);
- count = drbd_bm_count_bits(mdev, sbnr, ebnr);
+ spin_lock_irq(&device->al_lock);
+ count = drbd_bm_count_bits(device, sbnr, ebnr);
if (count) {
- mdev->rs_failed += count;
+ device->rs_failed += count;
- if (get_ldev(mdev)) {
- drbd_try_clear_on_disk_bm(mdev, sector, count, false);
- put_ldev(mdev);
+ if (get_ldev(device)) {
+ drbd_try_clear_on_disk_bm(device, sector, count, false);
+ put_ldev(device);
}
/* just wake_up unconditional now, various lc_chaged(),
* lc_put() in drbd_try_clear_on_disk_bm(). */
wake_up = 1;
}
- spin_unlock_irq(&mdev->al_lock);
+ spin_unlock_irq(&device->al_lock);
if (wake_up)
- wake_up(&mdev->al_wait);
+ wake_up(&device->al_wait);
}