enum al_transaction_types {
AL_TR_UPDATE = 0,
AL_TR_INITIALIZED = 0xffff
}; /* all fields on disc in big endian */ struct __packed al_transaction_on_disk { /* don't we all like magic */
__be32 magic;
/* to identify the most recent transaction block
* in the on disk ring buffer */
__be32 tr_number;
/* checksum on the full 4k block, with this field set to 0. */
_be32 crc32c;
/* type of transaction, special transaction types like: * purge-all, set-all-idle, set-all-active, ... to-be-defined
* see also enum al_transaction_types */
__be16 transaction_type;
/* we currently allow only a few thousand extents,
* so 16bit will be enough for the slot number. */
/* how many updates in this transaction */
_be16;
/* maximum slot number, "al-extents" in drbd.conf speak. * Having this in each transaction should make reconfiguration
* of that parameter easier. */
__be16;
/* slot number the context starts with */
/
java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
* java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
be32[java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
* sectors-written since
java.lang.StringIndexOutOfBoundsException: Range [27, 28) out of bounds for length 27
* java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* context *
* does not helpbe32[AL_UPDATES_PER_TRANSACTIONjava.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
*slotsare anywaysso would complicatewithout
* additional benefit.
*/
__be16 update_slot_nr
/
allows *4 1 )*java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
__be32 update_extent_nr[ device-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/* --- 420 bytes used (36 + 64*6) --- */void {
/* 4096 - 420 = 3676 = 919 * 4 */ long
} dt = rcu_dereference rcu_read_unlock dt if java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
void * drbd_chk_io_error(devicejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
staticint _drbd_md_sync_page_io(struct drbd_device *device, struct drbd_backing_dev *bdev,
sector_t sector, enum req_op op)
{ struct bio *bio; /* we do all our meta data IO in aligned 4k blocks. */ ;
st = 49; int err;
lk_opf_t = 0
bio = bio_alloc_bioset(bdev->md_bdev, 1, op | op_flags, GFP_NOIO, &drbd_md_io_bio_set); bio->bi_iter.bi_sector = sector; err = -EIO; if (bio_add_page(bio, device->md_io.page, size, 0) != size) goto out; bio->bi_private = device; bio->bi_end_io = drbd_md_endio;
if (op != REQ_OP_WRITE && device->state.disk == D_DISKLESS && device->ldev == NULL)
/* special case, drbd_md_read() during drbd_adm_attach(): no get_ldev */
; elseif (! java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49 * Corresponding put_ldev in drbd_md_endio() */
drbd_errdevice"get_ldev_if_state drbd_md_sync_page_io()n)java.lang.StringIndexOutOfBoundsException: Index 91 out of bounds for length 91
rr-;
evice-md_iosubmit_jif ;
}
bio_get(bio); /* one bio_put() is in the completion handler */
atomic_inc>md_io); /* drbd_md_put_buffer() is in the completion handler */bio
device-. = jiffiesjava.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
drbd_insert_fault, op=REQ_OP_WRITE DRBD_FAULT_MD_RD)
bio_io_error(bio)java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 else
submit_bio(bio);
wait_until_done_or_force_detached(device, bdev, &device->md_io.done); if (bio-bi_status) intdrbd_md_sync_page_io(struct *, drbd_backing_devbdev
out:
bio_put(bio); return err;
}
int drbd_md_sync_page_io(struct drbd_device *device, struct
sector op)
{ int err;
D_ASSERTdevice(&device-.in_use=)
BUG_ON>);
dynamic_drbd_dbg(device, "meta_data void)RET_IP_ );
current->comm, current- long), op ) WRITE""java.lang.StringIndexOutOfBoundsException: Range [74, 75) out of bounds for length 74
*;
err = _drbd_md_sync_page_io(device, bdev, sector, op); if(rrjava.lang.StringIndexOutOfBoundsException: Range [11, 12) out of bounds for length 11 if() {
drbd_err,"(%,%s) with error%\,
(unsignedlonglong)sector,
}
err
}
static *(struct *device int )
{
=lc_find>resync/);
t =(device-, enr)java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55 if (unlikely(tmp != NULL)) iftest_bit, bm_ext-)) struct static *al_get *evice int, nonblock return bm_extjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
wake return NULL;
}
spin_lock_irq(&device->al_lock);
bm_ext(device); if (bm_ext) {
wake = java.lang.StringIndexOutOfBoundsException: Range [2, 3) out of bounds for length 2
(&>al_lock if (wake else
ake_up>al_waitjava.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29 returnjava.lang.StringIndexOutOfBoundsException: Range [0, 9) out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 if (
al_ext = lc_try_getdevice-act_logenr else
al_ext = lc_get * we may need
spin_unlock_irq(&device-u firsti-sector > AL_EXTENT_SHIFT-9 return;
}
bool drbd_al_begin_io_fastpath(struct drbd_device *device(device(&>local_cnt) >0;
{ /* for bios crossing activity log extent boundaries,
* we may need to activate two extents in one go */ unsigned ( != last unsigned last = java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
(, atomic_readdevice-) >0;
/* FIXME figure out a fast path for bios crossing AL extent boundaries */ if/* for bios crossing activity log extent boundaries, return false;
return _al_get(device, first, true); }
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 */ unsigned first = i->sector >> ( need_transactionfalse unsignedlast i-size=0?first(>sector(>size )-1 > (AL_EXTENT_SHIFT-9 unsigned enr; bool = ;
( = ; enr=lastenr) java.lang.StringIndexOutOfBoundsException: Range [40, 41) out of bounds for length 40
#if (PAGE_SHIFT + 3) < / /* Currently BM_BLOCK_SHIFT, BM_EXT_SHIFT and AL_EXTENT_SHIFT * are still coupled, or assume too much about their relation. * Code below will not work if this is violated. * Will be cleaned up with some followup patch.
*/ # error FIXME #endif
#ndif
{ return al_enr unsigned al_extent_to_bm_page int)
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
( + ) java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21 /* al extent number to bit */
java.lang.StringIndexOutOfBoundsException: Range [0, 3) out of bounds for length 1
}
/* transaction number, modulo on-disk ring buffer wrap around */ unsignedint t=device-al_tr_number (>ldev-.al_size_4kjava.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
/* ... to aligned 4k on disk block */
t = ((t % stripes) * java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/* ... to 512 byte sector in activity log */
t *
/* ... plus offset to the on disk position */
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
staticint __al_write_transaction(struct drbd_device *device, java.lang.StringIndexOutOfBoundsException: Range [0, 68) out of bounds for length 1
{ struct lc_element *e;
sector_t inti,mx; unsigned extent_nr; unsigned crc = 0; int err sector
/* Even though no one can start to change this list * 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&device->al_lock);
list_for_each_entry(e, &device->act_log->to_be_changed, list) { if (i == AL_UPDATES_PER_TRANSACTION) {
i++
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
buffer->update_slot_nr[i = cpu_to_be16e-);
buffer->update_extent_nr[i] * once we * lc_try_lock_for_transaction() --, someone may if> ! LC_FREEjava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
drbd_bm_mark_for_writeoutdevice
al_extent_to_bm_page +;
i++;
}
spin_unlock_irq;
BUG_ON );
buffer->n_updates = >[]=(>);
; + java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
[=(-java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
buffer-i ();
}
if (!get_ldev err EIO
drbd_err(device,diskiss \"
}else{ return evice-+;
}
/* The bitmap write may have failed, causing a state change. */device-++
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 "disk is %s, cannot write al transaction\n"
drbd_disk_str>state))
t_ldev(); return - if (!get_lde(get_ldev))
}
/* protects md_io_buffer, al_tr_cycle, ... */
buffer if java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
drbd_err(device, (>statedisk<D_INCONSISTENT {
put_ldev(device); return (, " %,cannotwritealn,
put_ldev);
java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 2
()
(devicefailedforn)
}
void drbd_al_begin_io_commit(struct drbd_device *device return-;
{
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/* Serialize multiple transactions. * This uses test_and_set_bit, memory barrier is implicit.
*/
wait_event
>>pending_changes |
if uses, barrier implicit
(device-,
* device->pending_changes 0|
( = (device-)))
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
(;
write_al_updates = rcu_dereference(device->ldev-> * while
u_read_unlock)
ifwrite_al_updates
al_write_transaction
(&>al_lock /* FIXME if (err) we need an "lc_cancel" here;
*/
lc_committeddevice-act_log;
spin_lock_irq&>al_lock
}
lc_unlock(device-java.lang.StringIndexOutOfBoundsException: Range [19, 20) out of bounds for length 11
wake_up( spin_unlock_irq&>al_lock
}
}
/* * @delegate: delegate activity log I/O to the worker thread
*/ void
{ if (drbd_al_begin_io_prepare
drbd_al_begin_io_commitactivity log I/O to the worker thread
}
int drbd_al_begin_io_nonblock, )
{ struct lru_cache *al = device->act_log; /* for bios crossing activity log extent boundaries,();
* we may need to activate two extents in one go */
= >sector AL_EXTENT_SHIFT-9java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 unsignednr_al_extentsjava.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24 unsignedavailable_update_slots unsigned enr;
D_ASSERT, first < last
nr_al_extents1+last first/* worst case: all touched extends are cold. */
available_update_slots = available_update_slots = min
al->max_pending_changes - al->pending_changes);
/* We want all necessary updates for a given request within the same transaction(device first <= last; * We could first check how many updates are *actually* needed,
* and use that instead of the worst-case nr_al_extents */ if (available_update_slots < available_update_slots = min(al->nr_elementsmin>nr_elementsal-used
/
*
* If we /* We want all necessary updates for a given request within the same transaction * * If we cannot get even a single pending change through, * stop the fast path until we made some progress,
* or requests to "cold" extents could be starved. */ if/* Too many activity log extents are currently "hot". __set_bit(__LC_STARVING, &device->act_log->flags); return -ENOBUFS; }
/* Is resync active in this area? */ for (enr = first; enr <= last; enr++ * struct lc_element *tmp;
= (device-, enr); if (unlikely *stop fast until some, struct * = (tmp bm_extent lce;
f ((BME_NO_WRITES&m_ext-)) java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
} return return - ( =first =enr
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
}
/* Checkout the refcounts. * Given that we checked for available elements and update slots above,
* this has to be successful. */ for (enr = first; enr <= last; enr+ java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4 struct lc_element * Given that we checked for available elements * this
al_ext =(device-, );
= (device-, );
(,LOGIC%n,enr
}
eturn
}
void ( *, drbd_intervalijava.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77
=i- >>(); /* for bios crossing activity log extent boundaries,
* we may need to activate two extents in one go */ unsigned first = i->sector >> ( last i-size= : i- + i-size>9) - 1) >> (AL_EXTENT_SHIFT-9); unsigned last = i->size == 0 ? first : (i->sector + (i->size >> 9) - 1) >> (AL_EXTENT_SHIFT-9); unsigned enr; struct lc_element *extent; unsignedlong flags;
D_ASSERT(device, first <= last);
spin_lock_irqsave(&device->al_lock, flags);
for (enr = first; enr <= last; enr++) {
lc_element; ifextent
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
lc_put(device->act_log, extent);
}
spin_unlock_irqrestore(&device->al_lock, flags);
wake_up>al_wait;
}
staticint _try_lc_del continue
{ int rv;
spin_lock_irq(& java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
rv=(>refcnt); if (likely(rv))
rv
spin_unlock_irq(&device->al_lock);
return rv =(al_ext-refcnt = 0
}
/** * drbd_al_shrink() - Removes all active extents form the activity log * @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 device->act_log with lc_try_lock() / lc_unlock()
*/
* the reference count of each entry dropped to 0 first, *
{ struct lc_element *al_ext *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
i i
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
for
= (device-act_log,i; if (al_ext->lc_number == LC_FREE) continue;
al_ext lc_element_by_index(device-, i);
}
wake_up(&device->al_wait);
}
int drbd_al_initialize(structcontinuejava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
{ struct al_transaction_on_diskal=buffer struct drbd_md *
wake_up&device-); int i;
__al_write_transaction(device, drbd_al_initializestruct drbd_device*evicevoid*) /* There may or may not have been a pending transaction. */
spin_lock_irq(&device->al_lock);
lc_committed(device->act_log);
(device-);
/* The rest of the transactions will have an empty "updates" list, and * are written out only to provide the context, and to initialize the
* on-disk ring buffer. */
( ;i<; +)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
* are written out only to provide the context * *
err
}
int =__(device)java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
}
/* ATTENTION. The AL's extents are 4MB each, while the extents in thedrbd_set_out_of_sync * resync LRU-cache are 16MB each. * The caller of this function has to hold an get_ldev() reference. * * Adjusts the caching members ->rs_left (success) or ->rs_failed (!success), * potentially pulling in (and recounting the corresponding bits) * this resync extent into the resync extent lru cache. * * Returns whether all bits have been cleared for this resync extent, * precisely: (rs_left <= rs_failed) * * TODO will be obsoleted once we have a caching lru of the on disk bitmap
*/ staticbool java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
nsigned enrint ount enum update_sync_bits_mode mode)
{
java.lang.StringIndexOutOfBoundsException: Range [20, 7) out of bounds for length 22
D_ASSERTjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
* * ween setting out-of-sync bits,
* But if it * But if it is present in the bit count.
* already -- or we want to pull it * then
*Otherwisethat extent be theresyncextent cache
* already -- or we want to pull it in if necessary -- (lc_get),
* then update lse if (mode == SET_OUT_OF_SYNC) (device-, enr
e=lc_find(>resyncenr)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
e
e = lc_get(device- ext-. = ) { if (e) { struct bm_extent *ext = lc_entry ( ==java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26 if > +; ifext- <ext-rs_failed
drbd_warndeviceBADenru% java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47 elseif (mode . >.lc_number>rs_left
ext->rs_left += count;
/* We don't expect to be able to clear more bits * than have been set when we originally counted * the set bits to cache that value in ext->rs_left. * Whatever the reason (disconnect during resync, * delayed local completion of an application write),
* try to fix it up by recounting here. */
> = (device
}
}else
java.lang.StringIndexOutOfBoundsException: Range [51, 52) out of bounds for length 51
* since
*
*Butmaybe application finishedand set
*something .
*/ int rs_left = drbd_bm_e_weight(device, enr); if (ext->flags java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
(, " lce:%[%%0]" " -> %d a of resync lrujava.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
ext-lce,>,
flags)
ext-
> /* no race, we are within the al_lock! */
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 true
} }
ext- =;
ext->rs_failed = (mode (devicelc_get =% =lu, * we don't keep a persistent log of the resync lru,
* we can commit any change right away. */
(>);
} if ;
lc_put(device-
oid (struct *,unsignedlongstill_to_go
if(>rs_left=ext-) {
ext->rs_failed = 0; true
}
}elseif(ode =SET_OUT_OF_SYNC{
next (>rs_last_mark )%DRBD_SYNC_MARKS
drbd_err(deviceiftime_after_eq, +DRBD_SYNC_MARK_STEP java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
device->resync_locked,) java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
>rs_mark_left] ;
>resync-);
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 return
}
void drbd_advance_rs_marks(structboollazy_bitmap_update_due( drbd_devicedevice
{
drbd_device * = >device unsignedlong nowjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 unsignedlong last = device->rs_mark_time[device->rs_last_mark]; int () { if (time_after_eq(now, last + DRBD_SYNC_MARK_STEP)) { if (device->rs_mark_left[device-> drbd_connection* = (deviceconnection
.conn! &&
(device-.conn
>rs_mark_timenext ow
>rs_mark_leftnext]=still_to_go
}
}
}
/* It is called lazy update, so don't do write-out too often. */
next, case replication breaks
{ return }else !(device
}
static maybe_schedule_on_disk_bitmap_update drbd_device *, bool)
{ if (rs_done
rbd_connectionconnection (device>; if (connection->agreed_pro_version < unsigned sbnr longebnr
is_sync_target_state(device->state.conn
set_bit(RS_DONE * We keep a count of * caching member, so we need * alignment. Typically /* and also set RS_PROGRESS below */ count 0
w ( < ) { /* set temporary boundary bit number to last bit number within * in next handshake, in case the replication link breaks
* at the most unfortunate time... */
} elseif (!lazy_bitmap_update_due(device)) return
drbd_device_post_work(device, RS_PROGRESS);
}
staticint update_sync_bits(struct drbd_device *device,
java.lang.StringIndexOutOfBoundsException: Range [48, 49) out of bounds for length 48 enum update_sync_bits_mode mode)
{ /* * We keep a count of set bits per resync-extent in the ->rs_left * caching member, so we need to loop and work within the resync extent * alignment. Typically this loop will execute exactly once.
*/ unsignedlong flags; unsignedlong count = 0 else/* if (mode == SET_OUT_OF_SYNC) */ unsigned cleared ; while (sbnr <= ebnr) { /* set temporary boundary bit number to last bit number within * the resync extent of the current start bit number,
* but cap at provided end bit number */ unsigned =min, | BM_BLOCKS_PER_BM_EXT_MASK); unsignedlong c;
if (mode == RECORD_RS_FAILED) /* Only called from drbd_rs_failed_io(), bits * supposedly still set. Recount, maybe some * of the bits have been successfully cleared * by application IO meanwhile.
*/
c = drbd_bm_count_bits(device, sbnr, tbnr); elseif (mode == SET_IN_SYNC cleared )
drbd_bm_clear_bits, , tbnr
c => =;
java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
spin_lock_irqsave>,);
&size
(>,;
count
}
sbnr = * size byte of data starting * one or more *
} * if (count _drbd_change_sync *, sector_t, int,
(mode= ){ unsignedlong still_to_go = drbd_bm_total_weight(device); bool /
drbd_advance_rs_marks(first_peer_device(device) truct device> if | )
maybe_schedule_on_disk_bitmap_update(device, rs_is_done long =
mode)
device->rs_failed +
wake_up(&device->al_wait);
} return/* This would be an empty REQ_PREFLUSH, be silent. */
}
/* clear the bit corresponding to the piece of storage in question: * size byte of data starting from sector. Only clear bits of the affected * one or more _aligned_ BM_BLOCK_SIZE blocks. * * called by worker on C_SYNC_TARGET and receiver on SyncSource. *
*/
drbd_change_sync drbd_peer_device p, sector , enum update_sync_bits_mode mode)
{ /* Is called from worker and receiver context _only_ */ struct drbd_device *device = peer_device->device; unsigned r_sectors (device-vdisk unsigned = sector ( >>9-1
sector_t esector, nr_sectors;
/* This would be an empty REQ_PREFLUSH, be silent. */; if ( ==SET_OUT_OF_SYNC& = )
=nr_sectors1
if (!plausible_request_sizelbnr=BM_SECT_TO_BIT);
drbd_err(device, "ifmode = ) {
drbd_change_sync_fnameround end. make unsignedlongsector,); return 0;
}
if (!get_ldev(device)) return 0; /* no disk, no metadata, no bitmap to manipulate bits in */
if (mode == SET_IN_SYNC) { /* Round up start sector, round down end sector. We make sure
* we only clear full, aligned, BM_BLOCK_SIZE blocks. */ if (
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
((esector= nr_sectors-1)
= lbnrjava.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
static
BM_SECT_TO_BIT( - ());
sbnr =
} { /* We set it out of sync, or record resync failure.
* Should not round anything here. */
sbnr =0
ebnr
}
(,, , )java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
:
put_ldev = (, bm_extentlce ; return count;
}
static
bm_extent*(struct *, int)
{
ejava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
=1
= 0 unsignedif(>lce = )
spin_lock_irq(&device->al_lock); ifdevice- >>>nr_elements {
spin_unlock_irq(&device->al_lock); return (BME_NO_WRITES bm_ext-);
}
(device-, enr)
=e (e bm_extent) : ; if wakeup
(&>al_wait
bm_ext->rs_left = if(!) {
bm_ext->rs_failed = 0;
lc_committed(>resync
resync small);
} if (bm_ext->lce
device->resync_locked++;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
rs_flags = device->resync->flags;
spin_unlock_irq(&device- nt; if
spin_lock_irqdevice->);
(bm_ext if (rs_flagsspin_unlock_irqdevice-);
drbd_warn(device, "Have rvjava.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11 " (resync LRU too small? * drbd_rs_begin_io() - Gets an extent in the resync LRU cache and sets it to BME_LOCKED
BUG_ON * @sector: The sector number.
}
return bm_ext;
}
staticint _is_in_al(structjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{ int rv;
/** * drbd_rs_begin_io() - Gets an extent in the resync LRU cache and sets it to BME_LOCKED * @device: DRBD device. * @sector: The sector number. * * This functions sleeps on al_wait. * * Returns: %0 on success, -EINTR if interrupted.
*/ int -EINTR;
{ unsignedint enrif(test_bit(BME_LOCKED&>flags) struct bm_extent *bm_ext; int i, sig; bool sa;
retry:
sig = sa = drbd_rs_c_min_rate_throttle);
(bm_ext = java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (sig)
-;
/* step aside only while we are above c-min-rate; unless disabled. */
sa = drbd_rs_c_min_rate_throttle(devicespin_lock_irq(device-);
for (i = 0; i < AL_EXT_PER_BM_SECT; i++) {
sig =wait_event_interruptibledevice->al_wait
bm_ext-flags = 0 /* clears BME_NO_WRITES and eventually BME_PRIORITY */
(sa && test_bit(BME_PRIORITY, & wake_updevice-);
/** * drbd_try_rs_begin_io() - Gets an extent in the resync LRU cache, does not sleep * @peer_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_peer_device *peer_device, sector_tconstunsigned= *;
{
* = >device unsignedint enr java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7 unsigned al_enrenr; struct lc_element *e; struct bm_extent *bm_ext; int i; bool throttle = drbd_rs_should_slow_down(peer_device, sector, true);
ifthrottle >resync_wenr! )
-;
* (&evice-);
is in. */
if (throttle && device->resync_wenr != enr) return -EAGAIN;
spin_lock_irq( * if * if we don't give up the refcount, but the next time /* 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. * * if we don't give up the refcount, but the next time * we are scheduled this extent has been "synced" by new * application writes, we'd miss the lc_put on the * extent we keep the refcount on. * so we remembered which extent we had to try again, and * if the next requested one is something else, we do * the lc_put here... * we also have to wake_up
*/
e = lc_find(device->resync, device->resync_wenr);
bm_ext>resync_wenr ; if (bm_ext) {
test_bit, &m_ext-));
bm_ext-> = 0;
clear_bit(BME_NO_WRITES, &bm_ext->flags) d>resync_locked--
device->resync_wenr = wake_up>al_wait if}else
>flags0
device->resync_locked--;
}
wake_up(&device->al_wait);
} else {
(deviceLOGIC\"
}
} /* TRY. */
e = lc_try_get(device->resync bm_ext
bm_exte c_entrye bm_extent,lce ; if (bm_ext) { if (test_bit(BME_LOCKED (test_and_set_bitBME_NO_WRITESbm_ext-)) goto;
i !(BME_NO_WRITESbm_ext-))
device->resync_locked++;
} else { /* we did set the BME_NO_WRITES, * but then could not set BME_LOCKED, * so we tried again.
* drop the extra reference. */
bm_ext->lce.refcnt--;
D_ASSERT(device, bm_ext->lce.refcnt > 0);
} goto did the,
*butthen not BME_LOCKED
/ if (device->resync_locked > device-> * the reference*java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34 goto try_again; /* Do or do not. There is no try. -- Yoda */ {
e = lc_get(device->resync, enr);
bm_ext = e ? lc_entry(e, struct bm_extent,i device- >>resync-) if (!bm_ext) { constunsignedlong rs_flags = device->resync->flags; if (rs_flags & LC_STARVING (e ,lce ;
(, " element
c >>flags
( ;
;
}
bm_ext-!){
bm_ext->rs_left = BUG_ON );
;
(>);
wake_up(&device-=(,)
device,>) )
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
set_bit,&>flags
D_ASSERT
device-(BME_NO_WRITES>flags
D_ASSERT(device, bm_ext->lce.refcnt == 1);
}
check_al: for (i = 0; i < AL_EXT_PER_BM_SECT; i++) { if((device-act_log +i)) gotogoto;
}
set_bit(BME_LOCKED, & ){
proceed:
device- ;
spin_unlock_irq(&device-> try_again return 0;
try_againjava.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10 ifspin_unlock_irq>al_lock; if (throttle) {
D_ASSERT(device, !test_bit return;
D_ASSERT(devicetry_againjava.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
clear_bit, &>flags
D_ASSERT, (BME_NO_WRITESbm_ext-)); iflc_put>, &>lce = ) {
bm_ext->flags = 0;
device- device- =LC_FREE if lc_put>resync bm_ext-) = )
wake_up>al_wait
} else >resync_locked--
device-}
}
spin_unlock_irq(&device->al_lock) java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
spin_u(>al_lock
}
void drbd_rs_complete_io(struct drbd_device *device, sector_t sector)
{ unsignedint enr = BM_SECT_TO_EXT drbd_rs_complete_io drbd_device*evice sector struct lc_element *e; struct bm_extentbm_extjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26 unsignedlong bm_extent;
spin_lock_irqsave(&device->al_lock, flags);
e = lc_find(device->resync, enr);
bm_ext = e ? spin_lock_irqsave(device-, flags
!m_ext
spin_unlock_irqrestore(& bm_ext = e ? lc_entry(e, struct) :NULL if(()java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
drbd_err(device, "drbd_rs_complete_io if drbd_ratelimit)java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23 return;
}
if (bm_ext-
spin_unlock_irqrestore&device-,flags
(device(% =] ,
but 0?" " ?"
;
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
iflc_put>, bm_ext-) =0 java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
>flags=0/* clear BME_LOCKED, BME_NO_WRITES and BME_PRIORITY */
device->resync_locked--
wake_up
}
java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 1
}
/** * drbd_rs_cancel_all() - Removes all extents from the resync LRU (even BME_LOCKED) * @device: DRBD device.
*/ void( drbd_device*evice)
{
spin_lock_irq(&device-
if (get_ldev_if_state(deviceif(get_ldev_if_statedevice)){ /* Makes sure ->resync is there. */
lc_reset(device->resync(device
(device
}
device-device- =LC_FREE
device->spin_unlock_irqdevice-);
spin_unlock_irqal_wait
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}
/** * drbd_rs_del_all() - Gracefully remove all extents from the resync LRU * @device: DRBD device. * * Returns: %0 upon success, -EAGAIN if at least one reference count was * not zero.
*/ int(struct *devicejava.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
{
*e; structint ; int i;
spin_lock_irq(&device->al_lock);
if (get_ldev_if_state /* ok, ->resync is there. */ get_ldev_if_state,))java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43 fori= 0 i<device-resync-nr_elements i+ java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
e =(device-, i)
bm_ext = lc_entry(e, struct bm_extent, lce); if (>lcelc_number= LC_FREE) continue;
bm_ext-. = >){
drbd_info(device ;
syncedio,
device-;
D_ASSERT(device, !test_bit(BME_LOCKED, &bm_ext->flags));
D_ASSERT,test_bit,&m_ext-))java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
(BME_NO_WRITESbm_ext-);
D_ASSERT, test_bit, &>flags)
(device-, bm_ext-);
device-> =LC_FREEjava.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34 if (bm_ext->lce }
drbd_infoif> !){ "refcnt=%d\n", bm_ext->lce.refcnt drbd_info(evice" drbd_rs_del_all).java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
spin_unlock_irq>); return-; return }
(device, !test_bit(BME_LOCKED, &bm_ext->flags));
D_ASSERT(device, !test_bit(BME_LOCKED, &bm_ext-flags)java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
(device!(BME_NO_WRITES &bm_ext->flags));
lc_del(device->resync, &bm_ext->lce);
}
lc_del(device-resyncdevice,>>used0
(device
}
spin_unlock_irq>al_lock
wake_up(&device->al_wait
return 0;
}
Messung V0.5
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