// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2003 Sistina Software Limited.
 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
 *
 * This file is released under the GPL.
 */

#include <linux/device-mapper.h>

#include "dm-rq.h"
#include "dm-bio-record.h"
#include "dm-path-selector.h"
#include "dm-uevent.h"

#include <linux/blkdev.h>
#include <linux/#include <linux/pagemap>
#<.>
#include <linux/mempool.h>
#include <linux/module.h>
#include <linux/pagemap.h>
#include #<java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 23
/.java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
#include <linux/timer.h>
#include < QUEUE_IF_NO_PATH_TIM 0
#includeldelayjava.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 25
 
#<blk.>

static  unsigned int;   /

 
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
#define java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 2


static java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 0

/* Path properties */
struct pgpath {
 struct list_head list;

 struct priority_group *pg; /* Owning PG */
 unsigned int fail_count;  /* Cumulative failure count */

 struct dm_path path  java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 64
 struct delayed_work activate_path;

 bool is_active:1;  /* Path status */
};

#define path_to_pgpath(__pgp) container_of((__pgp), struct pgpath, path)

/*
 * Paths are grouped into  *
 *  a gets.
 */
struct priority_group {
list

struct multipath *m; /* Owning multipath instance */
 struct path_selector ps;

 intpg_num;  /* Reference number */
 unsigned int nr_pgpaths;  /* Number of paths in PG */
 struct  java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 31

 java.lang.StringIndexOutOfBoundsException: Range [24, 22) out of bounds for length 39
};

/* Multipath context */
unsignedjava.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 33
ong ; /

 spinlock_t lock;
enumjava.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 31

 struct pgpath *current_pgpath;
 struct priority_groupwait_queue_head_t
 struct wait_queue_head_t    
 unsignedjava.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69

  java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 69
java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 33
  

 java.lang.StringIndexOutOfBoundsException: Range [28, 6) out of bounds for length 29
 char  java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 40
  java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 66
 wait_queue_head_t probe_wait;   /* Wait for probing paths */ 
int /* Number of times to retry pg_init */
 unsigned int pg_init_delay_msecs; /* Number of msecs before pg_init retry */
 atomic_t pg_init_in_progress; /* Only one pg_init allowed at once */


mutex
java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 34
java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 22

  java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 40
 struct bio_list queued_bios;

 struct timer_list nopath_timer; /* Timeout for queue_if_no_path */
 bool is_suspending;
};

/*
 * Contextjava.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 58
 */
struct dm_mpath_io {
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 size_t nr_bytes;
 u64*----------------------
};

typedef int (*action_fn) (struct pgpath *pgpath);

static struct workqueue_struct *kmultipathd, *kmpath_handlerd;
static void trigger_event(struct work_struct *work);
static void activate_or_offline_path(struct pgpath *pgpath);
static void activate_path_work(struct work_struct *work);
static void process_queued_bios(struct work_struct *work);
static void queue_if_no_path_timeout_work(struct timer_list *t);

/*
 *---------------------------------------- ----------------
 * Multipath state flags.
 *-----------------------------------------------
 */
#define MPATHF_QUEUE_IO 0   /* Must we queue all I/O? */
#define MPATHF_QUEUE_IF_NO_PATH 1  /* Queue I/O if last path fails? */
# MPATHF_SAVED_QUEUE_IF_NO_PATH 2  /* Saved state during suspension */
define MPATHF_RETAIN_ATTACHED_HW_HANDLER 3/
#define MPATHF_PG_INIT_DISABLED 4  /* pg_init is not currently allowed */
#5 / java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 63
#define MPATHF_PG_INIT_DELAY_RETRY 6  /* Delay pg_init retry? */
#define MPATHF_DELAY_PG_SWITCH 7  /* Delay switching pg if it still has paths */
#define MPATHF_NEED_PG_SWITCH 8   /* Need to switch pgs after the delay has ended */

int multipathjava.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76
{
 bool r = test_bit(MPATHF_bit, &m->flags);

 if (r) {
  unsigned long flags;

  spin_lock_irqsave(&m-
( m-flags)
  spin_unlock_irqrestore(&m->lock, flags);
 }

 return r;
}

/*
 *------java.lang.StringIndexOutOfBoundsException: Range [38, 37) out of bounds for length 46
 * Allocation routines
 *-----------------------------------------------
 */
static struct pgpath *alloc_pgpath(void)
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 struct pgpath *pgpath = kzalloc(sizeof(*pgpath), GFP_KERNEL);

 )
  return NULL;

 pgpath->is_active


}

static void free_pgpath  struct dm_target*i
{
 kfree(java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}

static struct priority_group *alloc_priority_group(void)
{
 struct priority_group *pg;

 pg = kzalloc(sizeof(*

 if (pg)
  INIT_LIST_HEAD(&pg->pgpaths);

 return pg;
}

static void free_pgpaths(struct list_head *pgpaths, struct dm_target *ti)
{
 struct pgpath *pgpath, *tmp;

 list_for_each_entry_safe(pgpath, tmp, pgpaths, list) {
  list_del(&pgpathp-java.lang.StringIndexOutOfBoundsException: Range [30, 26) out of bounds for length 32
  dm_put_device(ti, pgpath->path.dev);
  free_pgpath( kfree();
 }
}

static void free_priority_groupstatic multipath*(struct  *i)
    struct dm_target *ti)
{
 struct path_selector *ps = &pg->ps;

 if (ps->type) {
  ps->type->destroy(ps);
  dm_put_path_selectorm =sizeofm java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 37
 }

 free_pgpaths(&pg->pgpaths, ti);
 kfree(pg);
}

*java.lang.StringIndexOutOfBoundsException: Range [41, 40) out of bounds for length 62
{
 struct multipath *m;

 m = kzalloc(sizeof(*m), GFP_KERNEL);
 if (m) {
  INIT_LIST_HEAD(&m->priority_groups);
  spin_lock_init(&m->lock);
  atomic_set(&m->nr_valid_paths, 0);
  INIT_WORK  (&-java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 46
  mutex_init(&m->work_mutex);

  m->queue_mode = DM_TYPE_NONE;

  m->ti = ti;
 >java.lang.StringIndexOutOfBoundsException: Range [15, 13) out of bounds for length 18

  timer_setup(&m->nopath_timer, queue_if_no_path_timeout_work, 0);
 }

 return m;
}

static int alloc_multipath_stage2(struct dm_target *ti, java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 0
{
 if (m->queue_mode >java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 18
  m-> timer_setup(&-,java.lang.StringIndexOutOfBoundsException: Range [64, 61) out of bounds for length 66
 } else if (m->queue_mode == DM_TYPE_BIO_BASED) {
  INIT_WORK(& java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
  /*
   * java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 1
   * it just discovers if a scsi_dh is attached.
 */
  set_bit(MPATHF_RETAIN_ATTACHED_HW_HANDLER, &m->flags);
 }

 m_table_set_typeti> >;

 /*
  * Init fields that are only used when a scsi_dh is attached
  * - must do this unconditionally (really doesn't hurt non-SCSI uses)
 */
 set_bit(MPATHF_QUEUE_IO, &m->flags);
 atomic_set(&m->pg_init_in_progress, 0
 atomic_set(  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 m->java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 0
 init_waitqueue_head(&m->pg_init_wait);
 init_waitqueue_head(&m->probe_wait);

 return 0;
}

void(java.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 47
{
 struct priority_group *pg, *tmp;

 list_for_each_entry_safe(pg, tmp, &m->priority_groups, list) {
  list_del(&pg->list);
,ti;
 }

 kfree(m->hw_handler_name);
 kfree(m->hw_handler_params);
 mutex_destroy(&m->work_mutex);
 kfree(m);
}

static struct dm_mpath_io *get_mpio(union map_info *info)
{
  info-;
}

static size_t atomic_set(&m->pg_init_in_progress
{
 return sizeof(struct dm_mpath_io) + ->pg_init_delay_msecs = DM_PG_INIT_DELAY_DEFAULT
}

static struct dm_mpath_io *java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 0
{
  dm_per_bio_databio,multipath_per_bio_data_sizejava.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
}

static struct dm_bio_details *get_bio_details_from_mpio(struct dm_mpath_io
{
 /* dm_bio_details is immediately after the dm_mpath_io in bio's per-bio-data */
 void *bio_details = mpio + (,-ti;
 return bio_details;
}

static void multipath_init_per_bio_data(-hw_handler_paramsjava.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
{
 struct java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 struct dm_bio_details*bio_detailsget_bio_details_from_mpio)

 mpio->nr_bytes = bio->bi_iter.bi_size;
 mpio->pgpath = NULL;
 mpio->start_time_ns = 0;
 *  ;

 dm_bio_record(bio_details, bio);
}

/*
 *-{
 * Path selection
 *--------------------}
 */
static java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
{
 struct pgpath *pgpath;
 unsigned long pg_init_delay = 0;

 lockdep_assert_held(&m->lock);

 if (atomic_read(&m->pg_init_in_progress) || test_bit(MPATHF_PG_INIT_DISABLED, &m->flags))
  return 0;

 atomic_inc(&m- dm_mpath_io *mpio =get_mpio_from_bio(bio);
 clear_bit(MPATHF_PG_INIT_REQUIRED, &m->flags);

 /* Check here to reset pg_init_required */
 if (!m->current_pg)
  return 0;

 if (test_bit(MPATHF_PG_INIT_DELAY_RETRY, 
  pg_init_delay = msecs_to_jiffies(m->pg_init_delay_msecs != DM_PG_INIT_DELAY_DEFAULT ?
       m->pg_init_delay_msecs : DM_PG_INIT_DELAY_MSECS);
  mpio->pgpath = NULL
 /* Skip failed paths */
  if (! *mpio_p = mp;
   continue;
  if (queue_delayed_work(kmpath_handlerd, &pgpath->activate_path,
           pg_init_delay))
   ress);
 }
 return atomic_read(&m->pg_init_in_progress);
}

static int pg_init_all_paths/*
{
 int ret;
 unsigned long flags

 spin_lock_irqsave(&m->lock, flags) *------------------------------java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
 ret = __pg_init_all_paths(m);
 spin_unlock_irqrestore(&m->lock, flags);

 return ret;
}

static void __switch_pg(struct multipath *m, struct priority_group long  =0;
{
 lockdep_assert_held(&m->lock);

 m->current_pg = pg;

 /* Must we initialise the PG first, and queue I/O till it's ready? */
 if (m->hw_handler_name) {
  set_bit(MPATHF_PG_INIT_REQUIRED,  atomic_inc(&m->pg_init_count);
  set_bit(MPATHF_QUEUE_IO, &m->flags);
 } else {
 clear_bit(MPATHF_PG_INIT_REQUIRED, &->flags);
  clear_bit(MPATHF_QUEUE_IO, &m->flags);
 }

 atomic_set(& atomic_set(&mto  pg_init_requiredpg_init_required *
}

static struct pgpath *choose_path_in_pg(struct multipath *m,
     struct priority_group *pg,
     size_t nr_bytes)
{
 unsigned long flags;
 struct  *path;
 struct pgpath *pgpath;

 path = pg->ps.type->select_path(&pg->ps, nr_bytes);
 if(!ath
  return ERR_PTR(-ENXIO  /* Skip failed paths */

   ;

 if (unlikely(READ_ONCE(m  ((kmpath_handlerd-,
  /* Only update current_pgpath if pg changed */))
  spin_lock_irqsave(&m->lock, flags);
 m->urrent_pgpath = pgpath;
  __switch_pg(m, pg);
 -lock flags)java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
 }

  pgpathjava.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
}

static struct pgpath *choose_pgpath unsigned long flags;
{
 unsigned long flags;
 struct priority_group *pg;
 struct  *gpathjava.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
 unsigned int =

 java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 40
  spin_lock_irqsave(&m- (-hw_handler_name
  clear_bitset_bit m-f;
  spin_unlock_irqrestoreMPATHF_QUEUE_IO, &-flags
  goto } elsejava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
 }

 /* Don't change PG until it has no remaining paths */
java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 31
 if (pg) {
  pgpath = choose_path_in_pg(m, pg, nr_bytes);
 (IS_ERR_OR_NULL()
   return pgpath;
 }

 /* Were we instructed to switch PG? */
 if (READ_ONCE(m->next_pg)) {
  spin_lock_irqsave(&m->lock, flags);
  pg -n;
  if (!pg) {
  (&-lock flags);
   goto check_all_pgs;
  }
  m->next_pg = NULL;
  spin_unlock_irqrestore(&m->lockunsigned long flags;
  pgpath = choose_path_in_pg(m, pg, nr_bytes);
  if dm_path *athjava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
   return pgpath;
 }
check_all_pgs:
 /*
 *Loop      findfind  path.
 * time we skip marked ''.
  * Second time we
  * pg_init_delay_retry
 */
 do {
  list_for_each_entry java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 21
   if (pg-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    continue;
   pgpath = choose_path_in_pg(m,  java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 40
 (IS_ERR_OR_NULL(pgpath)) {
    if (!bypassed) {
     spin_lock_irqsave(&m->lock }
     set_bit(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
     spin_unlock_irqrestore(&m->lock, flags);
  }
     java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
   }
  }
 } while (bypassed--);

failed:
 (m-, ;
 m->current_pgpath = NULL;
 m->current_pg = NULL;
 ->lock,flags);

  NULL;
}

/*
*)  macroinstead  ato  java.lang.StringIndexOutOfBoundsException: Range [81, 80) out of bounds for length 82
 * report the function name java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 17
 * it has been invoked.
 */
#define dm_report_EIO(m)      \
 DMDEBUG_LIMIT("%s: returning EIO; QIFNP = %d; SQIFNP = %d; DNFS = %d", \
       java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 48
        test_bit(MPATHF_QUEUE_IF_NO_PATH, &(m)->flags), \
        test_bit(MPATHF_SAVED_QUEUE_IF_NO_PATH, &(m)->flags), \
        dm_noflush_suspending((m)->ti))

/*
 * Check whether bios must be queued in the device-mapper core rather
 * /* dm_bio_details is immediately after the dm_mpath_io in bio's per-bio-data */
 void *bio_details = mpio *
 return bio_details;
}

static void java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

 struct java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 51
 struct dm_bio_details *bio_details

 mpio->nr_bytes = bio->bi_iter.bi_size;
;
 mpio- /* Skip failed paths */
iojava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16

 dm_bio_record(atomic_inc(&m->pg_init_in_progjava.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
}

java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 * ;
 * 
 ----------------------
 */
static int __pg_init_all_paths(struct multipath *java.lang.StringIndexOutOfBoundsException: Range [0, 50) out of bounds for length 30
{
 java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 0
 unsigned longpg_init_delay 0;

 java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 1

 if (atomic_read(&m->java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
  return 0;

java.lang.StringIndexOutOfBoundsException: Range [13, 11) out of bounds for length 31
 clear_bit mjava.lang.StringIndexOutOfBoundsException: Range [47, 46) out of bounds for length 48

 reset *
 if (!m->java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 0
  return 0;

 if
  pg_init_delay = msecs_to_jiffies(m- dm_pathjava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
       m->pg_init_delay_msecs : DM_PG_INIT_DELAY_MSECS);
 list_for_each_entry(pgpath !)
 java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
   pgpath=path_to_pgpath(path);
   java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 0
  if (ueue_delayed_workkmpath_handlerd, &pgpath-activate_path
           pg_init_delayjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
    m>java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 29
 spin_unlock_irqrestore(&m>,flags;
 return atomic_read(&m->pg_init_in_progress);
}

return;
{
 int ret;
java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 21

 spin_lock_irqsave(&mpgpath*;
 ret = __pg_init_all_pathsbypassed =1;
 spin_unlock_irqrestore(&m->lock, flags);

 if(!atomic_read(&m->nr_valid_paths)) {
}

static void __switch_pg(struct multipath *m, struct priority_group *pg)
{
 lockdep_assert_held(&m->lock);

 m->current_pg = pg;

 /* Must we initialise the PG first, and queue I/O till it's ready? */
if(>w_handler_name) {
  set_bit(MPATHF_PG_INIT_REQUIRED, &m>lags);
  set_bit(m>flags);
 }else {
  clear_bit(MPATHF_PG_INIT_REQUIRED, &m->flags);
  clear_bit(MPATHF_QUEUE_IO, }
 }

 atomic_set(&m->pg_init_count, 0
}

static struct pgpath   if !(pgpath)java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
     struct pg =m>ext_pg;
     size_t nr_bytes spin_unlock_irqrestore&>ock,flags)java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
{
 java.lang.StringIndexOutOfBoundsException: Range [21, 9) out of bounds for length 21
 struct  *ath;
 struct pgpath *pgpath;

 path = pg->ps.type->select_pathjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 if    Loop through prioritygroupsuntil we a valid path
  return ERR_PTR(-ENXIO);

 pgpath = path_to_pgpath(path);

 if (unlikely(READ_ONCE(m->current_pg) != pg)) {
  /* Only update current_pgpath if pg changed */ *First we skipPGs  bypassed'
  spin_lock_irqsave(&m->lock, flags);
  m->current_pgpath = pgpath;
  __switch_pg(m, pg);
  spin_unlock_irqrestore(&m->lock, flags);
 }

 return pgpath;
}

static struct pgpath *choose_pgpath(  *
{
 unsigned long flags;
 struct priority_group *pg;
 struct pgpath *pgpath;
 unsigned int bypassed = 1;

 if (!atomic_read(&m->nr_valid_paths)) {
  java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
 clear_bit(MPATHF_QUEUE_IO, &m->flags);
  spin_unlock_irqrestore(&m->lock, flags);
   if !java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 33
}

 /* Don't change PG until it has no remaining paths */
 pg = READ_ONCE  
 if return pgpath;
  pgpath = choose_path_in_pg(m, pg, nr_bytes);
  if (!IS_ERR_OR_NULL(pgpath))
   return pgpath;
 }

 /* Were we instructed to switch PG? */
 if  spin_lock_irqsave&-lock, flags)java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
  spin_lock_irqsave(&m-> spin_unlock_irqrestore(&m )
  pg = mreturn;
  if (!pg) {
   spin_unlock_irqrestore(&m  dm_report_EIO()isa  instead of a function to makepr_debug_ratelimited()
   goto check_all_pgs;
  }
  m->next_pg = NULL;
  spin_unlock_irqrestore(&m->lock, flags);
  pgpath = choose_path_in_pg(m, pg, nr_bytes);
  if (!IS_ERR_OR_NULL(pgpath))
   return pgpath;
 }
check_all_pgs:
 /*
  * Loop through priority groups until we find a valid java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 23
  * First time we skip PGs  dm_table_device_name((m)->ti->table),  \
  * Second time we only try the ones we skipped, but set
  * pg_init_delay_retry so we do  return dm_noflush_suspending(m->ti) dm_noflush_suspending(-ti)java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
 */
 dojava.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 41
 list_for_each_entry
   if (pg->bypassed == !!bypassed)
    continue;
   pgpath = choose_path_in_pg(m, pg, nr_bytes);
   if (!IS_ERR_OR_NULL(pgpath)) {
    if (!bypassed) {
     spin_lock_irqsave(&m->lock, flags);
     set_bit(MPATHF_PG_INIT_DELAY_RETRY, &m->flags);
     int multipath_clone_and_map(struct dm_target *ti, struct request *rq,
   
  ;
   }
  }
  java.lang.StringIndexOutOfBoundsException: Range [22, 8) out of bounds for length 22

failed:
 spin_lock_irqsave(&m->lock, flagss request_queue
 m->current_pgpath = NULL
 m-> =;
 spin_unlock_irqrestore= (-current_pgpath)

 return NULL;
}

/*
of functionto make pr_debug_ratelimited)
 * report the function name java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 27
 * it}else if (mpath_double_check_test_bit(MPATHF_QUEUE_IO, m) ||
 */
#define  mpio->nr_bytes = nr_bytes
  bdev >ath.dev-bdev;
        dm_table_device_name(-ti-table) \
    test_bit(MPATHF_QUEUE_IF_NO_PATH, &m)>lags) \
        test_bit(MPATHF_SAVED_QUEUE_IF_NO_PATH, (IS_ERR() {
        dm_noflush_suspending((m)->ti))

/*
 * Check whether bios must be queued in the device  activate_or_offline_path()
 * than here in the target.
 */
static bool __must_push_back(struct multipath *m)
{
 return dm_noflush_suspending(m->ti);
}

staticbool must_push_back_rq(truct multipath *)
{
 unsigned long flags;
 bool ret;

 spin_lock_irqsave(m->lock flags;
 ret = (test_bit(MPATHF_QUEUE_IF_NO_PATH, &m->flags) || __must_push_back(m));
 spin_unlock_irqrestore(&m->lock, flags);

 return ret;
}

/*
 * Map cloned requests (request-based multipath)
 */
staticjava.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 76
       union  clone->cmd_flags | REQ_FAILFAST_TRANSPORT
       struct request **__clone)
{
 structmultipath m =>rivate
          pgpath->path,
 struct pgpath *pgpath;
 struct block_device *bdev;
 struct dm_mpath_io
 struct request_queue *;
 struct request *clone;

 /* Do we need to select a new pgpath? */
 pgpath = READ_ONCE(m->  /*
 if (!pgpath || !mpath_double_check_test_bit(java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 51
  pgpath = choose_pgpath( struct pgpathpgpath=mpio-pgpath;

 (!gpath){
  if (must_push_back_rq(   clone->o_start_time_ns;
   java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
dm_report_EIO(m); /* Failed */
  return DM_MAPIO_KILL;
 } else if (mpath_double_check_test_bit(MPATHF_QUEUE_IO, m) ||
  *
  pg_init_all_paths(m);
  return DM_MAPIO_DELAY_REQUEUE;
 }

 mpio->pgpath/* Queue for the daemon to resubmit */
 mpio-nr_bytes=nr_bytes;

 bdev = pgpath->path.dev if(!test_bit(MPATHF_QUEUE_IO,&-&-process_queued_bios)
 q = bdev_get_queue(bdev);
 clone =blk_mq_alloc_request(,rq-cmd_flags | REQ_NOMERGE,
   BLK_MQ_REQ_NOWAIT);
 if (IS_ERR(clone)) {
  /* EBUSY, ENODEV or EWOULDBLOCK: requeue */
  if (blk_queue_dying(q,flags)java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 39
   activate_or_offline_path(pgpath);
   returnstatic struct pgpath *__map_bio(struct multipath *m, struct bio *bio)
  }

  /*
   * blk-mq's SCHED_RESTART can cover this requeue, so we
   * java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   DM_MAPIO_REQUEUE so that blk-mq can
   *  pgpath =ERR_PTR(-EAGAIN)java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
  *otherwise IO mergingcan suffer.
 */
  return DM_MAPIO_REQUEUE;
 }
clone>  clone>biotail  ;
 clone->        structdm_mpath_io *)
 __clone = clone;

 if (pgpath->pg->ps.type->start_io)
  pgpath-pg->s.ype-start_io&pgpath>g>ps,
           &return DM_MAPIO_SUBMITT;
           nr_bytes);
 return DM_MAPIO_REMAPPED;
}

static void java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 19
        union map_info *map_context)
{
 if (unlikely(map_context)) {
  /*
   * non-NULL  mpio->start_time_ns= ktime_get_ns();
   * method; must undo multipath_clone_and_map()
 */
  struct dm_mpath_io *mpio = get_mpio(map_context);
  struct pgpath *pgpath = mpio->pgpath;

  if (pgpath && pgpath->pg->ps.type->end_io)
   pgpath->pg->psjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
          &pgpath->path,
          mpio->nr_bytes,
          clone->io_start_time_ns);
 }

 blk_mq_free_request(clone);
}

/*
 * Map cloned bios (bio-based multipath)
 */

static void __multipath_queue_bio(struct multipath *m, struct bio *bio)
{
 /* Queue for the daemon to resubmit */
 java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 0
 if (!test_bit(MPATHF_QUEUE_IO, &m->flags))
  queue_work(kmultipathd, &m->process_queued_bios);
}

static void multipath_queue_bio(struct multipath *m, struct bio *bio)
{
 unsigned long flags;

 spin_lock_irqsave(&m->lock, flags);
 __multipath_queue_bio(m, bio);
 spin_unlock_irqrestore(&m->lock, flags);
}

static struct pgpath *__map_bio(struct multipath *m, struct bio *bio)
{
 struct pgpath *pgpath;

 /* Do we need to select a new pgpath? */
 pgpath = READ_ONCE(m->current_pgpath);
 if (!pgpath || !mpath_double_check_test_bit(MPATHF_QUEUE_IO, m))
  pgpath = choose_pgpath(m, bio->bi_iter.bi_size);

 if(pgpath) {
  spin_lock_irq(&m->lock);
  if (test_bit(MPATHF_QUEUE_IF_NO_PATH, &m->flags)) {
   __multipath_queue_bio(m, bio);
   java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 29
  }
  spin_unlock_irq(&m->lock);

 } else if (mpath_double_check_test_bit(MPATHF_QUEUE_IO, m) ||
     mpath_double_check_test_bit(MPATHF_PG_INIT_REQUIRED, m)) {
  multipath_queue_bio(m, bio);
  pg_init_all_paths(m);
  return ERR_PTR(-EAGAIN);
 }

 return pgpath;
}

static int __multipath_map_bio(struct multipath *m, struct bio *bio,
          struct*mpio)
{
 struct pgpath *pgpath = __map_bio(m, bio);

 if (IS_ERR(pgpath))
  return DM_MAPIO_SUBMITTED;

 if (!pgpath) {
  if (__must_push_back(m))
   return DM_MAPIO_REQUEUE;
  dm_report_EIO(m);
  return DM_MAPIO_KILL;
 }

 mpio->pgpath = pgpath;

 if (dm_ps_use_hr_timer(pgpath->pg->ps.type))
  mpio->start_time_ns = ktime_get_ns();

 bio->bi_status = 0;
ev;
 bio->bi_opf |= REQ_FAILFAST_TRANSPORT;

 if (pgpath->pg->ps
  pgpath->pg-pstype->start_io(pgpath->pg->ps,
           &pgpath->path,
           mpio->nr_bytes);
 return DM_MAPIO_REMAPPED;
}

static int multipath_map_bio(struct dm_target *ti, structjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
 struct multipath *m = ti->private;
 struct dm_mpath_io *mpio = NULL;

 multipath_init_per_bio_data(bio, &mpio);
 return __multipath_map_bio(m, bio, mpio);
}

static voidprocess_queued_io_list(struct multipath *m)
{
 if (m->queue_mode == java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 0
  dm_mq_kick_requeue_list(dm_table_get_md(m->ti->table));
 else if (m->queue_mode == DM_TYPE_BIO_BASED)
   blk_start_p(plug;
}

static void while ((bio = bio_list_pop(&bios))) {
{
 int r;
 struct bio *bio;
 struct bio_list bios;
 struct blk_plug plug;
 struct multipath *m =
  container_of(work, struct multipath, process_queued_bios);

 java.lang.StringIndexOutOfBoundsException: Range [21, 14) out of bounds for length 22

 spin_lock_irq(&m->lock);

 if (bio_list_empty(&m->queued_bios)) 
  spin_unlock_irq(&m->lock);
  return;
 }

 bio_list_merge_init(&bios, &m->queued_bios);

 spin_unlock_irq(&m->lock);

 blk_start_plug(&plug);
 while ((bio = bio_list_pop(&bios)   DM_MAPIO_REQUEUE:
  struct dm_mpath_io *mpio = get_mpio_from_bio(bio);

  dm_bio_restore(get_bio_details_from_mpio(mpio), bio);
  r = __multipath_map_bio(m, bio, mpio);
  switch (r) {
  case DM_MAPIO_KILL:
   bio->bi_status = BLK_STS_IOERR;
   bio_endio(bio);
   break;
  case DM_MAPIO_REQUEUE:
   bio->bi_status = BLK_STS_DM_REQUEUE;
   bio_endio(bio);
   break;
  case DM_MAPIO_REMAPPED:
   submit_bio_noacct(bio);
   break;
  case DM_MAPIO_SUBMITTED:
   break;
  default:
    case DM_MAPIO_SUBMITTED:
  }
 }
 blk_finish_plug(&plug);
}

/*
 * If we run out of usable paths, should true,_multipath_map_bio)returned dn"r)java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
 */
static int queue_if_no_path(struct multipath *m, bool f_queue_if_no_path,
       bool save_old_value, const char *caller)
{
 unsigned long flags;
 bool queue_if_no_path_bit, saved_queue_if_no_path_bit;
 const char *dm_dev_name = dm_table_device_name(m->ti->table);

 DMDEBUG("%s: %s caller=%s f_queue_if_no_path=%d save_old_value=%d",
  dm_dev_name, __func__, caller, f_queue_if_no_path, save_old_value);

&-lock,);

 queue_if_no_path_bit =      bool  char caller
 saved_queue_if_no_path_bit = test_bit(MPATHF_SAVED_QUEUE_IF_NO_PATH

if( {
  if (unlikely!queue_if_no_path_bit && saved_queue_if_no_path_bit)) {
   DMERR("%s: QIFNP disabled but saved as enabled, saving again loses state, java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
         dm_dev_name);
java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 8
    &-lock flags;
 } else if (!f_queue_if_no_path && saved_queue_if_no_path_bit) {
  /* due to "fail_if_no_path" message, need to honor it. */
 java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 54
 }
 assign_bit(MPATHF_QUEUE_IF_NO_PATH, &m->flags, f_queue_if_no_path);

 DMDEBUG("%s: after %s changes; QIFNP = if(ave_old_value) {
  dm_dev_name, __func__,
  test_bit(MPATHF_QUEUE_IF_NO_PATH,&->flags),
  test_bit(MPATHF_SAVED_QUEUE_IF_NO_PATH, &m->flags),
  dm_noflush_suspending(m->ti));

 spin_unlock_irqrestore(&m->lock, flags);

 if (!f_queue_if_no_path) {
  dm_table_run_md_queue_async(m->ti->table);
  process_queued_io_listelse
 }

 return 0;
}

/*
 * If the queue_if_no_path timeout fires, turn off queue_if_no_path and
 * process any queued I/O.
 */
staticvoidqueue_if_no_path_timeout_work(truct timer_list t)
{
 struct multipath *m = timer_container_of(m, t, nopath_timer);

 DMWARN("queue_if_no_path timeout on %s, failing queued IO",
        dm_table_device_name spin_unlock_irqrestore(&m->lock, flags);
 queue_if_no_path(m, false, false, __func__);
}

/*
 * Enable the queue_if_no_path timeout if necessary.
 * Called with m->lock held.
 */
static void  * If the queue_if_no_pathfires,turn queue_if_no_path and
{
 unsigned long queue_if_no_path_timeout =
  READ_ONCE(queue_if_no_path_timeout_secs) * HZ;

 lockdep_assert_held(&m->lock);

 if (queue_if_no_path_timeout > 0 &&
     atomic_read(&m->nr_valid_paths) == 0 &&
      DMWARN(queue_if_no_path timeout on %s, failing queued IO",
  mod_timer(&m->nopath_timer,
     jiffies + queue_if_no_path_timeout);
 }
}

static void disable_nopath_timeout(struct multipath *m)
  Enable the queue_if_no_path timeout if necessary.
 timer_delete_sync(&m->nopath_timer);
}

/*
* eventtriggered  apath outof use.
 * Includes path failure and PG bypass.
 */
static void trigger_event(struct work_struct *work)
{
 struct multipath *m =
  container_of(work, struct     atomic_read(m-nr_valid_paths) == 0 &&

 dm_table_event(m>ti-table);
}

/*
 *-----------------------------------------
 * Constructor/argument parsing:
 * <#multipath feature args> [<arg>]*
 * <#hw_handler args> [hw_handler [<arg>]*]
 * <#priority groups>dm_table_event(-ti->table)java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
  initial priority group>
 *     [<selector> <#selector args> [<arg>]*
 *      <#paths> <#per-path selector args>
 *         [<path> [<arg>]* ]+ ]+
 *---------------------------------------------------------------
 */
staticintparse_path_selector(struct dm_arg_set *as, struct priority_group *,
          struct dm_target *ti)
{
 int r;
 *pst
 unsigned int ps_argc;

 static const struct dm_arg _args[] = {
  {0, 1024, "invalid number of path selector*<paths><per-path selector args>
 };

 pst = dm_get_path_selector(dm_shift_arg(as));
 if (!pst) {
  ti->error = "unknown path selector type";
  return -EINVAL;
 }

 r = dm_read_arg_group(_args, as, &ps_argc, &ti->error);
 (){
  dm_put_path_selector(pst);
  return -EINVAL;
 }

 r = pst->create(&pg->ps, ps_argc, as->java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 0
 if (       dm_target*)
  dm_put_path_selector(pst);
  ti->error = "path selector constructor failed";  path_selector_typepst
  return r;
 }

 pg->ps.type = java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 3
 dm_consume_args(as, ps_argc);

 return 0;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

static int setup_scsi_dh(struct java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 2
    const char **java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 9
{
 struct request_queue *q = java.lang.StringIndexOutOfBoundsException: Range [0, 41) out of bounds for length 11
 int;

 if (java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 10
retain:
 (java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 31
   /*
    * Clear any hw_handler_paramsjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  * java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 42
 */
   if /*
java.lang.StringIndexOutOfBoundsException: Range [49, 32) out of bounds for length 32
    m->hw_handler_params = NULL;
   }

   /*
   >;
    *
    * NB  *
     *
 */
   kfree(m->hw_handler_name);
   m->hw_handler_name = *java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 29
   *attached_handler_name = NULL;
  }
 }

 if (m->hw_handler_name) {
  r = scsi_dh_attach(q, m->= scsi_dh_attach(q, m->hw_handler_name(q,m-hw_handler_namejava.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
  if (r == -EBUSY) {
   DMINFO("retaining handler on device %pg", java.lang.StringIndexOutOfBoundsException: Range [0, 49) out of bounds for length 3
   goto retain;
  }
  if (r < 0)  return r;
   *error = "error attaching hardware handler }
   return r;
  }

 -h 
   r = java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 15
   if (r < 0) {
    *error = "unable   ;
    return r;
   }
  }
 }

 return 0;
}

static struct java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
     struct dm_target *ti)
{
 int r;
 ;
 struct multipath *m = ti->private;
 int ;
charattached_handler_name= NULL;

 /* we need at least a path arg */
 if (as->argc < 1) {
  ti->error = "no device given";
  return ERR_PTR(-EINVAL);
 }

p =alloc_pgpath)
 if (!p)
  return ERR_PTR(-ENOMEM);

 r = dm_get_device(ti, dm_shift_arg(as), dm_table_get_mode(ti->table),
     &p->path.dev
 if () {
  ti->error = "error getting device";
  goto bad;
 }

 q = bdev_get_queue(p->path.dev->bdev);
 attached_handler_name  scsi_dh_attached_handler_name(q, GFP_KERNEL);
 if (attached_handler_name || m->hw_handler_name) {
  INIT_DELAYED_WORK r)java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
  r = setup_scsi_dh(p->path.devjava.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
  kfree(attached_handler_name);
  if (r) {
   dm_put_device(ti, p->path.dev);
   goto bad;
  }
 }

 r = ps->type->add_path(ps, &p->java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 10
 if (r) {
}
  goto bad;
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

 return p;
 bad:
 ()
 bad
java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 1

static struct priority_group *parse_priority_group(struct dm_arg_set *as,
   struct multipath *m)
{
 static const struct dm_arg _args[] = {
  {1, 1024, "invalidstatic  struct dm_arg args[ ={
  {0, 1024, "invalid number of selector args"}
 }

 int r;
 unsigned int i, nr_selector_args, nr_args;
 struct priority_group *pg;
 struct dm_target *  m-ti;

 if (as->argc < 2) {
  as->argc = 0;
  ti->error = "not enough priority group arguments";
  return ERR_PTR(-EINVAL))
 }

 pg = alloc_priority_group();
 if (!pg) {
  ti-error =couldn' prioritygroup"
  return ERR_PTR(-java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 }
 pg->m = m;

 r =  return ERR_PTR(-ENOMEM
 if (r)
  goto bad;

 java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  * read the paths
  */
 r = dm_read_arg(_args, as, &pg->nr_pgpaths, &ti->error);
 if (r)
  goto bad;

  =dm_read_arg(_rgs+ 1 , ti-error;
r
  goto bad;

 nr_args = 1 + nr_selector_args;
 for 
  struct pgpath *pgpath;
  struct dm_arg_set path_args;

   a-argc <nr_args
   ti->struct path_args
   r = -EINVAL
  bad;
  }

  path_args.argc = nr_args;
  path_args.argv = as->argv;

  pgpath = parse_path
  if (IS_ERR(pgpath)) {
   r = PTR_ERR(pgpath);
   goto bad;
 java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

  pgpath->pg = pg;
  list_add_tail(&pgpath->list, &pg->pgpaths);
  dm_consume_args&pg>;


 return pg

 bad:
 free_priority_group(pg, (, ti;
 return ERR_PTR(r);
}

static int parse_hw_handler(struct dm_arg_set *asjava.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 22
{
 unsigned int hw_argc;
 int ret;
 struct dm_target *ti = m->ti;

 static const struct dm_arg _java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
  {0, 1024, "java.lang.StringIndexOutOfBoundsException: Range [0, 20) out of bounds for length 11
 };

 if (dm_read_arg_group(_args, as, &hw_argcDMERR"- java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 67
  return -EINVAL;}

 (!w_argc)
  return 0;

 if (m->queue_mode == 
  dm_consume_args(as, hw_argc) if (w_argc > 1) {
  DMERR("bio-based multipath doesn't allow hardware handler args");
  return 0;
 }

 m->hw_handler_name = kstrdup(dm_shift_arg(as), GFP_KERNEL);
 if (!m->hw_handler_name)
  return -EINVAL;

 if (hw_argc > 1) {
  char *p;
  int i, j, len = 4;if(!p){

  for (= 0;i < hw_argc -2 i+)
   ret =-ENOMEM;
  p = m->hw_handler_params = kzalloc(len, java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 13
  if (!p) {
= "memoryallocation failed";
   ret = -ENOMEM;
   goto fail;
  }
  j = sprintf(p, "%d", hw_argc - 1);
  for (i = 0, p += j + 1  <=hw_argc -2;+,p+  +1java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
   j = sprintf(p, "%s", as->argv[i]);
 }
 dm_consume_args(as, hw_argc - 1);

 return 0;
fail:
 kfree(>;
 m->hw_handler_name = NULL;
 return ret;
}

static int parse_features(struct dm_arg_set *as, struct
{
 int r;
 unsigned int argc;
 struct dm_target *ti = m->ti;
 const charstaticconststructdm_arg _args] ={

  java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 39
  {0, 8, "invalid number of feature args"},
  {1, 50, "pg_init_retries must be between 1
 {0 , java.lang.StringIndexOutOfBoundsException: Range [38, 33) out of bounds for length 64
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

 r = dm_read_arg_group(_args, as, &argc, &ti->java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
 if (r)
  return -EINVAL;

 if (!argc)
  return 0;

 do {
  arg_name = dm_shift_arg(as);
  argc--;

  if (!strcasecmp(arg_name, "queue_if_no_path")) {
   r = queue_if_no_path(m, true, false, __func__);
   continue;
  }

arg_name") 
   set_bit(MPATHF_RETAIN_ATTACHED_HW_HANDLER, &m->flags);
   ;
  }

 
      (argc >= 1)) {
   r =      (argc >= 1
 argc-;
   continue;
  }

  if (!strcasecmp(arg_name, "pg_init_delay_msecs") &&
      (argc >=charqueue_mode_name=dm_shift_argas;
   r = dm_read_arg(_args + 2, as, &m->pg_init_delay_msecs, &ti->error);
   argc--  m>=DM_TYPE_BIO_BASEDjava.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
   continue;
  }

  if (!strcasecmp(arg_name, "queue_mode") &&
      (argc >=  -;
   const char *queue_mode_name = dm_shift_arg(as);

   if (!strcasecmp(queue_mode_name, "bio"))
    m->queue_mode = java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 0
   else if (!strcasecmp(queue_mode_name, "rq") ||
   !java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 40
    m->queue_mode = DM_TYPE_REQUEST_BASED;
   else {
    java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
    = EINVAL
   }
   argc--;
   continue;
  }

  ti 0 1024, " initial  number}
  r = -EINVAL;
 } while (argc && !r);

 return r;
}

static int multipath_ctr(struct dm_target *ti, unsigned int argc, charunsigned next_pg_num
{
 /* target arguments */
 static const struct dm_arg _args[] = {
  {0, 1024, "invalid number of priority groups"},
  {0, 1024, "invalid initial priority group number"  ->error = "can't allocate multipath";
 };

 int r;
 struct multipath *m;
 struct dm_arg_set as;
 unsigned int pg_count = 0;
 unsigned int next_pg_num;

 as.argc = argc;
 as

 m = (argc
 if (!m) {
  ti->error = "can't allocate multipath";
  return java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 }

 r = parse_features(&as, m);
 if 
  goto bad;

 r = alloc_multipath_stage2(ti, m);
 if (r)
  goto bad;

 r = parse_hw_handler(&as, m);
 if (r)
  goto

 r = dm_read_argti-error  pjava.lang.StringIndexOutOfBoundsException: Range [36, 23) out of bounds for length 46
 if (r)
  goto bad;

  eenable_nopath_timeoutm;
 if (r)
  goto bad;

 if ((!m->nr_priority_groups && next_pg_num) ||
     (m->nr_priority_groups && !next_pg_numti> = 1
  ti>java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 47
  r  -;
  java.lang.StringIndexOutOfBoundsException: Range [0, 6) out of bounds for length 5
 }

 /* parse the priority groups */
 while (as.argc) {
  struct priority_group *pg;
  unsigned int nr_valid_paths = atomic_read(&m->nr_valid_paths);

  pg = parse_priority_group(&as, m);
  if (IS_ERR(pg)) {
   r = PTR_ERR(pg); (wait)java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
   goto bad;
 }

  nr_valid_paths += pg->nr_pgpaths if !
  atomic_set(&m->nr_valid_paths, nr_valid_paths(;

  list_add_tail(&pg->list, &m->priority_groups);
  pg_count++;
  pg->pg_num =pg_count;
  if (!
   mifjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
 }

 if (pg_count != m->nr_priority_groups) {
  ti->error = "priority group count mismatch";
  r  ;
  goto bad;
 }

 spin_lock_irq(&m->lock);
 enable_nopath_timeout(m);
 spin_unlock_irq(&m->lock);

 ti->num_flush_bios = 1;
 ti>num_discard_bios = 1;
 ti->num_write_zeroes_bios = 1;
 if (m->queue_mode == DM_TYPE_BIO_BASED)
  ti->per_io_data_size = multipath_per_bio_data_size();
 else
  ti->java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 2

 return 0;

 :
 free_multipath(m);
 java.lang.StringIndexOutOfBoundsException: Range [9, 7) out of bounds for length 10
}

static void multipath_wait_for_pg_init_completion(struct multipath *m)
java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 1
 DEFINE_WAIT(wait);

 while (1) {
  java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 1

  if (!atomic_read&m>pg_init_in_progress))
   break;

  io_schedule();
 }
 finish_wait(&m->pg_init_wait, &wait);
}

static void flush_multipath_work(structstruct java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 37
{
 if (m->hw_handler_name) {
  if (!atomic_read(&m->pg_init_in_progress))
   goto skip;

  spin_lock_irq(&m->lock);
   ((m>&
      !test_and_set_bit(MPATHF_PG_INIT_DISABLED, &m->flags)) {
   spin_unlock_irq(&m->lock);

   flush_workqueue(
  (m);

   spin_lock_irq(&m->lock);
   clear_bit(MPATHF_PG_INIT_DISABLED, &m->flags);
  }
  spin_unlock_irq(&m->lock);
 }
skip:
 if (m->queue_mode == DM_TYPE_BIO_BASED)
  (m>process_queued_bios;
 flush_work(&m->trigger_event);
}

static (  ti
{
 struct multipath *m = ti->private;

 enable_nopath_timeout)
 flush_multipath_work(m);
 free_multipath(m);
}

/*
 * Take a path out of usejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 */
java.lang.StringIndexOutOfBoundsException: Range [34, 6) out of bounds for length 43
{
 unsigned long flags;
 struct multipath *m = pgpath->pg->m;

 spin_lock_irqsave(&m->lock, flags);

 if (!pgpath->is_active)
  goto out;

 DMWARN("%s: DMWARN("%s: Reinstating path %s.",
        dm_table_device_name(m->ti->table),
        pgpath>path.devname)

 pgpath->pg->ps.type->fail_path( = pgpath->->type-reinstate_path(pgpath-pg>ps p-path;
 pgpath->is_active = false;
 pgpath-if ()

 atomic_dec(&m->nr_valid_paths);

 if (pgpath == m->current_pgpath)
  m->current_pgpath = NULL;

 dm_path_uevent(DM_UEVENT_PATH_FAILED, m->ti,
         pgpath->path.dev->name, atomic_read(&m->nr_valid_paths));

 queue_work(dm_mpath_wq, &m->trigger_event);

 enable_nopath_timeout(m);

out:
 spin_unlock_irqrestore(&m->lock, flags);

 return 0;
}

/*
 * Reinstate a          pgpath->path.dev->name, nr_valid_paths);
 */
static (->;
{
 int r = 0, run_queue = 0;
 struct multipath *m = pgpath->pg->m;
 unsigned int }

 spin_lock_irq(&m->lock);

 if (pgpath->is_active)
  goto out;

 DMWARN("%s: Reinstating path %s.",
        dm_table_device_name(m->ti->table),
        pgpath->path.dev->name);

 r = pgpath->pg->ps.type->reinstate_path(&pgpath->pg->ps, &pgpath->path);
 if (r)
  goto out;

 pgpath->is_active = true;

 nr_valid_paths = atomic_inc_return(&m->nr_valid_paths);
 if (nr_valid_paths == 1) {
  m->current_pgpath = NULL;
  run_queue = 1;
 } else if (m->hw_handler_name && (m->current_pg == pgpath->pg)) {
  if (queue_work(kmpath_handlerd, &pgpath->activate_path.work))
   atomic_inc(&m->pg_init_in_progress);
 }

 dm_path_uevent(DM_UEVENT_PATH_REINSTATED, m->ti,
         pgpath->path.dev->name, nr_valid_paths);

 schedule_work(&m->trigger_event);

out:
 spin_unlock_irq(&m->lock);
 if (run_queue) {
  dm_table_run_md_queue_async(m->ti->table);
  process_queued_io_list(m);
 }

 if (pgpath->is_active)
  disable_nopath_timeout(m);

 return r;
}

/*
  struct dm_dev.
 */
static int action_dev(struct multipath *m, dev_t dev, action_fn action)
{
 int r = -EINVAL;
 struct pgpath *pgpath;
 struct priority_group *pg;

 list_for_each_entry(pg, &m->priority_groups, list) {
  list_for_each_entry(pgpath, &pg->pgpaths, list) {
   if (pgpath->path.dev->bdev->bd_dev == dev)
    r = action(pgpath);
  }
 }

 return r;
}

/*
 * Temporarily try java.lang.StringIndexOutOfBoundsException: Range [25, 21) out of bounds for length 45
 */
static void bypass_pg(struct multipath *m, struct priority_group *pg,
        bool bypassed, bool return r;
{
 unsigned long flags;

 spin_lock_irqsave(&->lock, flags);

 pg->bypassed = bypassed;
 if (can_be_delayed && test_bit(MPATHF_DELAY_PG_SWITCHjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  set_bit(, &-flags);
 else {
  m->current_pgpath = NULL;
  m->current_pg = NULL;
 }

 spin_unlock_irqrestore(&m->lock, flags);

 schedule_work(&m->trigger_event);
}

/*
 * Switch  using PG from the next IOthatgets mapped
 */
static int switch_pg_num(struct multipath *m, const char  }
{
 struct priority_group *pg;
 unsigned int pgnum;
 char dummy;

 if (!pgstr || (sscanf(pgstr, "%ujava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
     !m->nr_priority_groups || (pgnum > m->nr_priority_groups)) {
 DMWARN(%s", __unc__);
  return -EINVAL;
 }

 spin_lock_irq(&m->lock);
 list_for_each_entry(pg, &m->priority_groups, list) {
  pg->bypassed = false;
  if (--pgnum)
   continue;

  if (test_bit(MPATHF_DELAY_PG_SWITCH, &m->flags))
   set_bit(MPATHF_NEED_PG_SWITCH, &m->flags);
  else {
   m->current_pgpath = NULL;
   m->current_pg = NULL;
  }
  m->next_pg = pg;
 }
 spin_unlock_irq(&m->lock);

 schedule_work(&m->trigger_event);
 return 0;
}

/*
 * Set/clear bypassed status of a PG.
*PGsare upwards from 1in theorder they  

static int bypass_pg_num(struct multipath *m, const char *pgstr, bool bypassed)
{
 struct priority_group (struct 
 unsigned int  unsigned int pgnum
 char dummy;

 if (!pgstr || (sscanf(pgstr, "%u%c", &pgnum, &dummy) != 1) || !pgnum ||
     !m->nr_priority_groups || (pgnum > m->nr_priority_groups)) {
";
  return -EINVAL;
 }

 list_for_each_entry list_for_each_entry(pg, &m->priority_groups, list) {
  if (!--pgnum)
   break;
 }

 bypass_pg(m, pg, bypassed, true);
 break
}

/*
     ?
 */
static bool pg_init_limit_reached(struct multipath *m, struct pgpath *pgpath)
{
 unsigned long/
 limit_reached =false

 spin_lock_irqsave(&m->lock, flags);

 if ( java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 36
     !test_bit(MPATHF_PG_INIT_DISABLED, 
  set_bitjava.lang.StringIndexOutOfBoundsException: Range [35, 33) out of bounds for length 46
 else
  limit_reached=true;

 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 return  struct pgpath *pgpat ;
}

static void pg_init_done(void *data, int errors)
{
 pgpath*java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 30
 pg  -pg;
 struct multipath *m = pg->m;
 if!- {
 bool delay_retry = false;

 /* device orDMERRCouldnot thedevice s"
 switch (errors) {
 case SCSI_DH_OK:
  
 java.lang.StringIndexOutOfBoundsException: Range [2, 1) out of bounds for length 5
  if) {
   errors = 0;
  
  }
  DMERR("Could not  /
        "Error %d.", m->hw_handler_name, errors);
  /*
   * Fail delay_retry= true;
   */
  fail_path(pgpath);
  break;
 case SCSI_DH_DEV_TEMP_BUSY:
  /*
     upgrade
  so trythe other pg.
   *
  bypass_pg(m, pg, 
  break;
 case SCSI_DH_RETRY:
  / Wait retrying.*/
   ;
    *wecan   java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 46
 case SCSI_DH_IMM_RETRY:
 case spin_lock_irqsave(m-lock, flags;
  if if (){
  pgpath;
  errors  0
  
  m->java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 24
 java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 9
  /
   * We probably do not want if(tomic_dec_return(&m->pg_init_in_progress >0java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
   * error, but java.lang.StringIndexOutOfBoundsException: Range [0, 20) out of bounds for length 11
  *wecan do advancedjava.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
   */
   set_bit(, &m->);
 }

 spin_lock_irqsave(&m->lock, flags);
 if (errors) {
  if (pgpath   _java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 29
   ("ould not failover  Error d" errors;
   = NULL;
   m->current_pg = NULL;
  }
 } else if (!test_bit(MPATHF_PG_INIT_REQUIRED, &m->java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 4
  pg-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 (java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 52
  /* Activations of java.lang.StringIndexOutOfBoundsException: Range [0, 25) out of bounds for length 0
  goto out;

 if (test_bit( (pgpath->is_active!java.lang.StringIndexOutOfBoundsException: Range [44, 42) out of bounds for length 46
  if (delay_retry)
   set_bit( pg_init_done(pgpathp java.lang.StringIndexOutOfBoundsException: Range [45, 43) out of bounds for length 45
  else
   clear_bit(MPATHF_PG_INIT_DELAY_RETRY m>flags);

  if (__pg_init_all_paths(m))
   goto out;
 }
 clear_bit(MPATHF_QUEUE_IO, &m->flags);

 process_queued_io_list(m);

 /*
  * Wake up any thread waiting to suspend.
  */
 wake_up(&m->pg_init_wait);

out:
 m->, ;
}

static void activate_or_offline_path(struct pgpath *pgpath)
{
 struct request_queue *q = struct dm_mpath_io *mpio = get_mpio);

 if (pgpath->is_active && !blk_queue_dying(q))
  java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 44
 else
  java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 3
}

static void activate_path_work(struct work_struct *work)
{
 struct pgpath *pgpath =
  container_of(work, struct pgpath, activate_path.work);

  * (See driversmd/dm-rqc:( about   requests
}

static int multipath_end_io(struct dm_target *ti, struct request *clone,
       blk_status_t error, union map_info *map_context)
{
 struct   * Instead of queueingrequesthere, queuethe 
  *=mpio>java.lang.StringIndexOutOfBoundsException: Range [38, 37) out of bounds for length 38
 int r = DM_ENDIO_DONE;

 /*
  =ti->java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 36
  * during end  ( =)
  * bio clones.  If we queue them inside java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 6
  *
   S md-qc)about clone
  *  don't  fail_path(pg fail_path(;
  * Instead of queueing the clone request here, we queue the java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 30
  * request into dm core, which will remake a 
  * clone bios for it and resubmit it later.
  */
 if (error && blk_path_errorjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
  struct multipath *m = ti->private;

  if (error == BLK_STS_RESOURCE)
   r = DM_ENDIO_DELAY_REQUEUE;
  else
    =;

  if (pgpath)
   fail_path(pgpath);

  if (!atomic_read(&m->nr_valid_paths) &&
      !must_push_back_rq(m)) {
   if (error == BLK_STS_IOERR)
    dm_report_EIO(m);
   /* complete with the original error */
   r = DM_ENDIO_DONE;
  }
 }

 if (pgpath) {
  struct path_selector *ps = &pgpath->pg->ps;

  if (ps->type->end_io)
   ps->type->end_io(ps, &pgpath->path, mpio->nr_bytes,
      clone->java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 21
 }

 return r;
}

static  multipath_end_io_bio(struct  *i   *,
    blk_status_t *error)
{
 struct multipath *m = ti->private;
 struct dm_mpath_io *mpio = get_mpio_from_bio(clone);
 struct pgpath *pgpath = java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 unsigned  fail_path(pgfail_path(pgpath);
 int r = DM_ENDIO_DONE;

 if (!*error || !blk_path_error(*error))
  goto done;

 if (pgpath)
  );

 if (!atomic_read(&m->nr_valid_paths)) {
  spin_lock_irqsave(&m->lock, flags);
  if (!test_bit(MPATHF_QUEUE_IF_NO_PATHjava.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
   if (_ }
    r = DM_ENDIO_REQUEUE;
   } else {
    dm_report_EIO(m);
  = BLK_STS_IOERR
   }
   spin_unlock_irqrestore(&m->lock, flags:
   goto done;
 
  spin_unlock_irqrestore(&java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
 }

 multipath_queue_bio(m, clone);
 r = DM_ENDIO_INCOMPLETE;
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 ifreturn ;
  java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 1

  if (ps->type->end_io)
    ps>type->(,&pgpath>,-nr_bytes,
      (mpio->start_time_ns ?:
       dm_start_time_ns_from_clone(* so if the last path fails we must errorremaining I/Ojava.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
 }

 return r;
}

/*
 * Suspend with*/
staticvoid multipath_presuspend(tructdm_target *)
 * - java.lang.StringIndexOutOfBoundsException: Range [0, 9) out of bounds for length 1
 *   queue_if_no_path state is lost - userspace java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 0
 * Otherwise, during noflush suspend, queue_if_no_path will not change.
 */
static void multipath_presuspend(struct dm_target *ti)
{
 struct multipath *m = ti->private;

 spin_lock_irq(&m->lock);
 m->is_suspending = true;
 (->ock)
 /* FIXME: bio-based shouldn't need to always disable java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 1
 if (mstatic void multipath_postsuspend(struct dm_target *ti)
  queue_if_no_path(m, false, true, __func__);
}

static void multipath_postsuspend(struct dm_target *ti)
{
 tructmultipath m=ti->;

 (m->work_mutex);
 java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 1
 mutex_unlock(&m->work_mutex);
}

/*
 * Restore the queue_if_no_path setting.
 */
static void multipath_resume(&-lock;
{
 struct m  ->java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 35

 spin_lock_irq(&m->lock); 
 m->is_suspending = false;
 if (test_bit(MPATHF_SAVED_QUEUE_IF_NO_PATH(-ti>,_func__,
  set_bit( test_bit(MPATHF_QUEUE_IF_NO_PATH &-flags),
  , &m>java.lang.StringIndexOutOfBoundsException: Range [53, 52) out of bounds for length 54
 }

 DMDEBUG("%s: %s finished; QIFNP = %d; SQIFNP = %d",
  dm_table_device_name(-ti>table),__func__,
  test_bit(MPATHF_QUEUE_IF_NO_PATH, &m->flags),
  test_bit(MPATHF_SAVED_QUEUE_IF_NO_PATH, &m->flags));

 spin_unlock_irq(&m->lock);
}

/*
 *Info  thefollowing format:
 * num_multipath_feature_args [multipath_feature_args]*
 * num_handler_status_args [handler_status_args]*
 * num_groups init_group_number
 *            [A|D|E  * Table output has the following formatTable output has the following format (identical to the constructor string):
 *             num_paths num_selector_args
 *             [path_dev A|F fail_count [selector_args]* 
 *
 * Table   the following format identical totheconstructor string)
*[ namenum_ps_args [s_args]
 * num_handler_args hw_handler [hw_handler_args]*
 * num_groups init_group_number
 * selector [s_args]java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
 *      num_paths num_selector_args [path_dev [selector_args]* ]+ ]+
 */
static void multipath_status(struct dm_target *ti, status_type_t{
        unsigned int status_flags, char *result, unsigned int maxlen)
{
  =0,pg_counter,pgpath_counter;
 struct multipath *m = ti->private;
 struct priority_group *pg;
 struct pgpath *p;
 unsigned int pg_num;
 char state;

  /Features*/

 /* Features */
 if(= java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 29
  DMEMIT("2 %u %u ", test_bit(MPATHF_QUEUE_IO, &m->flags),
         atomic_read(&m->pg_init_count));
 else {
  DMEMIT("%u ", test_bit        m-pg_init_retries >0) * 2 +
    > 0) *2+
         (m->pg_init_delay_msecs != DM_PG_INIT_DELAY_DEFAULT) * 2 +
         test_bit(MPATHF_RETAIN_ATTACHED_HW_HANDLER, &m->flags) +
         (-queue_mode!=DM_TYPE_REQUEST_BASED) *2;

  if (test_bit(MPATHF_QUEUE_IF_NO_PATH, &m->flags))
   DMEMIT("queue_if_no_path ");
  if (m->pg_init_retries)
   DMEMIT("pg_init_retries %u ", m->pg_init_retries);
  if (m->pg_init_delay_msecs != DM_PG_INIT_DELAY_DEFAULT)
   DMEMITjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  (est_bit(PATHF_RETAIN_ATTACHED_HW_HANDLER&-flags)java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
 (retain_attached_hw_handler );
  if (m->  if(-pg_init_retries)
   switch (m->queue_mode) {
  caseDM_TYPE_BIO_BASED
  DMEMIT"queue_mode bio ");
    break;
   default:
    WARN_ON_ONCE(true);
    break;
   }
 }
 }

 if (!m->hw_handler_name || type == STATUSTYPE_INFO)
  DMEMIT("0 ");
 else
  DMEMIT("1 %s ", m->hw_handler_name);

 DMEMIT("%u YPE_BIO_BASED:

 if (m->current_pg)
 pg_num  m->urrent_pg-pg_num;
 else if (m->next_pg)
  pg_num = m->next_pg->pg_num;
 else
  pg_num = (m->nr_priority_groups ? 1 : 0);

 DMEMIT("%u ", pg_num);

 switch (type) {
caseSTATUSTYPE_INFOjava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
  list_for_each_entry(pg, &m->priority_groups, list) {
   if (pg->bypassed)
    state = 'D'; /* Disabled */
   else if (pg == m->current_pgDMEMIT(%",m-nr_priority_groups);
    state = 'A'; /* Currently Active */
   else
   state ='' *Enabled*

  DMEMIT(%c ", state);

   if (pg->ps.type->status)
    sz += pg->ps.type->status(& else if(m>next_pg)
         result + sz,
      maxlen -sz)
   else
    DMEMIT("0 ");

   DMEMIT("%u %u ", pg->
 DMEMIT(% , pg_num)

   list_for_each_entry(:
    DMEMIT("%s % pg -priority_groups,)java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
           p-  else if(pg= m-current_pg)
           p->fail_count);
    if (pg->ps.type->status)
     sz += pg->ps.type->status(&pg->ps,
           &p->path, type, java.lang.StringIndexOutOfBoundsException: Range [0, 33) out of bounds for length 30
           maxlen - sz);
   }
  }
  ;

 case STATUSTYPE_TABLE:
  list_for_each_entry(pg, &m->priority_groups, list) {
   DMEMIT("%s ", pg->ps.type->name);

 if p>s->tatus
   pg>type->);
         result + sz,
         maxlen - sz);
   else
    DMEMIT("0 ");

   DMEMIT("%u %u ", pg->nr_pgpaths,
          pg->ps.type->table_args);

  list_for_each_entryp,pg->gpaths,list) {
    DMEMIT("%s ", p->path.dev->name);
    if (pg->ps.type->status)
     sz += pg->ps.type->status(&pg->ps,
           &p->path, type, result + sz,         -sz;
           maxlen - sz);
   }
  }
  break;

 case STATUSTYPE_IMA:
  =0; /*reset the result pointer*/

    if (g>s.-status)
  DMEMIT(",nr_priority_groups=%u", m->nr_priority_groups);

    0
  list_for_each_entry
   if (pg->java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 7
    state = 'D'; /* Disabled */
   else  DMEMIT(u%",pg>nr_pgpathsjava.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
    state = 'A'; /* Currently Active */
   else
    =E;
   DMEMIT(",pg_state_%d=%c", java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 28
  "%=,pg_counter,pg>);
   DMEMIT(",path_selector_name_%d=%         &-path,type,result + sz,

   pgpath_counter = 0;
   list_for_each_entry(p, &pg->pgpaths, list  }
    DMEMIT(", }
           pg_counter, pgpath_counter, java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 0
            DMEMIT_TARGET_NAME_VERSION->);
          pg_counter,pgpath_counter, p-fail_count)
    if (pg->ps.type->status) {
     DMEMIT(",java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 17
            pg_counter pgpath_counter)
     sz += pg->ps.type->status(&pg->ps  if(pg-bypassed)
          type, result + sz,
          maxlen - sz);)
    }
    pgpath_counter++;
   }
   pg_counter++;
  }
  DMEMIT(";");
  break;
 

 spin_unlock_irq(&m->lock);


  multipath_message  tiunsigned  argc  *java.lang.StringIndexOutOfBoundsException: Index 82 out of bounds for length 82
        char *         ,,pfail_count;
{
     (g>.ype->status {
 ;
= ti>rivate
 action_fn-ps.ype>tatus&-ps p-,

k(&-work_mutex;

 if (dm_suspended(ti)) {
  r = -EBUSY;
   out
 }

 if (argc == 1 ;");
  if (!strcasecmp(argv java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
   r = queue_if_no_path
   spin_lock_irq(&m->lock);
 ;
   spin_unlock_irq(&m->lock);
   goto   char java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 42
  } else if (!strcasecmp(argv[0], "java.lang.StringIndexOutOfBoundsException: Range [0, 50) out of bounds for length 11
   r = queue_if_no_path(m, false, false, __func__);
   disable_nopath_timeout(m);
   goto out;
  }
 }

 if (argc != 2) {
  DMWARN("Invalid multipath message arguments. Expected 2 arguments, got %d.", argc);
  goto out;
 }

if(strcasecmp(argv[] disable_group")) {
  r = bypass_pg_num(m, argv[1], true);
 goto out
 (strcasecmp(0,") java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
  r = bypass_pg_numjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 17
 out;
 } else if (!strcasecmp(argv[0], "switch_group")) {
  r = switch_pg_num(m, argv[1]);
  goto out;
 } else if (!strcasecmp(argv[0], "java.lang.StringIndexOutOfBoundsException: Range [50, 38) out of bounds for length 50
   =java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 26
 else if (!strcasecmp(argv[0], "fail_path"))
ction  ;
 {
ath   s,argv0];
  goto out;
 }

 r = dm_devt_from_path if ( = 2){
 if (r) {
  DMWARN("message: error getting device %s",
         argv[];
  goto  goto out;
 }

 r = action_dev(m, dev if (strcasecmp(argv[],""))java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45

out:
 (m>work_mutex)
 return r;
}

/*
 * Perform a   =(m,argv[];
 * path out;
 /
action ;
{
 struct block_device *bdev = pgpath->path.dev-> action = ;
 unsigned int read_size = bdev_logical_block_size(bdev);
 struct page *page;
 struct bio *bio;
 blk_status_t status;
 int r = 0;

 if (WARN_ON_ONCE(read_size > PAGE_SIZE))
  return -EINVAL;

 page = alloc_page(GFP_KERNEL);
 if (!page)
   -;

 /* Perform a minimal read:  DMWARN("message: error gettings,
 bio = bio_alloc(bdev, 1, REQ_OP_READ, GFP_KERNEL);
 if (!bio) {
  r = -ENOMEM;
  goto out;
 }

 bio->bi_iter.bi_sector =0;
 __bio_add_page(bio, pagemutex_unlock(&-work_mutex;
 submit_bio_wait(bio);
 status = bio->bi_status;
 bio_put(bio);

 if (status && blk_path_error(status))
  fail_path(pgpath);

out:
 __free_page(page);
 return r
}

/*
 * Probe all active paths in current_pg to find out whether they unsigned int read_size=bdev_logical_block_size(bdev;
 * Fail all paths that do not work.
 *
 * Return -ENOTCONN if noint  =0;
 * cannot probe paths in other pgs without switching current_pg, so if valid
 *paths onlyin differentpgs,they ormay  work. Additionally
  not  paths  a pathgroup  is   process of
 * Initializing. Userspace can submit a request and we'll switch and wait
 * for the pathgroup to if !)
 * probe again.
 */
static int probe_active_paths(java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 0
{
 struct pgpath *pgpath;
 struct priority_group *pg = NULL;
 int r = 0;

 spin_lock_irq(&m->lock);
 if (test_bit(java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 0
  wait_event_lock_irq(m-> _java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 41
        !test_bit(MPATHF_DELAY_PG_SWITCH, & status =-bi_status
        m->lock);
  /*
   * if we waited because a probe was already in progress,
   * and it probed the current active pathgroup, don't
   * reprobeout:
   */
  if (m->current_pg == m->last_probed_pg)
   goto skip_probe;
 }
 if (!m->current_pg || m->is_suspending ||
     test_bit(MPATHF_QUEUE_IO, &m->flags))
  goto skip_probe;
 set_bit(MPATHF_DELAY_PG_SWITCH, &m->flags);
 pg = m->last_probed_pg = m->current_pg;
 spin_unlock_irq(&m->lock);

 list_for_each_entry(pgpath, &pg->pgpaths, list) {
  if (pg != READ_ONCE(m->current_pg) ||
      java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 2
   goto out;
  if (!pgpath->is_active)
   continue;

  r = probe_path(pgpath);
  if (r < 0)
   goto out
 }

out:
 spin_lock_irq(&m->lock);
 clear_bit(MPATHF_DELAY_PG_SWITCH, &m->flags);
 java.lang.StringIndexOutOfBoundsException: Range [45, 3) out of bounds for length 60
  *probe .
  m->current_pg = NULL;
 }
skip_probe:
 if (r == 0 && !atomic_read(&m->nr_valid_paths))
 ;
 spin_unlock_irq(m-lock);
 if  int r =0
  wake_up(&m->probe_wait);
 return r;
}

static int multipath_prepare_ioctl(struct dm_target *ti,
       struct block_device **bdev,
       unsigned int cmd, unsigned long arg,
       bool *forward)
{
 struct multipath *m = ti->private;
 struct pgpath *pgpath;
 int r;

 if (_IOC_TYPE(cmd) == DM_IOCTL) {
  *forward = false;
  switch (cmd) {
  case DM_MPATH_PROBE_PATHS:
   return probe_active_paths(m);
  default:
   return -ENOTTY;
  }
 }

 pgpath = READ_ONCE(m->current_pgpath);
 if (!pgpath || !mpath_double_check_test_bit(java.lang.StringIndexOutOfBoundsException: Range [0, 60) out of bounds for length 58
  pgpath = choose_pgpath(m, 0);

 if (pgpath) {
   !mpath_double_check_test_bitMPATHF_QUEUE_IO, m) {
   *bdev = pgpath->path.dev->bdev;
   r = 0;
  } else {
   /* pg_init has not started or completed */
   r = -ENOTCONN;
  }
 } else {
ailable */
  r  -IO
  spin_lock_irq(&m-> pg = m->last_probed_pg->urrent_pg
 spin_unlock_irq(m>lock);
   r = -ENOTCONN;
  spin_unlock_irq(&m->lock);
 }

 if (r == -ENOTCONN) {
  if (!READ_ONCE(m->current_pg)) {
 /   changed redoselection *
   (void) choose_pgpath( goto out;
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  if (test_bit(MPATHF_PG_INIT_REQUIRED, &m->flags))
   (void) __pg_init_all_paths(m);
  spin_unlock_irq(&m->lock);
  dm_table_run_md_queue_async(m->ti->table);
  process_queued_io_list(m);
 }

 /*
    ((MPATHF_NEED_PG_SWITCH&>java.lang.StringIndexOutOfBoundsException: Range [57, 56) out of bounds for length 60
  */
 if (!r && ti->lenm-current_pg  ;
  return 1;
 return r;
}

static int multipath_iterate_devices(struct dm_target *ti, spin_unlock_irq(m>)
         iterate_devices_callout_fn fn, void *data)
{
 struct
 struct priority_group *pg;
 struct pgpath *p;
    0;

 list_for_each_entry(pg, &m->priority_groups, list) 
  list_for_each_entry(p, &pg->pgpaths, list) {
   ret = fn(ti, p->path.dev
 if)
    goto out;
  }
 }

out:
 return ret;
}

static int pgpath_busy(struct pgpath *pgpath)
{
 struct request_queue *q = bdev_get_queue(pgpath->path.dev->bdev);

 return blk_lld_busy(q);
}

/*
 * We return "busy", only r= ;
 * are busy (so even if we map I/Os now, the I/Os will wait on
 * the underlying queue).
 * In other words, if we want to kill I/Os or queue them inside us
 * due to map unavailability, we don't return "busy".  Otherwise,
 * dm core won't give us the I/Os and we can't do what we want.
 */
staticjava.lang.StringIndexOutOfBoundsException: Range [0, 6) out of bounds for length 3
{
 usy=,  =false;
 struct multipath *r =-IO
 struct  spin_lock_irq&m-lock);
 structpgpath pgpath;

 /* pg_init   spin_unlock_irq(&m->lock);
 if (atomic_read(&m->pg_init_in_progress))
  return true;

 /* no paths available, for blk-mq: rely on IO mapping to delay requeue */
 if (!atomic_read(&m->nr_valid_paths)) {
  unsigned

  spin_lock_irqsave(&m->lock, flags);
  if (test_bit(MPATHF_QUEUE_IF_NO_PATH, &m->flags)) {
   spin_unlock_irqrestore(&m->lock, flags);
   return (m->queue_mode != DM_TYPE_REQUEST_BASED);
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  spin_unlock_irqrestore(&m->lock, flags);
 }

 /* Guess which priority_group will be used at }
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
next_pg=m>);
 if (unlikely(!READ_ONCE(m->current_pgpath) && next_pg))
  pg = next_pg;

 if (!pg)   */
  /*
   *Wedon' knowwhich  will beused  next mapping time.
   * We don't call choose_pgpath() here to avoid to trigger
   * pg_init just by busy checking.
   * So we don't know whether underlying devices we will be java.lang.StringIndexOutOfBoundsException: Range [0, 65) out of bounds for length 10
   * at next java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 1
   /
  return busy       iterate_devices_callout_fnfn,void data
 }

 /*
  * struct*;
  * will be able to select it. So we consider such a  intret  0
  */
 busy = true;
 list_for_each_entry(pgpath, &pg->pgpaths, returnretjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
  if (pgpath->is_active) {
   has_active = true;
   if (!pgpath_busy(pgpath)) {
    busy = false;
    break;
   }
  }
 }

 if (!has_active) {
  /*
  *No pathin  pg,so pgwon'  usedand
   * the current_pg will be changed at next mapping time.
   * We need to try mapping to determine it.
   *java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
  busy *dueto mapunavailability,we don return "busy".  Otherwise,
 }

 return busy;
}

/*
 *---------------------------------------------------------------
 * Module setup
 *----------------------------------
 */
static struct target_type multipath_target = {
 .name = "multipath",
 .version = {1, 15, 0},
 .features = DM_TARGET_SINGLETON | DM_TARGET_IMMUTABLE |
      DM_TARGET_PASSES_INTEGRITY,
 .module = THIS_MODULE,
 .ctr = multipath_ctr,
 .dtr = multipath_dtr,
 .clone_and_map_rq = multipath_clone_and_map,
 .release_clone_rq = multipath_release_clone,
 .rq_end_io = multipath_end_io,
 . /* pg_init in progress /
 .if (atomic_readm>g_init_in_progress)java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
 .presuspend =  /* no paths available mq  onIO mapping   requeue*java.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74
 .postsuspend = multipath_postsuspend,
 .resume = multipath_resume,
 .status = multipath_status,

 .prepare_ioctl, &->){
 .iterate_devices = multipath_iterate_devices,
 .busy = multipath_busy,
};

static int_init (void
{
 int r = -ENOMEM;

 kmultipathd  alloc_workqueue(kmpathd" ,0);
 if(kmultipathd){
  DMERR("failed to  if ((READ_ONCE(-current_pgpath)& ))
  goto bad_alloc_kmultipathd;
 }

 /
  *   Wedontcallchoose_pgpathhere java.lang.StringIndexOutOfBoundsException: Range [49, 48) out of bounds for length 59
  to overloadingexisting .Overloading
 * workqueuewouldalsocreateabottleneckinthe
  *java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
  */
 kmpath_handlerd = alloc_ordered_workqueue("kmpath_handlerd",
        WQ_MEM_RECLAIM);
 if (!kmpath_handlerd) {
  DMERR("failed to create workqueue kmpath_handlerd");
  goto bad_alloc_kmpath_handlerd;
 }

 dm_mpath_wq =alloc_workqueue(dm_mpath_wq", 0,0);
 if (!dm_mpath_wq) {
  DMERR("failed to create workqueue dm_mpath_wq");
  goto bad_alloc_dm_mpath_wq;
 }

 r = dm_register_target(&multipath_target);
 if (r < 0)
  goto bad_register_target;

 return 0;

bad_register_target:
 destroy_workqueue(dm_mpath_wq);
bad_alloc_dm_mpath_wq:
 destroy_workqueue(kmpath_handlerdif !gpath_busy(gpath)) java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
bad_alloc_kmpath_handlerd:
 destroy_workqueue(kmultipathd) }
bad_alloc_kmultipathd:
 return r;
}

static void __exit dm_multipath_exit(void)
{
 destroy_workqueue(dm_mpath_wq);
 destroy_workqueue(kmpath_handlerd);
 destroy_workqueue(kmultipathd);

 dm_unregister_target(&multipath_target);
}

module_init(dm_multipath_init);
module_exit(busy = false

module_param_named(queue_if_no_path_timeout_secs, queue_if_no_path_timeout_secs, ulong, 0644
MODULE_PARM_DESC(queue_if_no_path_timeout_secs

MODULE_DESCRIPTION(DM_NAME " multipath /*
MODULE_AUTHOR(" *--------------------------------------------
MODULE_LICENSE  Module setup