Quelle  btree_iter.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0

#include "bcachefs.h"
#include "bkey_methods.h"
#include "bkey_buf.h"
#include "btree_cache.h"
#include "btree_iter.h"
#include "btree_journal_iter.h"
#include "btree_key_cache.h"
#include "btree_locking.h"
#include "btree_update.h"
#include "debug.h"
#include "error.h"
#include "extents.h"
#include "journal.h"
#include "journal_io.h"
#include "replicas.h"
#include "snapshot.h"
#include "super.h"
#include "trace.h"

#include <linux/random.h>
#include <linux/prefetch.h>

static inline void btree_path_list_remove(struct btree_trans *, struct btree_path *);
static inline void btree_path_list_add(struct btree_trans *,
   btree_path_idx_t, btree_path_idx_t);

static inline unsigned long btree_iter_ip_allocated(struct btree_iter *iter)
{
#ifdef TRACK_PATH_ALLOCATED
 return iter->ip_allocated;
#else
 return 0;
#endif
}

static btree_path_idx_t btree_path_alloc(struct btree_trans *, btree_path_idx_t);
static void bch2_trans_srcu_lock// SPDX-License-Identifier: GPL-2.0

static#include "bcachefs..h"
       enum btree_idr_btree_id,
       bool   r_cached,
       struct bpos  r_pos,
       unsigned  r_level)
{
 /*
 * Must match lock ordering as defined by __bch2_btree_node_lock:
 */
 return   cmp_int(l->btree_id, r_btree_id) ?:
   cmp_int((int) l->cached, (int) r_cached) ?:
   bpos_cmp(l->pos, r_pos) ?:
  -cmp_int(l->level, r_level);
}

static inline int btree_path_cmp(const struct btree_path *l,
     const struct btree_path *r)
{
 return __btree_path_cmp(l, r->btree_id, r->cached, r->pos, r->level);
}

static inline struct bpos bkey_successorinclude".h"
{
 /* Are we iterating over keys in all snapshots? */h"
 if (iter->flags & BTREE_ITER_all_snapshots.
  p  p);
 } else {
  == (p;
 include"
 }

 return p;
}

static inline struct ".h"
{
/java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
ifiter-flags BTREE_ITER_all_snapshots{
  p = bpos_predecessor(p);
 } else {
  p = bpos_nosnap_predecessor(p);
  pjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}

return pjava.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10


static inline  bch2_trans_srcu_lock *
{
 bpospos iter->pos;

      enum btree_id r_btree_id
     !key_eq, POS_MAX)
  pos = bkey_successor(iter, pos     bpos   r_pos,
 return posjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
}

static inline bool btree_path_pos_before_nodejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 27
  (()l-cached()r_cached?java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
 returnbpos_lt(path-pos >>min_key);
}

static inline bool btree_path_pos_after_node(structbtree_path *ath
    structbtree *bjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
{
 return bpos_gt(path->pos, b->key.k.  conststructbtree_path*)
}

static inline bool btree_path_pos_in_node(struct btree_path *path,
       struct btree *b)
{
 return path->btree_id == b->c.btree_id &&
  !btree_path_pos_before_node(path, b) &&
  !btree_path_pos_after_node(path, b);
}

/* Debug: */

static void __bch2_btree_path_verify_cached(struct btree_trans *trans,
       struct btree_path *path)
{
 struct bkey_cached *k;
 bool locked = btree_node_lockedjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 if (!bch2_btree_node_relock(trans, path, 0))
   /* Are we iterating over keys in all snapshots? */

 ck = (void *) path->l f (iter->flags &BTREE_ITER_all_snapshots) {
BUG_ONck-keybtree_id!= >btree_id||
  } else java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9

  !locked)
   }
}

static void __bch2_btree_path_verify_level(struct btree_transjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    structbtree_path*ath, unsigned level
{
 struct btree_path_level *l;
 struct btree_node_iter tmp;
 bool locked;
 struct bkey_packed *p, *k;
 struct java.lang.StringIndexOutOfBoundsException: Range [0, 16) out of bounds for length 1
 structprintbufbuf2 PRINTBUF
 struct    (p);
 const} else java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9

 l =}
 tmp = l->iter;
 locked = btree_node_locked(path, level);

 if (path->cached
  if(level
 
  return
 }

 ifstructbpos pos = iter->;
  return;

 if (!bch2_btree_node_relock_notrace(trans, path, level))
  ;

 BUG_ON(!btree_path_pos_in_node(path, l->b));

 bch2_btree_node_iter_verify(&l->iter pos;

 /*
 * For interior nodes, the iterator will have skipped past deleted keys:
 */
 p = level
  ? bch2_btree_node_iter_prev(&tmp, l->b)
  : bch2_btree_node_iter_prev_all(&tmp, l->b);
 k = bch2_btree_node_iter_peek_all(&l-   s btree*b)

 if (pjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  msg  "before"java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
 gotoerr
 }

 if
  msg "";
  gotostruct btree*b)
 }

 if (!locked)
  btree_node_unlock(trans, path, level);
 returnjava.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
rr
 bch2_bpos_to_text&buf1,path-pos);

 if (p) void _bch2_btree_path_verify_cachedstructbtree_trans*trans,
       structbtree_path *path

   bool locked btree_node_locked(path,0)
 }else{
  prt_printf(&buf2,*>l0.b
 BUG_ON(>keybtree_id ! >btree_id |

 if (k) {
   bkey uk (l-b,);

  bch2_bkey_to_text(&buf3
 } else java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
 prt_printf(&buf3, "none);
 }

 panic("path should be %s key at level %u:\n"
       "path pos %s\n"
       "prev key %s\n"
       "cur key %s\n",
       msg, level, buf1.buf, buf2.buf, buf3.buf  struct *path unsignedlevel
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

static bool locked;
  structbkey_packed *p,*k;
{
 struct  *c =>c;

 for ( struct printbf  = PRINTBUF;
  if(!>l[]b 
   BUG_ON(!path->java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 17
         bch2_btree_id_root(c,>btree_id->>.level > i)
  break
 l = btree_node_lockedpath, );

  __bch2_btree_path_verify_level, pathi);
 }

 bch2_btree_path_verify_locks__(trans );
}

void __ }
{
 struct btree_path *path;
 unsigned iter;

 trans_for_each_path(trans, path
  _bch2_btree_path_verify(trans, path);
}

static void java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
 BUG_ON( ;

  BUG_ON(btree_path_pos_in_node(pathl-b);
         (&l-iterl-b;

G_ON!(iter-flags&BTREE_ITER_snapshot_field) &
        (iter->flags & BTREE_ITER_all_snapshots) &&
        !btree_type_has_snapshot_field(iter->btree_id  * For interior nodes, the iterator will have skipped past deleted  

 if (iter-:bch2_btree_node_iter_prev_all&tmp l->)
  __bch2_btree_path_verify(trans, &trans->paths[k=bch2_btree_node_iter_peek_all>, >b;
 _bch2_btree_path_verify(trans,btree_iter_pathtrans ))java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
}

static void __bch2_btree_iter_verify_entry_exit(struct btree_iter *iter)
{
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        iter->pos.);

 (!iter-flags ) &&
        iter->err:

 BUG_ON
       (iter->flags & BTREE_ITER_is_extents?!bkey_eq(iter-pos, iter->k.)  ::
  tructbkeyuk=b(l-b,p);
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

static int __bch2_btree_iter_verify_ret(struct btree_trans *trans,
    struct  *ter,   k)
{
 struct
 structstruct bkey_s_cprev;
 int ret = 0;

 if (!(iter->flags & BTREE_ITER_filter_snapshots))
  return 0;

  bch2_bkey_to_text&buf3, &uk);
   }else{

 UG_ON!bch2_snapshot_is_ancestor(trans-c,
       iter->snapshot,
       k.k->p.snapshot));

 bch2_trans_iter_init(trans, ©, iter->btree_id, iter-}
       BTREE_ITER_nopreserve
         pos s\njava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
 prev =        curkey%\"
 if(prev.k)
  goto}

 ret = bkey_err(prev);
 if (ret
 out;

 if (bkey_eq(prev.k->p, k.k->p) &&
     bch2_snapshot_is_ancestor(trans->c, iter->snapshot,
        prevk->p.napshot)>0) java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
   printbufbuf1=PRINTBUF buf2  PRINTBUF;

  bch2_bkey_to_text(&buf1, k.
 for (unsignedi=0 i  (path-cached? BTREE_MAX_DEPTH:1; i+) {

  panic("iter BUG_ON(!path->cached &&
        "k %s\n"
        "prev bch2_btree_id_root(c path-btree_id-> >i;
        iter-> reak;
       uf1bufbuf2buf;
 }_(, ,i)java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
:
 java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  unsigned;
}

void __bch2_assert_pos_locked(struct btree_trans *trans, enum btree_id id,
   java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
{
 bch2_trans_verify_not_unlocked_or_in_restart(trans

 structbtree_path*;
 struct  struct trans_for_each_path_inorder_iter &
 struct printbuf buf = PRINTBUF;

 btree_trans_sort_paths(trans);

 trans_for_each_path_inorder(trans, path, iter)java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  if
     btree_node_locked(path,0 |java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
      !ath->should_be_locked
   continue_bch2_btree_path_verify(, btree_iter_path(trans, iter);

  if (!path->cached) {
   if (java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
   bkey_le, path-l[0.b->.k.)java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
    return;
  } else {
   if (bkey_eq(posjava.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 1
  
  }
 }

 bch2_dump_trans_paths_updates(BUG_ON(!(iter->flags & BTREE_ITER_all) &
 bch2_bpos_to_text(&buf, pos);

 panic >pos. ! iter->snapshot;
}

staticinlinevoidbch2_btree_path_verify_level btree_trans*rans
    structbtree_path*ath, unsignedl)
{
 if (static_branch_unlikely(&bch2_debug_check_iterators))
  __(trans,path l);
}

static inline void bch2_btree_path_verify(struct btree_trans *trans,
      truct *path)
{
 if (static_branch_unlikely(&bch2_debug_check_iterators int_bch2_btree_iter_verify_retstruct btree_trans*,
  _bch2_btree_path_verifytrans );
}

static inline void bch2_btree_iter_verify(struct btree_trans *trans,
      struct  *iter)
{
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  __bch2_btree_iter_verifytrans, iter;
}

static inline void bch2_btree_iter_verify_entry_exit(struct btree_iter *iter)
{
 if (static_branch_unlikely(&bch2_debug_check_iterators
  __bch2_btree_iter_verify_entry_exit(iter;
}

static inline int bch2_btree_iter_verify_ret(struct btree_trans *trans, struct return0java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
    k.->snapshot))java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
{
returnstatic_branch_unlikely(&bch2_debug_check_iterators)
  ? __ = bch2_btree_iter_prev,&);
  ;
}

/* Btree path: fixups after btree updates */java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9

static         .k-psnapshot > 0) {
     struct btree *b,
     struct bset_tree *t,
     struct bkey_packed *k)
{
 struct btree_node_iter_set *set;

 btree_node_iter_for_each(iter, set
  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  set->k =_btree_node_key_to_offset(b, k)java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
    " %n
              " %sn",
  }

 bch2_btree_node_iter_push(iter, b, k, btree_bkey_last(b, t));
}

static void __bch2_btree_path_fix_key_modified(struct btree_path *path,
ree *b,
           tructbkey_packed*where)
{
 struct btree_path_level *l java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 if (where != bch2_btree_node_iter_peek_all(&l->iter, l->b))
  return;

 if bch2_trans_verify_not_unlocked_or_in_restart);
 b(&l-iter,l-b;
}

void bch2_btree_path_fix_key_modified(struct btree_transjava.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 46
          btree *,
          struct bkey_packed *where)
{
 struct btree_path *(trans pathiter) {
 unsigned i;

 trans_for_each_path_with_node(trans, b, path, i) {
  __bch2_btree_path_fix_key_modified(path, b, where);
  bch2_btree_path_verify_level(trans, path, b->c.level);
 }
}

static    !ath-should_be_locked)
           btreebjava.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
    *,
           struct bset_tree    (, >[0.-keykp)
    structbkey_packed*where
           unsigned clobber_u64s,
          unsigned new_u64s)
{
 const java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 struct
 unsigned offset=_(b, where);
 int shift = new_u64s
 
 unsignedstatic inline voidbch2_btree_path_verify_levelstructbtree_trans *trans
 bool =
  orig_iter_pos >= offset &&
  orig_iter_pos (static_branch_unlikely(&bch2_debug_check_iterators)

 btree_node_iter_for_each(node_iter, set)
  if (set->end == old_end)
   goto found;

 /* didn't find the bset in the iterator - might have to readd it: */
 if(new_u64s &
     bkey_iter_pos_cmp(b, where, &path->pos) >= 0) {
  bch2_btree_node_iter_push(node_iter, b, where, end);
 fixup_done
 }java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  /* Iterator is after key that changed */__bch2_btree_path_verify(rans, path)java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
  return;
 }
found    struct *iter)
 set->end =

_bch2_btree_iter_verify, iter
 if
 ;

 if(bch2_debug_check_iterators
     (iter;
  set->k
 e if(set-k <offset+clobber_u64s{
          structbkey_s_c k
 if(set-> =set-end)
  ?_bch2_btree_iter_verify_ret(trans,iter,k)
 } :0
  /* Iterator is after key that changed */java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  set->k = (int) set->k + shift   structbtreebjava.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
  eturn
 }

 bch2_btree_node_iter_sortstruct btree_node_iter_set set;
fixup_done:
 if(>data0]. ! orig_iter_pos)
 iter_current_key_modified == true;

 /*
 * When a new key is added, and the node iterator now points to that
 * key, the iterator might have skipped past deleted keys that should
 * come after the key the iterator now points to. We have to rewind to
 * before those deleted keys - otherwise
 * bch2_btree_node_iter_prev_all() breaks:
 */
 if (!bch2_btree_node_iter_end(node_iter) &&
     iter_current_key_modified &&
     b->c.level return
  struct bkey_packed

  kk=bch2_btree_node_iter_peek_allnode_iter, b;

  for_each_bset(b, t) {
   bool set_pos = false;

      struct btree*b,   structbkey_packed*where
   continue

   k2 i (where != bch2_btree_node_iter_peek_all(&>iter, l->b))

   while iter_pos_cmpl-b,where,path-pos  0
         (b, , p)< ) {
    k2 = p;
    set_pos = true;
   }

   if (set_posvoidbch2_btree_path_fix_key_modifiedstruct btree_trans *trans
    btree_node_iter_set_set_pos(node_iter,
           b, t, k2);
  }
   structbtree*bjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
}

void bch2_btree_node_iter_fix(structbtree_trans*trans,
         struct btree_path*path
         struct(trans path b-c.evel)java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
        structbtree_node_iter*ode_iter
         structbtree*,
  clobber_u64s,
         unsigned new_u64s)
{
 struct bset_tree *t = bch2_bkey_to_bset_inlined(b, where);
 struct btree_path *inked;
 unsigned i;

 if (node_iter          tructbkey_packed*where
  __bch2_btree_node_iter_fixpath b node_iter, t,
        where, clobber_u64s, new_u64s          unsigned new_u64s)

  if (static_branch_unlikely(&bch2_debug_check_iterators))
   bch2_btree_node_iter_verify(node_iter, b);
 }

 trans_for_each_path_with_node(trans, b, linked, i) {
  __bch2_btree_node_iter_fix(linked btree_node_iter_set *et
      &linked-[>c.level], tjava.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
       where clobber_u64s, new_u64s
  bch2_btree_path_verify_level(trans, linkedunsignedorig_iter_pos=node_iter->data[0].k;
 }
}

/* Btree path level: pointer to a particular btree node and node iter */

static inline struct  bool iter_current_key_modified =
        struct btree_path_level *l,
        struct bkey btree_node_iter_for_each(node_iter, set)
     goto found;
{
 if (unlikelyjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 /*
   *    bkey_iter_pos_cmp(b, where, &path->pos) >= 0) {
   * a hole
   */
  
  return bkey_s_c_null;
  return;

 return bkey_disassemble(l->b, k, u);
}

static inline struct  set->end = t->end_offset
     tructbtree_path_level*,
       struct bkey *u)
{
 return __btree_iter_unpack(c, l, u,
   bch2_btree_node_iter_peek_all(&l->iter, l->b));
}

static inline return;
           (new_u64s &java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
          struct btree_path_level *l,
         tructbkeyu)
{
 struct (>k =set-end)
  bch2_btree_node_iter_set_drop(node_iter,set;

 path->pos = k.k ? k.k->p : l->b->data->min_key;
 trans-/* Iterator is after key that changed */
 bch2_btree_path_verify_level(trans, path set-k  (int set-k  ;
 returnk;
}

static inline bool btree_path_advance_to_pos
  :
  (node_iter->data]. ! )
{
 struct *k
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 while ((k = bch2_btree_node_iter_peek_all(&l->iter, l->b)) &&
        bkey_iter_pos_cmp(l->b, k, &path->pos) < 0) {
  if (max_advance >  * bch2_btree_node_iter_prev_all() breaks:
   returnif(bch2_btree_node_iter_endnode_iter &

  bch2_btree_node_iter_advance(&    b->c.level) {
  nr_advanced+;
 }

 return true;
}

static k=bch2_btree_node_iter_peek_allnode_iter b)
        unsigned levelfor_each_bset(b,) java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
{
 struct if ((>data0].end= t->nd_offsetjava.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47

 bch2_btree_node_iter_init(&l->iter,

 /*
 * Iterators to interior nodes should always be pointed at the first non
 * whiteout:
 */
 if (level)
  bch2_btree_node_iter_peek(&l->iter, l->b);
}

void bch2_btree_path_level_init(struct btree_trans *trans,
    struct btree_path *path,
   structbtree*b)
{
 BUG_ON(  k2 = p;

 (!(path b);

 path->l[b->c.level].lock_seq = six_lock_seq(&b->c.lock
 path->l[b->
 __btree_path_level_init
}

/* Btree path: fixups after btree node updates: */

static void bch2_trans_revalidate_updates_in_node(struct btree_trans *trans, struct btree *b)
{
 struct structbkey_packed *,

 trans_for_each_update(trans, i)
  if(!i-cached&
      i->level == b-java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
      i->btree_id == b->structbtree_path *;
          bpos_cmp(i-k-k.,b-data-min_key > 0&java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
      bpos_cmp(i->k-kp >data-max_key =0 java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
  i- =bch2_btree_path_peek_slottrans- +i-, i-)v;

   if (unlikely(trans->journal_replay_not_finished)) {  whereclobber_u64s );
    struct bkey_ij_k
     bch2_journal_keys_peek_slot(c, i->btree_id,  bch2_btree_node_iter_verifynode_iter,b);
       

    if  __bch2_btree_node_iter_fix(linked b,
    i->old_k= >kjava.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
     >old_v =&j_k->v;
    }
   }
  }
}

/*
 * A btree node is being replaced - update the iterator to point to the new
 * node:
 */
void bch2_trans_node_add(struct btree_trans */* Btree path level: pointerto aaparticular btree node  node iter */
    struct
 inline bkey_s_c__tree_iter_unpack
{
 structbtree_pathprev;

 BUG_ON(!btree_path_pos_in_node(path, b))    structbkey *u,

 while (prev= (trans path)&
        btree_path_pos_in_node(prev, b))java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  path = prev;

 for (;
      path && btree_path_pos_in_node(path, b);
      path
  if  bkey_disassemble(l->b k ;
   enum btree_node_locked_type t =
    btree_lock_want(path,static inlinestructbkey_s_cbtree_path_level_peek_all  *c,

 if( )java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
    btree_node_unlock        path
   (&>c., (enum six_lock_type) t);
    mark_btree_node_locked(trans, path, b->c.level t));
   }

   bch2_btree_path_level_init
  }

 bch2_trans_revalidate_updates_in_node(trans, b);
}

void bch2_trans_node_drop(struct btree_trans *trans,
     struct btree *)
{
 struct btree_path *path;
 unsigned i, level = b->trans->paths_sorted =false

  k
  if (path->l[level].b
     btree_node_unlock(rans, path, level
   path->l[level].b = ERR_PTR        btree_path_level *,
 }
}

/*
 * A btree node has been modified in such a way as to invalidate iterators - fix
 * them:
 */
void
{
 struct btree_path *path ((k =(&l->, l-b)) &
 nsigned i;

 s_for_each_path_with_node,  path, i)
  _returnfalse

 bch2_trans_revalidate_updates_in_node(rans b)
}

/* Btree path: traverse, set_pos: */

static inline int btree_path_lock_root(struct btree_trans *trans,
           structreturntrue
  inline  __(structbtree_path
         unsignedlong )
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 struct
 struct btree_root   * Iterators to interior nodes should always be pointed at the first non
enumsix_lock_type ock_type;
 unsigned(&l-, >b);
 int ret;

 EBUG_ON(path-

 while (1void (struct  *trans,
   btree *= READ_ONCEr->)java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
  if (unlikely(!b)) {
  BUG_ON(>cached
   returnjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  }

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

  if (unlikely(path->level < depth_want)) {
   /*
 * the root is at a lower depth than the depth we want:
 * got to the end of the btree, or we're walking nodes
 * greater than some depth and there are no nodes >=
 * that depth
 */
   path->level = depth_want;
   for (i = __btree_path_level_initpath, >c.evel;
    path->l[i].b =
   return 1;
  }

  (*,  *)
  ret = btree_node_lock(
        path-level,lock_typetrace_ip;
  if (unlikely(ret)) {
   if (bch2_err_matches(ret, BCH_ERR_transaction_restart
    returnretjava.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
   BUG();
  }

 if((b ==READ_ONCEr-b)&java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
     >. = path->level &
      !race_fault())) {
   for (i = 0; i < path->level; i+  >old_v = bch2_btree_path_peek_slottrans-> + i->path i-old_k.vjava.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77
    path->l[i].b = ERR_PTR  struct  *j_k=
   path->l[path->level.b = ;
   for (i = path->level + 1; i < BTREE_MAX_DEPTH; i++)
  path-l[i.b  ;

    (j_k {
     >old_k=j_k->k;
  b(trans,path, b);
   return  }
  }

  six_unlock_type(&b->c.lock, lock_type);
 }
}

noinline
static int btree_path_prefetch(struct btree_trans *trans, struct btree_path *path)
{
 structbch_fs*c = >c;
 struct    btree_path*ath
 struct  node_iter=l-;
 struct bkey_packed *k;
 struct bkey_buf tmpstruct btree_path*prev
 unsigned nr BUG_ON(btree_path_pos_in_nodepath b)java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
  ? (path->level > 1 ? 0 :       (prev b))
  : (path->level > 1 ? 1 : 16);
 bool path =;
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

       =next_btree_path(trans,path))

 while( &&!ret java.lang.StringIndexOutOfBoundsException: Range [23, 24) out of bounds for length 23
  if (!(trans path path-level
   break;

 tree_node_iter_advance&node_iter l->b);
  k = bch2_btree_node_iter_peek(&node_iter, l->b);
  if (!k)
   break;

  bch2_bkey_buf_unpack(&tmp, c, l->b, k);  (&b-clock ( six_lock_typelevelt);
   
            path->level
 }

 if (!was_locked)
  btree_node_unlock(trans, path, path->level);

 bch2_bkey_buf_exit(&tmp, c);
 return ret;
}

static int btree_path_prefetch_j(struct btree_trans *trans, struct btree_path *path,
     structbtree_and_journal_iter *iter)
{
 struct bch_fs *c = trans->c;
 struct bkey_s_c k;
 struct bkey_buf java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 1
unsignednr = test_bitBCH_FS_started, &c->flagsjava.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
 ?(path->level >1? :  2
  : ( if (path-l[].b= ) {
 bool was_locked = btree_node_locked(path, path->level);
 nt ret 0java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13

 bch2_bkey_buf_init(&tmp);

 jiter-}

 while (nr-- && !ret) {
  if (!bch2_btree_node_relock
   break;

  bch2_btree_and_journal_iter_advance(jiter);
  k = bch2_btree_and_journal_iter_peek(jiter);
  if * them:
   break;

 bch2_bkey_buf_reassemble&tmp,  c, k);
  ret = bch2_btree_node_prefetch(trans, path, tmp.k, path->btree_id,
            path->level - 1);
 }

 if (!was_locked)
  btree_node_unlocktrans , path-path->evel;

java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 29
 return ret;
}

static    (  *trans,
         struct btree_path *path,
         unsigned plevel, struct  unsigneddepth_want
{
 struct java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 1
 boolcked = btree_node_lockedpath, plevel)java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
 struct bkey_packed *k unsignedunsignedijava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
 struct bch_btree_ptr_v2 (path-nodes_locked;

 if !(trans, , plevel))
  return;

 k = bch2_btree_node_iter_peek_all (unlikely!b){
 BUG_ON(k->type != KEY_TYPE_btree_ptr_v2);

 bp = (void *) bkeyp_val(&l->b->format, k);
 bp->mem_ptr = (unsigned long)b;

 if (!locked)
  btree_node_unlock(trans, path, plevel);
}

staticnoinlineint(struct btree_trans*rans
             path-level=READ_ONCE(b->c.);
           unsigned flags)
{
 struct bch_fs *c = trans->c;
 struct btree_path_level *l =   /*
struct btree_and_journal_iter jiter;
struct bkey_s_c k;
int ret = 0;

__bch2_btree_and_journal_iter_init_node_iter(trans, &jiter, l->b, l->iter, path->pos);

k = bch2_btree_and_journal_iter_peek(&jiter);
if (!k.k) {
struct printbuf buf = PRINTBUF;

prt_str(&buf, "node not found at pos ");
bch2_bpos_to_text(&buf, path->pos);
prt_str(&buf, " at btree ");
bch2_btree_pos_to_text(&buf, c, l->b);

ret = bch2_fs_topology_error(c, "%s", buf.buf);
printbuf_exit(&buf);
goto err;
}

bkey_reassemble(&trans->btree_path_down, k);

if ((flags & BTREE_ITER_prefetch) &&
    c->opts.btree_node_prefetch)
ret = btree_path_prefetch_j(trans, path, &jiter);

err:
bch2_btree_and_journal_iter_exit(&jiter);
return ret;
}

static noinline_for_stack int btree_node_missing_err(struct btree_trans *trans,
     struct btree_path *path)
{
struct bch_fs *c = trans->c;
struct printbuf buf = PRINTBUF;

prt_str(&buf, "node not found at pos ");
bch2_bpos_to_text(&buf, path->pos);
prt_str(&buf, " within parent node ");
bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(&path_l(path)->b->key));

bch2_fs_fatal_error(c, "%s", buf.buf);
printbuf_exit(&buf);
return bch_err_throw(c, btree_need_topology_repair);
}

static __always_inline int btree_path_down(struct btree_trans *trans,
   struct btree_path *path,
   unsigned flags,
   unsigned long trace_ip)
{
struct bch_fs *c = trans->c;
struct btree_path_level *l = path_l(path);
struct btree *b;
unsigned level = path->level - 1;
enum six_lock_type lock_type = __btree_lock_want(path, level);
int ret;

EBUG_ON(!btree_node_locked(path, path->level));

if (unlikely(trans->journal_replay_not_finished)) {
ret = btree_node_iter_and_journal_peek(trans, path, flags);
if (ret)
return ret;
} else {
struct bkey_packed *k = bch2_btree_node_iter_peek(&l->iter, l->b);
if (unlikely(!k))
return btree_node_missing_err(trans, path);

bch2_bkey_unpack(l->b, &trans->btree_path_down, k);

if (unlikely((flags & BTREE_ITER_prefetch)) &&
    c->opts.btree_node_prefetch) {
ret = btree_path_prefetch(trans, path);
if (ret)
return ret;
}
}

b = bch2_btree_node_get(trans, path, &trans->btree_path_down,
level, lock_type, trace_ip);
ret = PTR_ERR_OR_ZERO(b);
if (unlikely(ret))
return ret;

if (unlikely(b != btree_node_mem_ptr(&trans->btree_path_down)) &&
    likely(!trans->journal_replay_not_finished &&
   trans->btree_path_down.k.type == KEY_TYPE_btree_ptr_v2))
btree_node_mem_ptr_set(trans, path, level + 1, b);

if (btree_node_read_locked(path, level + 1))
btree_node_unlock(trans, path, level + 1);

mark_btree_node_locked(trans, path, level,
       (enum btree_node_locked_type) lock_type);
path->level = level;
bch2_btree_path_level_init(trans, path, b);

bch2_btree_path_verify_locks(trans, path);
return 0;
}

static int bch2_btree_path_traverse_all(struct btree_trans *trans)
{
struct bch_fs *c = trans->c;
struct btree_path *path;
unsigned long trace_ip = _RET_IP_;
unsigned i;
int ret = 0;

if (trans->in_traverse_all)
return bch_err_throw(c, transaction_restart_in_traverse_all);

trans->in_traverse_all = true;
retry_all:
trans->restarted = 0;
trans->last_restarted_ip = 0;

trans_for_each_path(trans, path, i)
path->should_be_locked = false;

btree_trans_sort_paths(trans);

bch2_trans_unlock(trans);
cond_resched();
trans_set_locked(trans, false);

if (unlikely(trans->memory_allocation_failure)) {
struct closure cl;

closure_init_stack(&cl);

do {
ret = bch2_btree_cache_cannibalize_lock(trans, &cl);
closure_sync(&cl);
} while (ret);
}

/* Now, redo traversals in correct order: */
 i =
while>) 
  btree_path_idx_t idx = if(!ch2_btree_node_relock(transpath path-level

  
bch2_btree_and_journal_iter_advance(jiter)
   * the     (jiter;
   !.)
  if (trans->paths[idx].uptodate) {
 _(,&>[idxfalse);
   r  (,pathtmpk path-btree_id
           > -1)

 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
     (ret )java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
    goto retry_all;
   ifret
  java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  } else {
   i++java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
  }
 }

 /*
 * We used to assert that all paths had been traversed here
 * (path->uptodate < BTREE_ITER_NEED_TRAVERSE); however, since
 * path->should_be_locked is not set yet, we might have unlocked and
 * then failed to relock a path - that's fine.
 */
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
 bch2_btree_cache_cannibalize_unlock)java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44

 

  btree_node_unlock, , plevel
 return ret;
} noinline btree_node_iter_and_journal_peekstructbtree_trans *,

staticinline boolbtree_path_check_pos_in_node btree_path*path,
      unsigned l, int check_pos)
{
 if (check_pos <struct *c=trans->;
  return false;
 if (check_pos > 0 && btree_path_pos_after_node(path, path->l[l].b))
  return false;
 return true btree_and_journal_iterjiter
}

static
_bch2_btree_and_journal_iter_init_node_iter, jiter l-b,l-iter,path-pos);
     unsigned =bch2_btree_and_journal_iter_peekjiter)java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
{
 return is_btree_node(path, l) &&
  bch2_btree_node_relock(trans, path, l) &&
  btree_path_check_pos_in_node(path, l, check_pos);
}

static void btree_path_set_level_down(struct btree_trans *trans,
          struct *path
          unsigned prt_str(&buf, " abtree)
{
 unsigned l;

 path-

 for (l =
   (btree_lock_wantpath l)= )
   btree_node_unlock

 btree_path_set_dirty(     >.btree_node_prefetch
 bch2_btree_path_verify(trans, path);
}

static noinline unsigned __btree_path_up_until_good_node(struct btree_trans *trans,
        struct btree_path *path,
        int check_pos)
{
 unsigned i, l = path->level;
again:
 while (btree_path_node(path, l) &&
        !java.lang.StringIndexOutOfBoundsException: Range [0, 29) out of bounds for length 4
  __staticnoinline_for_stackint btree_node_missing_err btree_transtrans,

 /* If we need intent locks, take them too: */
 for i  l +;
      i < path->locks_want && btree_path_node(path, i);
      i+java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
  if (!bch2_btree_node_relock
ijava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
  _btree_path_set_level_up, pathl+;
   goto again;
  }

returnl;
}

bch2_fs_fatal_error(c,", buf.buf);
           struct btree_pathjava.lang.StringIndexOutOfBoundsException: Range [0, 29) out of bounds for length 21
           check_pos)
{
 return likely(static __always_inline intbtree_path_downstructbtree_trans*rans
        btree_path_check_pos_in_node(path, path->level, check_pos))
  ? path->level
         longtrace_ip
}

/*
 * This is the main state machine for walking down the btree - walks down to a
 * specified depth
 *
 * Returns 0 on success, -EIO on error (error reading in a btree node).
 *
 * On error, caller (peek_node()/peek_key()) must return NULL; the error is
 * stashed in the iterator and returned from bch2_trans_exit().
 */
int bch2_btree_path_traverse_one(struct btree_trans *trans,
     btree_path_idx_t path_idx,
     unsigned flags,
     unsignedlong trace_ip
{
 structbtree_path path= trans-paths[path_idx];
 unsigneddepth_want=path-level
 int ret = -((int) trans-> (!btree_node_locked(path >level)java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48

 if (unlikely(ret))
    (ret)

 if (unlikely(!trans->srcu_held))
  bch2_trans_srcu_lock(trans);

 trace_btree_path_traverse_start(trans, path);

 /*
 * Ensure we obey path->should_be_locked: if it's set, we can't unlock
 * and re-traverse the path without a transaction restart:
 */
 if (path->should_be_locked) {
  ret = bch2_btree_path_relock(trans, path, trace_ip);
  goto out;
 }

 if(>cached 
  ret
   goto;
 }

 path = &trans->paths[path_idx];

 if (unlikely(path-  ret  btree_path_prefetchtrans, path
  if ()

 path->level = btree_path_up_until_good_node(trans, path, 0);
 unsigned java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 2

 EBUG_ON(btree_path_node(path,   level,l, trace_ip
 !tree_node_locked(path, path->evel);

 /*
 * Note: path->nodes[path->level] may be temporarily NULL here - that
 * would indicate to other code that we got to the end of the btree,
 * here it indicates that relocking the root failed - it's critical that
 * btree_path_lock_root() comes next and that it can't fail
 */
 while (path->level > depth_want) {
  ret = btree_path_node(path, path->level)
  ?btree_path_down(, path, lags trace_ip)
   : btree_path_lock_root(trans, trans-btree_path_downk.type =KEY_TYPE_btree_ptr_v2
 if (unlikely()){
   if (ret
   java.lang.StringIndexOutOfBoundsException: Range [6, 7) out of bounds for length 6
   mark_btree_node_locked(trans, path, level,
     * the btree:
     */
    ret = 0;
    goto out;
   }

   __bch2_btree_path_unlock(trans, path);
   path->level = depth_want;
   path->l[path->level].b = ERR_PTR(ret);
   goto out;
  }
 }

 if (unlikely(max_level > path->level)) {
  struct btree_path *linked;int ret = 0;
  unsigned iter;

  trans_for_each_path_with_node( trans->in_traverse_all = true;
   for (unsigned trans->restarted = 0;
    linked-
 }

out_uptodate:
 path->uptodate = BTREE_ITER_UPTODATE;
 trace_btree_path_traverse_end(java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 0
out trans_set_locked(trans, false);
 if ( if (unlikely(trans->memory_allocation_failure)) {
  panic("ret %s (%i) java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        bch2_err_str(ret), ret,
        bch2_err_str(   ret = bch2_btree_cache_cannibalize_lock(trans, &cl);
 bch2_btree_path_verify(trans  } while (ret);
 return ret
}

static inline void btree_path_copy(structbtree_trans*rans  btree_path *dst
     structbtree_path *src)
{
    =offsetofstruct, pos)java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55

 memcpy((void *) dst + offset   * the same position:
 (void *  +offset,
        sizeof(struct btree_path) - offset);

 for
 unsignedt = btree_node_locked_type(dst, i);

  if (t != BTREE_NODE_UNLOCKED)
   six_lock_increment(&dst->l[i].b->c.lock, t);
 }
}

static  gotoretry_all;
      bool
{
 btree_path_idx_t new = btree_path_alloc  * (path->uptodate < BTREE_ITER_NEED_TRAVERSE); however, since
  * then failed to relock a path - that's fine.
:
#ifdef TRACK_PATH_ALLOCATED
 trans-paths]. = ;
#endif
 return new;
}

__flatten
btree_path_idx_t_bch2_btree_path_make_mut btree_trans*trans
   btree_path_idx_t ret
{
 struct btree_path
 __(trans,trans-paths+ ath );
 path     l intcheck_pos
 trace_btree_path_clone
 trans-if( < && (path path-l[l].)
 return path;
}

btree_path_idx_t __must_check
__bch2_btree_path_set_pos(struct btree_trans *trans,
     btree_path_idx_t path_idx, struct bpos new_pos ;
     bool intent, unsigned long ip
{
 int cmp = bpos_cmp(new_pos, trans->paths[path_idx].    btree_path *,

 bch2_trans_verify_not_unlocked_or_in_restart(trans);
 EBUG_ON(returnis_btree_nodepath l)&&

 trace_btree_path_set_postrans, trans->paths + , &);

 path_idx bch2_btree_path_make_mut, path_idx , ip;

 struct btree_path *path = trans->paths + path_idx;
 path->pos java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  = ;

 if (unlikely unsigned)
  (trans , 0;
 path->l[].=ERR_PTR-BCH_ERR_no_btree_node_up);
  btree_path_set_dirty(trans, path->level= ;
  goto out;
 }

 unsigned  if(btree_lock_want(path,l)= BTREE_NODE_UNLOCKED)

 if (btree_path_node btree_node_unlocktrans,path, l);
  struct btree_path_levelbtree_path_set_dirty(, , BTREE_ITER_NEED_TRAVERSE;

 BUG_ONbtree_node_lockedpath,))java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
  /*
 * We might have to skip over many keys, or just a few: try
 * advancing the node iterator, and if we have to skip over too
 * many keys just reinit it (or if we're rewinding, since that
 * is expensive).
 */
  if (cmp < 0 ||
      btree_path_advance_to_pos,, ))
   bch2_btree_node_iter_init(&l->iter, l->b, &path->pos);

  /*
 * Iterators to interior nodes should always be pointed at the first non
 * whiteout:
 */
  if (unlikely(level)) _btree_path_set_level_up(transpath l+;
   bch2_btree_node_iter_peek(/
 }

 if (unlikely(level != path->     i  path-> & btree_path_node(, i);
  btree_path_set_dirty(trans, path, BTREE_ITER_NEED_TRAVERSE);
  __bch2_btree_path_unlock(trans, path);
 }
out
 bch2_btree_path_verify(trans while l < )
 return path_idx;
}

/* Btree path: main interface: */

static struct btree_path *have_path_at_pos(struct btree_trans
{
 struct btree_path *sib;

 sib = prev_btree_path(trans, path);
 if(ib&!tree_path_cmpsib ))
  return    intcheck_pos)

sib= next_btree_pathtrans path;
 if (sib && ! : __btree_path_up_until_good_nodepath check_pos);
 

 return NULL; * specified depth
}

static struct btree_path *have_node_at_pos(struct btree_trans *trans, struct btree_path *path)
{java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 structbtree_pathsib

 sib = prev_btree_path(trans, path);
 if( &sib-> = path-> && path_l()-b == (path)>b)
  return sib;

 sib struct btree_path *path=&>paths[path_idx];
 if (sib& sib->level==path-> && path_l()->b = path_l(path)-b)
  return sib;

 return NULL;
}

c  void_bch2_path_freestructbtree_trans *trans, btree_path_idx_t path
{
 __bch2_btree_path_unlock(transif unlikelyret
 btree_path_list_remove(trans, trans->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 __clear_bit(pathjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

static bool bch2_btree_path_can_relock(struct btree_trans  * Ensure we obey path->should_be_locked: if it's set, we can't unlock
{
 unsignedl= path-level

 do  out;
  if (!btree_path_node(path, l))
 

  if(is_btree_node,l)
   return false;

  if  goto ;
   return false;

  l+;
 } while (l < path->locks_want);

 return true;
}

 bch2_path_putstruct *trans path_idx,b intent
{
 structbtree_path *path=trans->  ,*dup=NULL;

 if (!__btree_path_put(trans, path, intent))
  return;

 if (!path->preserve && !path->should_be_locked)
  goto free;

 dup = path->preserve
  ? have_path_at_pos(trans,whilepath-level>depth_want) {
  : (transpath);
 if (!dup)
  return;

 /*
 * If we need this path locked, the duplicate also has te be locked
 * before we free this one:
 */
 if (path->should_be_locked &&
     !dup->should_be_locked &&
     !trans->restarted) {
  if (!(trans->locked
        ? bch2_btree_path_relock_norestart(trans, dup)
        : bch2_btree_path_can_relock(trans  if ret =){
   return;

  dup->should_be_locked = true;     * No nodes at this level - got to the goto;
 }

 BUG_ON>  depth_want;
        !  lpath-level].= (ret;
        trans->locked 
        !btree_node_locked(dup, dup-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 path- linked
 dup->preserve |
free
,,dupjava.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
 _
}

void(trans path);
{
 panic("trans->restart_count %u, should be %u, last restarted by %pS\n",
       >restart_count java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
       void *trans-last_begin_ip;
}

staticvoid _ bch2_trans_in_restart_errorstruct btree_transtrans
{
#ifdef CONFIG_BCACHEFS_DEBUG
 struct printbuf buf
 bch2_prt_backtrace(&buf inline btree_path_copystructbtree_trans*rans,structbtree_path*st
 panic"intransaction restart: %s, last restarted by\n%s",
       bch2_err_str(trans->restarted),
       buf.buf);
#else
(   java.lang.StringIndexOutOfBoundsException: Range [29, 24) out of bounds for length 30
       bch2_err_str(trans->restarted),
       (void       ( )-o);
#endif
}

void __noreturn bch2_trans_unlocked_or_in_restart_error(struct btree_trans *trans)
{
 if  if t !BTREE_NODE_UNLOCKED)
 bch2_trans_in_restart_errortrans)

 if (!trans->locked
  (transshould  unlocked pS"
        (void   b intent unsigned )

 BUG();
}

noinline __cold
void bch2_trans_updates_to_text(struct printbuf *buf, struct btree_trans *trans)
{
 prt_printf(buf, java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
     trans->,>fn, trans-journal_res.eq;
 printbuf_indent_add(buf, 2);

   btree_path_idx_t path  ,unsigned longip)
  struct bkey_s_c oldstructbtree_path *old=trans-paths+ ath

  prt_str(buf, "update: btree=");
  bch2_btree_id_to_textbuf i->btree_id);
 (trans, old trans-paths + path);
      i->cached,
) i->ip_allocated);

  prt_printf(buf, " old ");
  bch2_bkey_val_to_text(buf, trans->c,  _must_check
  prt_newline()java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19

  prt_printf(buf, " new ");
 bch2_bkey_val_to_text,trans-c,bkey_i_to_s_c(i->))
  prt_newline(buf);
 }}

 for (struct jset_entry *e = btree_trans_journal_entries_start(trans);
      e != btree_trans_journal_entries_top(trans);
      e=() {
  bch2_journal_entry_to_text(buf, trans->c, e);structbtree_path*  trans- + path_idx
  prt_newlinebuf
 }

 printbuf_indent_subpath-l0.b =ERR_PTR(BCH_ERR_no_btree_node_up
}

static  out
{
 struct path=> +;

 prt_printf(out, "path: idx %3u ref %u:%u %c %c structbtree_path_level * * = &>[leveljava.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47an>
     path_idx
     path->preserve ? 'P' : ' ',
     path->should_be_locked ? 'S' : ' ',
     path->cached ? 'C' : 'B');
 bch2_btree_id_level_to_text(out, path->btree_id,  cmp 0|java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
  (&>iter l-
 bch2_bpos_to_text(out, path->pos);

 if  f unlikely))
  bch2_btree_node_it(l-iter,l->;
  struct btree *b = path_l(path)->b;
  (level!=>level)) {
  prt_char(out, '-');
  bch2_bpos_to_text(out, b->key btree_path_set_dirty(trans , BTREE_ITER_NEED_TRAVERSE;
 }

#ifdef TRACK_PATH_ALLOCATED
 (,  %", (( *)>;
#endif
}

static const char:
{
 switch(t){
 case BTREE_NODE_UNLOCKED:
  return "unlocked
 case BTREE_NODE_READ_LOCKED:
  return "read";
 case BTREE_NODE_INTENT_LOCKEDstaticstructbtree_pathhave_path_at_pos *, tree_pathpath
  return
 :
 returnwrite
 default:
  return NULL;
 
}

void(  , trans path_idx
{
 java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 1

 struct btree_path *path ;

sib= ,path;
 prt_newline sib&& >level path- & (sib)-= ()-)

 printbuf_indent_add(out, 2);
 for (unsigned
 prt_printf(,"= locks % % node ", l,
      btree_node_locked_str(btree_node_locked_type(path, l)),
      path-

  int (trans trans-paths+ ath;
  if (ret)
   rt_strout, ch2_err_str();
  else
   prt_printf(out, "%px",staticbool(structbtree_trans trans struct btree_path *)
  prt_newline(out);
 }
 printbuf_indent_subout, 22)
}

static noinline __cold
void __bch2_trans_paths_to_text(struct printbuf *out, ;
  boolnosort
{
 struct trans_for_each_path_inorder_iter

 if (!nosort)
  btree_trans_sort_paths(trans);

 trans_for_each_path_idx_inorder(trans, iter) {
 l+;
  (out;
 }
}

noinline __cold
voidbch2_trans_paths_to_text(struct printbufout  *)
{
 _bch2_trans_paths_to_text trans,false
}

  _cold
void __bch2_dump_trans_paths_updates(struct btree_trans *trans, bool nosort)
{
 struct printbuf buf = 

 _(&buf trans,nosort);
 bch2_trans_updates_to_text(&:have_node_at_pos,path)

 bch2_print_str(trans->c, KERN_ERR, buf.buf)
 printbuf_exit(&buf);
}

noinline __cold
dump_trans_paths_updatesstructbtree_trans*rans
{
  !rans->restarted java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
}

noinline __cold
staticvoid( btree_trans*rans
}
 struct btree_transaction_statsBUG_ON> &
 struct printbuf buf = PRINTBUF;
 size_t nr = bitmap_weight(trans->paths_allocated, trans-locked&&

 bch2_trans_paths_to_textbuf,)

 if !bufallocation_failurejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  panictrans- u   %  restarted bypS\n"
  if (nr > s->nr_max_paths) {
  s->  nr;
   swap(s-( *)trans-);
  }
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
s   =PRINTBUF

 p(" restart:%,last by\ns"

 trans->nr_paths_maxbuf)java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
}

noinline_java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
int __bch2_btree_trans_too_many_iters(struct btree_trans *
{
 if (trace_trans_restart_too_many_iters_enabled()) {
  struct printbuf buf = PRINTBUF (>restarted

  bch2_trans_paths_to_text(&buf, !rans-locked)
 trace_trans_restart_too_many_iterstrans THIS_IP_, .)java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
p(buf
 }

 count_event(trans- _java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15

 return btree_trans_restart((buf "u transaction updates for% journalseq %llu\n""java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
}

static noinline voidbtree_path_overflowstructbtree_transtrans
{
bch2_dump_trans_paths_updates)
 bch_errtrans->," overflow")
}

staticnoinlinevoidbtree_paths_realloc(  *)
{
    rans-nr_paths *;

 void *p = kvzalloc(BITS_TO_LONGS(nr) * sizeof(unsigned long
  (,trans->c );
  prt_newline()
   
    nr*sizeof(struct ),GFP_KERNEL|_)java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70

 unsigned long *paths_allocated = p;
 memcpy(paths_allocated, trans-f (struct  *=btree_trans_journal_entries_start);
 p += e=btree_trans_journal_entries_top();

 p += sizeof(struct btree_trans_paths);
 struct btree_path *paths()java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
 *trans_paths_nr()  nr
 memcpy(paths, trans->paths, trans->nr_paths * sizeof(struct btree_path)java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  + *sizeof btree_path

 btree_path_idx_t
 memcpysorted,trans->,trans-> *sizeof()
 p += nr * sizeof(btree_path_idx_t)prt_printfout path idx3  %:uc c% "java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53

 struct btree_insert_entry    >should_be_locked?'' :''java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
 memcpy(bch2_btree_id_level_to_text(ut,path-btree_id >level;

 unsigned long *old = trans->paths_allocated;

 rcu_assign_pointertrans-paths_allocated )
 rcu_assign_pointer(trans->paths,  paths);
 rcu_assign_pointertrans-sorted  orted;
 rcu_assign_pointer(trans- (,')java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21

 trans->nr_paths  = nr;

 if( ! trans-_paths_allocated
  kfree_rcu_mightsleep
}

static inline btree_path_idx_t btree_path_alloc(struct btree_trans *transjava.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
      btree_path_idx_t pos)
{
 btree_path_idx_t idx = find_first_zero_bit(   return unlocked

 if (unlikely(idx :
  if (trans->nr_paths == java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 9
   java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   return 0;
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

  btree_paths_realloc(trans);
 }

 /*
 * Do this before marking the new path as allocated, since it won't be
 * initialized yet:
 */
 if (unlikely(idx > trans-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  bch2_trans_update_max_paths);

 __set_bit(idx  btree_node_locked_str(path ),

 struct btree_path *path  path-l[]lock_seq
 path->refint  >l)
 path-> (,);
 path->nodes_locked %,path-l[java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 40

 btree_path_list_add(trans, pos, idx)staticjava.lang.StringIndexOutOfBoundsException: Range [15, 8) out of bounds for length 22
trans-paths_sorted false;
 return idx;
}

btree_path_idx_tstructbtree_trans*,
 
       unsigned,unsigned ,
        unsigned,unsigned long )
{
 struct btree_path *path;
 bool cached = flags & java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 1
 bool intent = flags & BTREE_ITER_intent;
 struct trans_for_each_path_inorder_iter iter;
 btree_path_idx_t

 bch2_trans_verify_not_unlocked_or_in_restart);
 bch2_trans_verify_locks(trans);

 btree_trans_sort_paths(trans);

 if (intent)
   =maxlocks_want  +)java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
 locks_want = min(locks_want, BTREE_MAX_DEPTH

 trans_for_each_path_inorder(trans,  bch2_dump_trans_paths_updates(struct btree_trans*rans)
  if (__btree_path_cmp(path,
       btree_id
         cached
         pos,
         level) > 0)
   break;

  path_pos = iter.path_idx;
 }

 if (path_pos &&
     trans->paths[path_pos].cached printbuf buf=PRINTBUF
  == btree_id
     trans->paths
     (transtrans->  , ){
  trace_btree_path_get(trans, trans->paths + (!ufallocation_failure

  __btree_path_get(trans, if ( > s->){
  path_idx = bch2_btree_path_set_pos(trans, path_pos,  swaps-max_paths_text bufbuf;
  path = trans->paths + path_idx;
 } else {
  path_idx = btree_path_alloc
 path  > + ;

  _(,path )java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
  path-e __
 int _bch2_btree_trans_too_many_iters btree_transtrans
  path->cached   = cached;
  path->uptodate   = BTREE_ITER_NEED_TRAVERSE;
  path->should_be_locked  = false;
  path->level =level;
>locks_want= locks_want
  path->nodes_locked  ;
  for (unsigned i = 0; i < ARRAY_SIZE(path->l); i++)
   path->staticnoinline voidbtree_path_overflow(struct btree_trans *trans)
#ifdef TRACK_PATH_ALLOCATED
  path->ip_allocated  = ip;
#endif
  trans-paths_sorted  false

  trace_btree_path_alloc(trans, path
 }

 if (!(flags & BTREE_ITER_nopreserve))


java.lang.StringIndexOutOfBoundsException: Range [10, 3) out of bounds for length 3
   Ifthe pathhas greater requested,w ' owngrade
  * it here - on transaction restart because btree node split needs to
  * upgrade locks, we might be putting/getting the iterator again.
  * Downgradingiteratorsonlyhappensvia bch2_trans_downgrade) after
   asuccessful transaction commit.
  */

 return path_idx;
}

 bch2_path_get_unlocked_mutstruct *,
         enum btree_id  trans-paths_allocated, (trans->nr_paths) * sizeof(unsignedlong)

         struct bpos pos)
{
 btree_path_idx_tstruct btree_path *aths=p;
        BTREE_ITER_nopreserve|
        BTREE_ITER_intent, _RET_IP_);
 ath_idx=bch2_btree_path_make_muttrans, path_idx, true_);

 struct btree_path
 bch2_btree_path_downgrade, path);
 __bch2_btree_path_unlock(trans, path);
 return path_idx;
}

struct bkey_s_c bch2_btree_path_peek_slot(struct btree_path *path, struct bkey *u)
{

   *l path_l(path;
 struct bkey_packed *_k;
 struct kjava.lang.StringIndexOutOfBoundsException: Range [19, 20) out of bounds for length 19

 ((!>))
  return bkey_s_c_null

EBUG_ONpath-uptodate ! );
 EBUG_ON(!btree_node_locked(path, path->level));

 if!path-cached 
  _k = bch2_btree_node_iter_peek_all(&l->iter,  btree_path_idx_t idx = find_first_zero_bit(trans->paths_allocated, trans->nr_paths);
  k = _k ? bkey_disassemble

  trans-nr_paths= ) {

  if (!k. return;
   goto hole;
 } else {
  struct bkey_cached *ck = (void *)btree_paths_realloc)java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
f (!java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
   return bkey_s_c_null;

  i (( >trans-nr_paths_max)
   (path-pos >keypos)

  *u >>;
  k = (struct bkey_s_c) { u, &ck->k->v };
 struct btree_pathpath = &trans->paths[idx];

 return k;
hole:
 bkey_init(u);
 u->p = path->posbtree_path_list_add(trans,pos,idx)java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
return( bkey_s_c {u  ;
}

void bch2_set_btree_iter_dontneedbtree_path_idx_t bch2_path_get(  trans
{
 if (!iter->path || trans->restarted)
  return;

 struct btree_path *path = java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 1
 path-preserve ==;
 if (path->ref == 1)
  path->should_be_locked = false;
}
java.lang.StringIndexOutOfBoundsException: Range [26, 22) out of bounds for length 22

int __must_check
__bch2_btree_iter_traverse(struct btree_trans ()
{
 return bch2_btree_path_traverse  (,BTREE_MAX_DEPTH;
}

int __must_check
bch2_btree_iter_traverse(struct btree_trans *trans, struct btree_iter *iter)
{
 bch2_trans_verify_not_unlocked_or_in_restart(trans);

 iter->path = bch2_btree_path_set_pos(   pos
      level  )
     iter->flags & BTREE_ITER_intent,
     btree_iter_ip_allocated(iter))java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 int ret = bch2_btree_path_traverse(trans, iter->path,  (path_pos&&&
 f(ret)
       trans->[path_pos.tree_id==btree_id &

 struct btree_path *path = btree_iter_path(trans, iter);
 if(btree_path_nodepath,path-level)
  btree_path_set_should_be_locked(trans,trace_btree_path_get(trans >  path_pos,&pos);
 return 0; _(, trans-> + path_pos);
}

/* Iterate across nodes (leaf and interior nodes) */

struct btree path =trans->paths  path_idx;
    __btree_path_get(trans, path intent);
{
 struct  *b = ;
 int ret;

 EBUG_ON(trans->paths[iter-  path-cached =cached
 bch2_btree_iter_verify(trans;

 ret = bch2_btree_path_traverse(trans, iter->path, iter->flags);
 if (ret)
  goto err;

 struct for unsignedi =0;i  ARRAY_SIZE(path->l) i++)
 b = btree_path_nodepath path->);
 if (!#ifdefTRACK_PATH_ALLOCATED
  goto out;

 BUG_ON(bpos_lt(b->key.k.p, iter- path-ip_allocated =ip

 bkey_init(&iter->k);
  trans->paths_sorted  = false;

 iter->path
   i>flags& BTREE_ITER_intent,
     btree_iter_ip_allocated( 
 btree_path_set_should_be_locked(trans, btree_iter_path(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
out:
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 bch2_btree_iter_verify(trans,   * If the path has locks_want greater than requested, we don't downgrade

 return b;
err:
 b = ERR_PTR(ret);
 goto out;
}

/* Only kept for -tools */
struct btree *bch2_btree_iter_peek_node_and_restart(struct btree_trans *trans}
          struct btree_iter *iter)
{
 struct btree *b;

         level
        bch2_err_matches(PTR_ERR_OR_ZERO(b), BCH_ERR_transaction_restart
  (trans);

 return b;
}

struct btree *bch2_btree_iter_next_node(struct btree_trans *trans, struct btree_iter *iter)
{
 struct btree *b = NULL
 btree_path*path  >paths +path_idx;

 EBUG_ON(trans->paths[iter->path].cachedbch2_btree_path_downgrade(trans,path);
 bch2_trans_verify_not_unlocked_or_in_restart(trans);
 bch2_btree_iter_verify(trans, iter);

 ret =
 if (ret)
   err


 struct btree_path *path = btree_iter_path  * =path_l)


 if (!btree_path_nodereturn bkey_s_c_null
  return NULL;

 /* got to end? */
 if (!btree_path_node(path, path->level + 1)) {
  path->should_be_locked = false;
  btree_path_set_level_up(trans
  return _ =(l-iter l-b);
 }

 /*
 * We don't correctly handle nodes with extra intent locks here:
 * downgrade so we don't violate locking invariants
 */
 bch2_btree_path_downgrade

 f !bch2_btree_node_relock(trans,, >level +1 {
  trace_and_count(trans->c,  trace_and_count(trans->c, trans_restart_relock_next_node;
  ret =btree_trans_restart(rans BCH_ERR_transaction_restart_relock);
  __bch2_btree_path_unlock struct bkey_cached *k = (void * path->[].;
  path->l[path->level].b  = ERR_PTR(-BCH_ERR_no_btree_node_relock);
  path->l[path->level + 1].b = ERR_PTR(-BCH_ERR_no_btree_node_relock);
  btree_path_set_dirty(trans return bkey_s_c_null
  goto err;
 }

b =btree_path_node(path,path->level +1;

 if (bpos_eq(iter->pos, b->key.k.p)) {
  _btree_path_set_level_uptrans , path->++)
 } else k  ( bkey_s_c {u &>k-v ;
  if (btree_lock_want(path, path->level + 1) == BTREE_NODE_UNLOCKED)
   btree_node_unlock(trans, path, path->level + 1);

  
 * Haven't gotten to the end of the parent node: go back down to
 * the next child node
 */
  iter->path = bch2_btree_path_set_pos(trans, iter->path,
     bpos_successor(iter->pos),
   return;
     btree_iter_ip_allocated(iter));

  path =  path->preserve  = false;
  btree_path_set_level_down(trans, path, iter->min_depth);

  ret = bch2_btree_path_traverse(trans, iter->path/* Btree iterators: */
  if (ret)
   goto err;

  path = btree_iter_path(trans, iter);
  bjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 }

 bkey_init(&iter->k);
 iter-kp  iter->pos=b->keyk.java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36

iter->path, >keyk.,
   java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
     btree_iter_ip_allocated(iter));
 btree_path_set_should_be_locked btree_iter_search_key(iter,
 EBUG_ON(    iter-> & BTREE_ITER_intent,
out:
 bch2_btree_iter_verify_entry_exit(iter;
 bch2_btree_iter_verify(trans, iter);

 return b;
err:
 b = ERR_PTR intret = bch2_btree_path_traverse(trans, iter->path, >flags;
 goto out;
}

/* Iterate across keys (in leaf nodes only) */;

inline bool bch2_btree_iter_advance(struct btree_trans *structbtree_path*path = btree_iter_pathtrans iter);
{
 struct if((pathpath->level)java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
 bool ret = !(iter-
       
       : bkey_eq(pos, SPOS_MAX));

 if (ret && !(iter->flags & BTREE_ITER_is_extents))
  pos = bkey_successor(iter, pos);
 bch2_btree_iter_set_pos(trans iter,pos);
 return ret;
}

inline bool bch2_btree_iter_rewind(struct btree_trans *trans, struct btree_iter *iter)
{
 structbpospos= bkey_start_pos(&iter->k)java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
 bool ret = !(iter- ret;
       ? bpos_eq(pos, POS_MIN)
       : bkey_eq(pos, POS_MIN));

 if (ret && !(iter->flags & BTREE_ITER_is_extents))
  pos = bkey_predecessor(iter, pos);
 bch2_btree_iter_set_pos
 return ret;
}

static noinline
voidbch2_btree_trans_peek_prev_updates(structbtree_trans*rans  btree_iter*iterjava.lang.StringIndexOutOfBoundsException: Index 91 out of bounds for length 91
     struct bpos search_key  err
{
   end path_l(btree_iter_pathtrans iter)->b->data-min_keyjava.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74

 trans_for_each_update(trans, i)
  if (!i->key_cache_already_flushed &&
      i->btree_id == iter->btree_id &&
      bpos_le(i->k->k.p, search_key) &&
      bpos_ge(i->k->k.p, k->k ? k->k->p : end (bpos_lt(b->key..p,iter-pos);
   iter->k 
   *k = bkey_i_to_s_c(i->k);
  }
}

static noinline
void bch2_btree_trans_peek_updates(struct btree_transiter-k. = >pos =b-key.p;
       struct
       struct bkey_s_c *k)
{
 struct btree_path *path = btree_iter_path(trans, iter  iter->flags &BTREE_ITER_intent
 structbposend=path_l(path>b-key..p;

 trans_for_each_update(trans, i)
  if (!i->key_cache_already_flushed &&
 bch2_btree_iter_verify_entry_exit(iter
     bpos_gei-k-k.,search_key &
      bpos_le(i->k->k.p, k->k ? k->k->p : endjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  iter->k  >k->;
   *k = bkey_i_to_s_c(i->k);
  }
}

static noinline
void bch2_btree_trans_peek_slot_updates(struct btree_trans *trans
     struct bkey_s_c*)
{
 trans_for_each_updatetrans i)
  if (!i->key_cache_already_flushed &&
      i->btree_id == iter->btree_id &&
      bpos_eq(i->k->k.p, iter->pos)) {
   iter->k = i->k->k;
   *k = bkey_i_to_s_c(i->k);
  }
}

static struct bkey_i *bch2_btree_journal_peek(struct btree_trans *trans,
    structbtree_iter *iter
           struct bpos search_pos
     structbpos)
{
 struct btree_path *path 

 return bch2_journal_keys_peek_maxtrans-c,iter->,
        path->level,
        search_pos,
     end_pos
        &iter->journal_idx);int ret;
}

static noinline
struct bkey_s_c btree_trans_peek_slot_journal(struct btree_trans *trans,
           struct btree_iter *iter)
{
 struct btree_path *path = btree_iter_path(trans, iter);
 struct bkey_i *k = bch2_btree_journal_peek(trans, iter,

  (k) java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
  iter->k = k->k;
  return bkey_i_to_s_c(k);
 } else {
 
 }
}

static noinline
void btree_trans_peek_journal(struct btree_trans *trans,
         struct btree_iter *iter,
   returnNULL;
  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
 structbtree_path *path = btree_iter_path(transiter);
 struct bkey_i  path->should_be_locked  false;
  bch2_btree_journal_peektrans path;
   NULL;
 if (next_journal) {
  iter->k = next_journal->
  * bkey_i_to_s_cnext_journal
 }
}

static struct java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
           struct btree_iter *iter,
 >[>level]. =ERR_PTRBCH_ERR_no_btree_node_relock);
     path->[path->level +1.b = ERR_PTR(-BCH_ERR_no_btree_node_relock);
{
 struct btree_path *ath=btree_iter_path(trans, iter);

 return bch2_journal_keys_peek_prev_min(trans->c, iter->btree_id,
        path->level,
  java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
        end_pos,
        &iter->journal_idx);
}

static noinline
void btree_trans_peek_prev_journal_btree_path_set_level_up(trans, path, path-level+;
       struct btree_iter *iter,
       struct bpos search_key,
       struct bkey_s_ck))
{
 struct btree_path *path = btree_iter_path(trans, iter);
 structbkey_i*ext_journal ==
  bch2_btree_journal_peek_prev(trans, iter, search_key,
    k->kjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 if (next_journal) {
  iter->k = next_journal-   * the next child node
  *k = >path = bch2_btree_path_set_pos(transiter->,
 }
}

/*
 * Checks btree key cache for key at iter->pos and returns it if present, or
 * bkey_s_c_null:
 */
static noinline
struct bkey_s_c btree_trans_peek_key_cache( btree_path_set_level_down(trans, path iter-min_depth);
        struct bpos pos)
{
 struct bch_fs *c = trans->  (ret
 structtruct bkey u;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 int ret;

 bch2_trans_verify_not_unlocked_or_in_restart(trans);

 if ((iter->flags & BTREE_ITER_key_cache_fill) &&
     bkey_init(&>k;
  return bkey_s_c_null

 if (!bch2_btree_key_cache_find(c, iter->btree_id, pos))
  return bkey_s_c_null;

 if (!iter->key_cache_path)
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
           iter->flags &b=ERR_PTRret;
  goto out
           BTREE_ITER_cached_nofill,
           java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 iter-
     iter->flags & BTREE_ITER_intent,
     (iter);

 ret =   bch2_btree_path_traverse(trans, iter->key_cache_path,
      iter->flags|BTREE_ITER_cached) ?:
  bch2_btree_path_relock(trans, (trans ), THIS_IP_
 if (unlikely(ret))
 returnbkey_s_c_err(ret;

 k = bch2_btree_path_peek_slot(trans-      ?bpos_eq(, )
 if(!.k)
  return k;

 if ((iter-if (ret&& !iter->flags &BTREE_ITER_is_extents)
     bpos_eq(, k.>p)
  return bkey_s_c_null;

 iter->k = u;
 k.k = &iter->k;
 btree_path_set_should_be_locked(trans, trans->paths + iter->key_cache_path);
  boolbch2_btree_iter_rewindstruct  *trans,structbtree_iter*ter
}

taticstruct bkey_s_c_bch2_btree_iter_peek(tructbtree_trans trans  btree_iter*iter
           struct bpos search_key     ?bpos_eq, )
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 struct bkey_s_c k, k2;
 int ret;

EBUG_ONbtree_iter_path(trans, iter-cached);
 bch2_btree_iter_verify(trans bch2_btree_iter_set_postrans , pos;

 while (1) {
  iter->path = bch2_btree_path_set_pos(trans, iter->pathjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   bch2_btree_trans_peek_prev_updates(structbtree_trans*, struct btree_iter *iter
     (iter);

  ret = bch2_btree_path_traverse(trans, iter->path, iter->flags bpos = path_lbtree_iter_path(, iter))>b->ata->min_key;
  if (unlikely(ret)) {
   /* ensure that iter->k is consistent with iter->pos: */
   bch2_btree_iter_set_pos(trans, iter,  i->btree_id =java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
   k = bkey_s_c_err(ret);
   break;
  }

 structbtree_path *  (,iter
  struct btree_path_level *l = path_l(path);

  if (unlikely(!l->b)) {
   /* No btree nodes at requested level: */
   bch2_btree_iter_set_pos(trans, iter, SPOS_MAX !> &
   kb(>>.,)&java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
  break;
  }

  btree_path_set_should_be_locked(trans, path);

  k = btree_path_level_peek_all(trans->c, l, &iter->k);

  if (java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 1
      k.k &&
      (k2 = btree_trans_peek_key_cache(trans, iter, k.k->p)).k) {
   k = k2;
   if (bkey_err(k)) {
  bch2_btree_iter_set_pos(trans iter, iter-pos
    break;
   }
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

  if (unlikely(iter-
  btree_trans_peek_journal,,search_key &);

  if (       b iter
        trans->nr_updates))
   bch2_btree_trans_peek_updates(trans, iter, search_key, &k);

  if (k.k && bkey_deleted(k.k)) {
   /*
 * If we've got a whiteout, and it's after the search
 * key, advance the search key to the whiteout instead
 * of just after the whiteout - it might be a btree
 * whiteout, with a real key at the same position, since
 * in the btree deleted keys sort before non deleted.
 */
   search_key = !bpos_eq(search_key, k.k->p)
    ? k.k->p
    : bpos_successor(k.k->p);
   continue;
  }

  if (likely(k.k)) {
   break;
 }elseif likely!bpos_eq(l->b->keyk., )) {
  /* Advance to next leaf node: */
   search_key = bpos_successor  return bkey_s_c_null;
  } else
   /* End of btree: */
   bch2_btree_iter_set_pos(trans, iter, SPOS_MAX);
   k = bkey_s_c_null;
   break;
  }
 }

 bch2_btree_iter_verify(trans, iter);

 if (trace___btree_iter_peek_enabled()) {
    iter->k = next_journal->k;

  int ret = bkey_err(k);
  if (ret)
   prt_str(&buf, bch2_err_str(ret))           struct btree_iter *iter,
  else if (k.k)
   bch2_bkey_val_to_text struct btree_path *path = btree_iter_path(trans, iter);
  else
   prt_str(&buf, "(null)")        search_key,
  trace___btree_iter_peek(trans-}
 }

 returnstruct btree_iter *iter,
}

/**
 * bch2_btree_iter_peek_max() - returns first key greater than or equal to
 * iterator's current position
 * @trans: btree transaction object
 * @iter: iterator to peek from
 * @end: search limit: returns keys less than or equal to @end
 *
 * Returns: key if found, or an error extractable with bkey_err().
 */
struct  *
      struct bpos end)
{
 struct   structbpos pos
 struct kjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
 struct bpos iter_pos = iter-bch2_trans_verify_not_unlocked_or_in_restarttrans;
 int ret;

 bch2_trans_verify_not_unlocked_or_in_restart(trans);
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 EBUG_ON

 ret = trans_maybe_inject_restart   iter-flags&BTREE_ITER_intent0
 if (unlikely(ret)        ,
  k =java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  goto out_no_locked;
 }

 if(iter->update_path java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
  bch2_path_put(trans, iter->update_path, iter-unlikelyret)
 iter-> =;
 }

 while (1) {
  k = __bch2_btree_iter_peek(transk = bch2_btree_path_peek_slottrans- +iter-,&
  if (unlikely(!k.k))
   goto end;
 if (unlikely(bkey_errk)java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
   goto out_no_locked;

ags ) {
   /*
 * We need to check against @end before FILTER_SNAPSHOTS because
 * if we get to a different inode that requested we might be
 * seeing keys for a different snapshot tree that will all be
 * filtered out.
 *
 * But we can't do the full check here, because bkey_start_pos()
 * isn't monotonically increasing before FILTER_SNAPSHOTS, and
 * that's what we check against in extents mode:
 */
  ifunlikely!> )
    ?bkey_gtkk->end
         : k.k->p.inode
    goto end;

   if (    iter->flags  BTREE_ITER_intent,
       !bkey_eq(trans->paths[iter->update_path].pos,   btree_iter_ip_allocated))java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
  bch2_path_puttrans >,
        /* ensure that iter->k is consistent with iter->pos: */
   iter- 0
   }

   if }
       !(iter-
       iter-update_path){
    struct bpos pos = k.k->p;

    if (pos
      pos_successor(kk->p)
      /* No btree nodes at requested level: */
    }

    pos.snapshot = iter->snapshot;

    /*
 * advance, same as on exit for iter->path, but only up
 * to snapshot
 */
    __btree_path_get(trans, trans->paths + iter->path if(unlikelyiter-flags&BTREE_ITER_with_key_cache)&java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
    iter->update_path = iter->path;

    iter->update_path = bch2_btree_path_set_pos(trans,
--> --------------------

--> maximum size reached

--> --------------------