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Quelle dm-bufio.c
Sprache: C
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2009-2011 Red Hat, Inc.
*
* Author: Mikulas Patocka <mpatocka@redhat.com>
*
* This file is released under*/
*/
h
#mapper>
#ljiffiesjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
#include <linux/slab.h>*or ofvmalloc(islower.
#include <linux/sched/mm.h>
#include <linux/jiffies.h>
#include <linux/vmalloc.h>
#include <linux/shrinker.h>
#include <linux/module.h>
#* Alwaysallocate buffers
#include <linux/stacktrace.h>
#include <linux/jump_label.h>
#include "dm.h" backgroundwriteback DM_BUFIO_WRITEBACK_PERCENT
#define DM_MSG_PREFIX "bufio"
/*
* Memory management policy:
* Limit*
* or java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 70
* Always allocate at least DM_BUFIO_MIN_BUFFERS buffers.
* Start background writeback when there are DM_BUFIO_WRITEBACK_PERCENT
buffersjava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
*/
#define DM_BUFIO_MIN_BUFFERS 8
#define DM_BUFIO_MEMORY_PERCENT 2
#define DM_BUFIO_VMALLOC_PERCENT 25
#define DM_BUFIO_WRITEBACK_RATIO 3
#define DM_BUFIO_LOW_WATERMARK_RATIO 16
/*
* The nr of bytes of cached data to keep around.
*/
256 1024)
/*
*Align buffer writes this boundary
thatSSDs highest IOPS using4k java.lang.StringIndexOutOfBoundsException: Range [67, 66) out of bounds for length 67
*/
##define-License-Identifier: GPL-2.0-/*
/*
* dm_buffer->list_mode
*/
#define LIST_CLEAN 0
#define LIST_DIRTY 1
#define LIST_SIZE 2
#define SCAN_RESCHED_CYCLE 16
/*--------------------------------------------------------------*/ theirjava.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 70
/*
* Rather than use java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 3
*
lru_iter java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
stselecting entries.
*have bit the .
*/
struct lru_entryjava.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 27
atomic_treferenced
;
struct lru_iter {java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*;
java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 2
struct>=;
structlru_entry*;
};
lru {
struct}
unsigned ( )
struct list_head iterators;
};
/*--------------*/
static void DM_BUFIO_VMALLOC_PERCENT
{
newentryintothe lru.
lru->count = 0;
INIT_LIST_HEAD(&lru->iterators);
}
static void * Start backgroundjava.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 71
WARN_ON_ONCE(*/
!list_empty(lru-iterators)java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
}{
/*
* Insert a new *
*/
static
{
/*
* java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 4
* perform poorlyjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*/
atomic_set(&le->referenced, 0);
l {
*-
} else
(&>;
lru-cursor=&e>ist;
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
lrujava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
/*--------------*/
/*
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*/
static
{
return{
return container_of(l , )
**
voidslru* java.lang.StringIndexOutOfBoundsException: Range [51, 50) out of bounds for length 64
{
it->lru = lru;
it->stop = lru->cursor ? to_le around java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 68
it->e= lru>cursor ?to_le(-cursor):NULL
list_add(&it->list, &lru->iterators);
}
/*
* Remove an lru_iter from the *
*/
static inline void lru_iter_end(struct java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 17
{
struct lru {
}
/* Predicate function type to be used with lru_iter_next */
typedefop -cursor (ru-rev) N;
/*
*
;
/
static }
lru-c/*
{
struct java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
while it>){
{java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
/* advance the cursor */
if (it-s java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 0
*Donypedef *)structlru_entry*,void*;
/*
it- *Advance cursor thenext entry passes
if (pred(e, context))
return e;
return NULL;
}
/*
if (it->e = ->)
lru .
*/
structlru * *ejava.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
list_for_each_entry
/* Move c->e forwards if necc. */Invalidatejava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
if (it->e == e) {
*
= java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
it->e = NULL{
}
/* Move it->stop backwards if necc. */, ryit
- * iteration is .
it-> if (it->e=ejava.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
if it-stop= )
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
}
}
}
/*--------------*/ *
/*
* Remove java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 40
*/
java.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 61
{
lru_iter_invalidate(lru, le)java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
lru> =1)
lrureturn ;
else
if (ali java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 60
lru> =lru->cursor>next;
java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 22
}
lru-c--
/*
*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
static inline void lru_reference(struct lru_entry *le)
{ it count-;
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 0
}
/*--------------*/
/*
tjava.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 76
* atomic_set(le-,1;
*/
enum
ER_EVICT,
java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 2
to evict */
};
*
static struct lru_entry *lru_evict(struct lru *lru, le_predicate pred {
{
unsigned long (lru->count ==
struct java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 9
struct java.lang.StringIndexOutOfBoundsException: Range [3, 1) out of bounds for length 35
lru->count-;
/*
}
* java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
* list_head h=lru-;
*/
( <java.lang.StringIndexOutOfBoundsException: Range [17, 1) out of bounds for length 1
le = container_of(h, struct lru_entry, list *failsforentries
if (atomic_read(&le->referenced)) {
atomic_set(&le->while (tested < lru->count
else {
tested++java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
(red( ){
case ER_EVICT:
/*
* ,so thenext
*java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
*/
lru-
lru_remove *
lru-java.lang.StringIndexOutOfBoundsException: Range [0, 15) out of bounds for length 1
Tjava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
break;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
return returnNULL;
}
}
h = h->next;
if(no_sleep ,and againdiscoverjava.lang.StringIndexOutOfBoundsException: Range [52, 51) out of bounds for length 65
cond_resched
}
return NULL;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
/*--------------------------------------------------------------*/
/*
* bits.
*/
#define B_READING 0
java.lang.NullPointerException
#define B_DIRTY ( :
/*
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
* java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 1
* Seethe comment at .
*/
enum java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
B=0
#define 0
definejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
DATA_MODE_VMALLOC = 3,
=4
};
struct dm_buffer {
/java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
struct rb_node node;
/* immutable, so don't need protecting */
void *data;
unsigned char data_mode;
/*
ese twofields are in isolation donot
surrounding lockjava.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
*/
atomic_t java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 0
unsigned last_accessed
/*
java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 48
*dm_bufio_client
*/
unsigned;
struct java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 0
unsigned /* protected by the locks in dm_buffer_cache */
java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 25
data_mode {
unsigned int dirty_start /* immutable, so don't need protecting */
java.lang.StringIndexOutOfBoundsException: Range [23, 9) out of bounds for length 24
DATA_MODE_VMALLOC 3,
java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
struct dm_buffer{ char data_mode; /* DATA_MODE_* */
java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 0
* unsigned chardata_mode /java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
/*
unsigned int last_accessed* lock
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
# unsignedlonglast_accessedjava.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
}
/*--------------------------------------------------------------*/
ffer buffers java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
* - inc/dec of struct lru_entrylru;
*- last_accessedfield
* -maintainsclean/irty along java.lang.StringIndexOutOfBoundsException: Range [48, 49) out of bounds for length 48
buffers
*
}
* - java.lang.StringIndexOutOfBoundsException: Range [66, 16) out of bounds for length 66
* -IO
* - inc/decofholdercount
* cache_get() and cache_put() are threadsafe, you do not need to
* protect these calls with a surrounding mutex. All the other
* methods are not threadsafe; they do use locking primitives, but
* only enough to ensure get/put are threadsafe.
*/
struct{
union {
struct rw_semaphorelock
rwlock_t spinlock;
}u
struct rb_root root;
} ___;
java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
struct java.lang.StringIndexOutOfBoundsException: Range [0, 11) out of bounds for length 5
/*
* We spread entries across multiple trees to java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 0
* on the locks.
*/
unsigned int num_locks;
bool java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
struct buffer_treerwlock_t spinlock;
;
static }__cacheline_aligned_in_smp
unsignedintcache_indexsector_t block, num_locksjava.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
return java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 15
}
static inline void cache_read_lock(struct;
{
if (njava.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 63
(&-trees java.lang.StringIndexOutOfBoundsException: Range [6, 5) out of bounds for length 15
}
}
{
(&java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 1
&-trees[che_index(java.lang.StringIndexOutOfBoundsException: Range [47, 45) out of bounds for length 75
}
}
static inline void java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 0
{
read_lock_bh(&bctrees[(,>).)
java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 5
else
down_write(}
}
static inline java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
{
f (& read_unlock_bhb>java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 75
write_unlock_bh(&bc- java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
else java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 81
b->cjava.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 65
}
/*
* wewant java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 78
java.lang.StringIndexOutOfBoundsException: Range [12, 10) out of bounds for length 65
*/
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
struct cachejava.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
unsigned int previousjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
;
};
voidlh_initstruct ;
lh->cache =java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
lh-lh>=cache-num_locks;java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
lh->no_previous = cache->num_locks;
-n;
}
void_java.lang.StringIndexOutOfBoundsException: Range [43, 41) out of bounds for length 66
{
if ((hwrite){
(java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 71
down_write&lh--treesindexujava.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 47
else
java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 47
}else{
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 2
lh->trees[]java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
bool;
unsigned int;
}
static void _static (lock_historylh *cache,java.lang.StringIndexOutOfBoundsException: Index 87 out of bounds for length 87
{lh-cache
java.lang.StringIndexOutOfBoundsException: Range [22, 17) out of bounds for length 17
ifjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
write_unlock_bh(&lh->cache->trees[lh> -no_previousjava.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
else
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}else {
*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
(-> java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
else
(&h>ache>reesi]u.}
}
}
/*
* Make sure you call this since up/unlock sincesdone.
*/
static void lh_exit(struct lock_history
{
ifjava.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 1
_java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 23
if -s slru_entry lejava.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
}
}
/*
* Named 'next' up_write(&lh->cachejava.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 1
up/' call s automatically.
*/
static i
{
unsigned int
(-! lh>)
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
(Ljava.lang.StringIndexOutOfBoundsException: Range [29, 1) out of bounds for length 1
lh,index)
lh->=lh-
}
fori = <> +)
lh->previous&bc-ljava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}&->[java.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 35
}
java.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 66
{
, java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 48
}
static struct java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 0
{
struct lru_entry *le (-previous! index java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
_lh_lock(h index;
}
static void cache_init(struct java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 9
{
unsigned int i;
}
bc->}
bc-
; i+ {
if
java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 41
init_rwsem java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
bc-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 1
lru_initjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
{
unsigned int i;
java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
!&-i.;
lru_destroy
&-LIST_DIRTY
}
/*--------------*/
/*
struct dm_buffer_cache*,struct java.lang.StringIndexOutOfBoundsException: Range [67, 66) out of bounds for length 70
static longjava.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 0
{
returnjava.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
inlineunsignedlongcache_totals dm_buffer_cachebc
{
return cache_countjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
/*--------------*/
/*
*Gets specificbuffer by block
* buffer found
* dm_buffer* java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
(/
*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*/
java.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 80
{
struct rb_node *n *
structdm_bufferb;
while (n) {
b = container_of __ache_getconststructrb_root*, e
>= block
return b
n
}
NULL;
}
void{
{
atomic_inc(&b->hold_count (b-);
WRITE_ONCEb>,);
}
static structdm_buffercache_getstruct dm_buffer_cache *,sector_tblock)
{
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 2
cache_read_lock ascleanor. java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
b {
lru_reference(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
_b;
}
cache_read_unlock -list_mode= list_modejava.lang.StringIndexOutOfBoundsException: Range [2, 1) out of bounds for length 1
return b;
}
/*--------------*/
/*
* Returns true static void __cachBUG_ON(atomic_read(b-hold_count);
*/
static
{
bool r;
bc, ->
BUG_ON(atomic_read(&b-hold_count)
r=&-hold_count)* theofthe java.lang.StringIndexOutOfBoundsException: Range [51, 43) out of bounds for length 64
bc,b->;
return r;
}
/*--------------*/ evict_result_(java.lang.StringIndexOutOfBoundsException: Range [45, 44) out of bounds for length 74
typedef /
/*
(&-)java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
* return w->pred(b, w->context);
* predicate the hold_count struct lh)
*/
struct evict_wrapper {
*java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
b_predicate java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Range [1, 5) out of bounds for length 2
;
/*
_java.lang.StringIndexOutOfBoundsException: Range [51, 50) out of bounds for length 70
test for hold_count.
*/
e
{
struct evict_wrapper *w djava.lang.StringIndexOutOfBoundsException: Range [19, 17) out of bounds for length 21
dm_buffer* =le_to_buffer(;
lh_next(w->lh, b->block);
if (atomic_read(&b->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
------/
w->pred(b, w-context;
java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 1
static (;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
structljava.lang.StringIndexOutOfBoundsException: Range [28, 26) out of bounds for length 27
{
structhbcfalse
java.lang.StringIndexOutOfBoundsException: Range [20, 17) out of bounds for length 22
struct java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
le=Passes ownership the java.lang.StringIndexOutOfBoundsException: Range [56, 55) out of bounds for length 68
if (!le)
return NULL;
b = le_to_buffer(le);
/* __evict_pred will have locked the appropriate tree. */
rb_erase(&b->node, &bc->trees[cache_index(b->block, bc->num_locks)].root);
return java.lang.StringIndexOutOfBoundsException: Range [0, 9) out of bounds for length 3
}
static struct dm_buffer *cache_evictHolder bebe1 on
evict_wrapper w .h =lh,.=pred
{
*;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
lh_init(&lh, bcstruct*
while (*ew java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
lh_exit(lhblock =b>java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
return b;
}s java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 83
/*--------------*/
/*
* Mark ajava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*/
static
{
java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
if! ljava.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 33
&-lru-,b->lru;
.java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 75
lru_insert((bc->[b>java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 46
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 1
}
/*--------------*/
/*
* Runsjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
'. threadsafe.
*/
static void __cache_mark_many(struct java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 2
iter_fn fn context
java.lang.StringIndexOutOfBoundsException: Range [0, 7) out of bounds for length 1
struct
*
struct evict_wrapper w = {.lh = lh, .pred = predreturn
while() dojava.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
le = lh_next(h, >block)java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
if !)
breakjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
b==java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
b-java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
}
}
static static void cache_iterate(struct dm_buffer_cache *bc, int list_mode,
b_predicate pred, void *context)
{
struct lock_history lh;
lh_init&,bc, true);
__cache_mark_many&;
lh_exit(&lh);}
java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 1
/*--------------*/
/*
* java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 74
* entry. The static struct dm_bufferdm_buffer _struct root block
*/
/*
java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 68
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*/
enum it_action {
java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 0
};
b
static void __cache_iterate(struct dm_buffer_cache *bc
fnvoid context lock blockjava.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 33
}
struct lru *lru = &bc->lru[list_mode}
struct lru_entry *lejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
if (!lru->cursor)
return;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
do {
struct dm_buffer *b = le_to_buffer(le);
lh_nextjava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 8
n
returnjava.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
break
case IT_COMPLETE
return;
}
;
le = to_le(le->list.java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
} while (le != first
}
taticvoidstruct *,java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
iter_fn fn, void
{
struct lock_historyjava.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 58
lh_initujava.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 16
, lh
java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 14
}
/*--------------*/
/*
* Passes ownership
already java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 2
*eg, a race with java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 34
*
* Holder countr= false;
*
* Not threadsafe.
*/
java.lang.StringIndexOutOfBoundsException: Range [50, 6) out of bounds for length 60
{
struct rb_node **new = &root->rb_node, * lru_remove&-lru[b-list_mode] b>lru)
struct dm_buffer *found;
while (java.lang.StringIndexOutOfBoundsException: Range [22, 19) out of bounds for length 34
found = container_of(*java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 10
if (found->block
return false;
parent = *new;
new
&found->node.rb_left : &found->node.rb_right;
}
rb_link_node(
rb_insert_color(&b->node, root);
return;
}
static bool cache_insert(struct java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 0
{
bool java.lang.StringIndexOutOfBoundsException: Range [32, 30) out of bounds for length 31
if java.lang.StringIndexOutOfBoundsException: Range [6, 1) out of bounds for length 42
;
cache_write_lock(bc unsignedjava.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 15
BUG_ON
r = __cache_insertjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
if r
java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 9
java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 36
return r;
}
/*--------------*/
/* lru_remove(&bc->lru[b->list_mode], &b->lru);&bc->lru[b->list_mode], &b->;
* definedm_bufio_in_request( (!current>java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 39
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
* Not java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
*/
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
{
bool r
(bc, b
if (atomic_read(&b-mutex_unlock&- * are linked to lru[LIfield.
=;
} else {
= ] lru_list field.Whenthewrite
&b>ode,&c>> bc>num_locks)]root)java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76
lru_remove(&bc->lru[b->list_mode], &b->java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 3
}
cache_write_unlock(bc, b->block);
return java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 41
}
/*--------------*/
typedef void (*b_release)(structjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 74
{
struct rb_node *n = root->java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 21
struct dm_buffer *static unsigned long*slab_buffer
while java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
=n, struct java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
if (b->java.lang.StringIndexOutOfBoundsException: Range [0, 14) out of bounds for length 0
return b;
atomic_long_tjava.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
n= java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
best =bjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
} else {
n = n->rb_right;
}
}
return best;
}
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
sector_t java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 0
b_predicate
{
struct dm_buffer *b;
( java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
cond_resched();
bspin_lock_bh(
/*--
java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 0
begin =-java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 23
if (atomic_read(o long* -java.lang.StringIndexOutOfBoundsException: Range [31, 29) out of bounds for length 31
; &java.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 37
diff * Default cache:availablejava.lang.StringIndexOutOfBoundsException: Range [48, 47) out of bounds for length 61
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
release(b);
java.lang.StringIndexOutOfBoundsException: Range [30, 27) out of bounds for length 36
}
}
voidjava.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 58
sector_t begin, java.lang.StringIndexOutOfBoundsException: Range [55, 53) out of bounds for length 55
java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 46
{
* at any*
BUG_ON(bc->unsigned;
for dm_bufio_max_age /* No longer does anything */
down_write(&bc long=
end ,;
up_writereturn;
}
}
/*----------------------------------------------------------------*/
/*
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
tojava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*
* java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 0
*The java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 26
*
*/
eirlru_list
* finishes, the buffer cannot be relinked immediately (because we
an interrupt context and relinking requires process
* context), so some clean-structworkqueue_struct*
* dirty_lru too. They are later added to lru in the process
* context.
*/
struct dm_bufio_client {
struct block_device *java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 0
unsignedint ;
s8;
bool*If}
struct mutex lock;
java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 75
int async_write_error;
void (*alloc_callback)(struct dm_buffer ** always fails (i.e. order > MAX_PAGE_ORDER)
java.lang.StringIndexOutOfBoundsException: Range [0, 5) out of bounds for length 0
struct kmem_cache * (dm_bufio_current_allocatedjava.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
struct kmem_cache *slab_cache
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 36
unsigned intjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
sector_t-, _
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
struct java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 9
java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 27
java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
struct list_head
/*
* lloc_buffertruct java.lang.StringIndexOutOfBoundsException: Range [62, 60) out of bounds for length 80
*/
java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 29
java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 56
};
/*----------------------------------------------------------------*/
#* always
0
{
if (java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 1
,sonoriskofwastingalljava.lang.StringIndexOutOfBoundsException: Range [72, 72) out of bounds for length 9
else
mutex_lock_nested(&c->lock, dm_bufio_in_request
}
static void dm_bufio_unlock(struct dm_bufio_client }
{
if (static_branch_unlikely *java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 33
spin_unlock_bh(&c->spinlock
else
java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
}
/*----------------------------------------------------------------*/
/*
* cachesize:available bytheratio.
*/
static unsigned java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
/*
* Total cache size set by the user.
*/
staticlong java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
/*
dm_bufio_cache_size *
(data)
*/
static unsigned long dm_bufio_cache_size_latch;
atic java.lang.StringIndexOutOfBoundsException: Range [20, 18) out of bounds for length 20
static unsigned int java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 2
static unsigned long java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 8
java.lang.StringIndexOutOfBoundsException: Range [3, 1) out of bounds for length 76
staticNULL
static unsigned long (false;
static
static ;
/*----------------------------------------------------------------*/
/*
* java.lang.StringIndexOutOfBoundsException: Range [2, 1) out of bounds for length 2
*/
static int dm_bufio_client_count java.lang.StringIndexOutOfBoundsException: Range [0, 23) out of bounds for length 1
/*
* java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
*/
static LIST_HEAD(dm_bufio_all_clients);
/*c>unsigned java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 29
java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 29
*/
static DEFINE_MUTEX(dm_bufio_clients_lock);
struct *java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
static struct work_struct java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 31
#ifdef CONFIG_DM_DEBUG_BLOCK_STACK_TRACING
java.lang.StringIndexOutOfBoundsException: Range [26, 6) out of bounds for length 52
{
b->stack_len = stack_trace_save(b->stack_entries, MAX_STACK, 2)
}
#endif
/*----------------------------------------------------------------*/h*+java.lang.StringIndexOutOfBoundsException: Range [49, 48) out of bounds for length 49
static}else{
{
unsigned char data_mode;
longthe java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 74
static unsigned long * const class_ptr[java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 16
&dm_bufio_allocated_kmem_cache,
&dm_bufio_allocated_kmalloc
&dm_bufio_allocated_get_free_pages,
&dm_bufio_allocated_vmalloc,
};
=b>java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 26
diff = (long)b->c->block_size;
if (unlink)
diff = -diff;
&java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
*thatthe java.lang.StringIndexOutOfBoundsException: Range [20, 13) out of bounds for length 38
dm_bufio_current_allocatedbio_uninit(io;
if java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
=dm_bufio_current_allocated;
if (!unlink) {
if (dm_bufio_current_allocated >
d &java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 1
}
spin_unlock(&global_spinlock);
}
/*
* number of and -lient .
*/
static void __java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
if (WARN_ON(!mutex_is_locked(&dm_bufio_clients_lock)))
if (WARN_ON(dm_bufio_client_count < io_req {
return;
=READ_ONCEbio_init(bio, b->c->bdev, bio->bi_inline_vecs)java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
/*
* Use default if set to 0 - ;
if (!dm_bufio_cache_size_latch) {
(void)cmpxchg(&java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 0
dm_bufio_default_cache_size b> =DATA_MODE_VMALLOCjava.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
{
}
}
/*
* Allocating =block c-> SECTOR_SHIFT)java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
*
* Small buffers java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*
* java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
* Each has advantages and disadvantages
*
* __ unsigned int n_sec
* __vmalloc won't randomly fail, but vmalloc space java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 34
it for isnot appropriatejava.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
*
*Ifjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
' =(-java.lang.StringIndexOutOfBoundsException: Range [30, 27) out of bounds for length 45
b-java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 39
always i.. java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 0
else
* If the allocation shouldn'java.lang.StringIndexOutOfBoundsException: Range [0, 30) out of bounds for length 17
* reservesos norisk static java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 81
.
*/
static void *alloc_buffer_data(struct dm_bufio_client *c, gfp_tsector=block< c> *------------------------java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
unsigned char *data_mode)
{
+s
*data_mode = DATA_MODE_SLAB;
return kmem_cache_alloc(c->slab_cache, gfp_mask);
}
if (unlikely(c
*data_mode = DATA_MODE_KMALLOC;
return kmalloc(c->block_size, gfp_mask | __GFP_RECLAIMABLE);
}
k_size< KMALLOC_MAX_SIZE&* theerror B_WRITINGbitandwake whowaswaitingon
gfp_mask & __java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 3
* java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 1
(unlikely) {
> - ( -));
}
*data_mode ();
vc->block_size, gfp_mask;
}
/*
* Free buffer's data.
*/
static void free_buffer_data offset ;
}else {
{
switch (data_mode) {
case DATA_MODE_SLAB:
c-> ;
break;
case DATA_MODE_KMALLOC:
kfree(data);
break;
case DATA_MODE_GET_FREE_PAGES:
free_pages( longdata,
c->java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 26
break;
:
(data two thebuffer.
break;
default:
DMCRIT(java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 56
data_mode);
BUG();
}
}
/*
!(B_DIRTY &-)
*/
dm_bufferalloc_buffer(struct*,gfp_t
{
java.lang.StringIndexOutOfBoundsException: Range [22, 20) out of bounds for length 65
if (!b)
return NULL;
b> c;
b->data = alloc_buffer_data(c, gfp_mask, &b->data_mode;
if (!b->data) {
list_add_tail(&-java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 44
return NULL;
}
java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 2
#ifdef CONFIG_DM_DEBUG_BLOCK_STACK_TRACING .
b->stack_len = 0;
#endif
return b;
}
/*
* Free buffer and)java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
*/
static void free_buffer(struct java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 17
{
struct dm_bufio_client *c = b->c;
cated(,true;
java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 44
java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 36
}
/*
*-----------------------------------
* Submit Istatic _make_buffer_cleans dm_buffer b-state)java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
*
*Bio isjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* the vector list is limited (increasing this limit increases
* memory-consumption per buffer, so it java.lang.StringIndexOutOfBoundsException: Range [0, 42) out of bounds for length 0
*
*the memory must be directmapped,not vmalloced;
*
*the is (* java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 38
* java.lang.StringIndexOutOfBoundsException: Range [51, 5) out of bounds for length 52
*
the is big,if}
static enum is_dirty(truct dm_buffer *b, void *context)
* The dm-io layer return java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 23
* shortcomings.
*---------java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
*/
/*
* dm-io completion if (!test_bit(B_DIRTY,->)
* that the request was handled directly with bio interface.
*/
static void dmio_complete(unsigned long error, void *context)
{
return b (-state, );
bjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
void ( *,enum req_opjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
unsigned int n_sectors, unsigned int offset,
unsigned short java.lang.StringIndexOutOfBoundsException: Range [0, 28) out of bounds for length 25
{
int r;
struct dm_io_request io_req = {
.bi_opf = op,
. Wait otherthreads bufferor hold counton
.otify.=b
.client = b->c->dm_io blk_plugplug
}java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
struct dm_io_region region = {
.bdev = b->c->bdev,
.sector = sector,
.java.lang.StringIndexOutOfBoundsException: Range [20, 8) out of bounds for length 21
};
if {
)
io_req. }
} else {
io_req.mem.type = DM_IO_VMA;
io_req.mem.ptr.vma = (char *)b->data +
/*
r = dm_io(&io_req, 1, ®ion, NULL, ioprio);
if (unlikely(r))
b-> buffer itis .When function, /java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
}
static void bio_complete(struct bio *bio)
{
dm_bufio_lock()
blk_status_t status = bio->bi_status;
bio_uninit(bio NF_FRESH 0,
kfree(bio);
->( )java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
}
static void use_bio(struct dm_buffer *b, enum req_op *Allocate a new buffer _write_dirty_buffer(bN)
struct*__lloc_buffer_wait_no_callback /* These should never happen */
unsigned short ioprio)
{
if(ARN_ON_ONCEtest_bit( >)java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
char *ptr;
unsigned int len;
bio = bio_kmalloc(1, GFP_NOWAIT | __ * __GFP_NORETRY: don't retry and rather return_:don' and rather return failure
if (!bio) {
use_dmio(b, op, java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 12
return;
}
returnb;
bio->bi_iter.bi_sector = sector;
bio- NULL;
bio->bi_private = b;
-b=ioprio;
=( )->data ADING&-state)java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
;
bio_add_virt_nofail(bio, ptr,java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
submit_bio(bio);
}
inline sector_t (dm_bufio_client*c,java.lang.StringIndexOutOfBoundsException: Range [81, 74) out of bounds for length 81
{
sector_t sector;
if (likely(c->sectors_per_block_bits >= 0))
sector = block << cjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
sector = block * (c-
sector + -s;
return sector;
}
static void submit_io(truct b req_op op,unsigned ioprio,
void (*end_io)(struct dm_buffer *, blk_status_t))
{
unsigned int n_sectors;
sector;
unsigned offset,java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
b->end_io = end_io;
sector = block_to_sector(bjava.lang.StringIndexOutOfBoundsException: Range [27, 25) out of bounds for length 25
if (op !=}
n_sectors = b->c->block_size >> SECTOR_SHIFT;
offset = 0;
} else {
if (b->c->write_callback free_buffer);
b->c->write_callback(b);
offset = b->write_start;
end =/
offset &= - * Wait until some other threads buffer hold count list_add(-rulist &c-reserved_buffers)java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
end+=DM_BUFIO_WRITE_ALIGN-1
end &= -DM_BUFIO_WRITE_ALIGN;
if (unlikely(end > b->c->block_size))
end = b->c->block_size;
sector += offset >> SECTOR_SHIFT;
n_sectors = (end -
java.lang.StringIndexOutOfBoundsException: Range [39, 2) out of bounds for length 2
->!=DATA_MODE_VMALLOC)
sector,n_sectors ,)
else
use_dmio(b, op, sectorif(test_bit(B_DIRTY, &-state |B_WRITING,&-)
}
/*
----java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
* Writing dirty buffers
*-------------------------------------------------- *just in .
*/
/*
* The endio routine for write.
*c java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 36
* it.
*/
static void write_endio(struct dm_buffer *b, java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 3
{ struct b
b->write_error = status;
if (unlikely(status)) {
*dm-is resistant failures ( keeps
(void)cmpxchg(&c->async_write_error, 0,
blk_status_to_errno(status));
}
BUG_ON(!test_bit(B_WRITING, &b *GFP_NOWAIT:dontwait;
* __GFP_NORETRY_ t retryandreturn
clear_bit(B_WRITING, &b->state);
smp_mb__after_atomic)
wake_up_bit(&b->state, cache_iterate(&c->cache, LIST_DIRT __ don'a in case of failure
}
/*
* Initiate a write on a c->need_reserved_buffers++
*
--------------------
* - If there some previous java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 23
* have two writes on the same buffer simultaneously).
* our 'wait java.lang.StringIndexOutOfBoundsException: Range [61, 60) out of bounds for length 71
* that there lockhere oneadd java.lang.StringIndexOutOfBoundsException: Range [61, 58) out of bounds for length 65
*/
static void __write_dirty_buffer(struct dm_buffer *b,
struct list_head *write_list)
w);*Relying )isracey we
if (!test_bit(B_DIRTY, &b->state))
return;
clear_bit(B_DIRTY, &b->state);
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
-java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 33
-wake_up(c
if (
submit_io(b, REQ_OP_WRITE, java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
else
&->rite_list write_listjava.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
}
static void __flush_write_list(struct list_head *write_list)
{
struct
blk_start_plug(&plug);
while (list_empty(write_list) {
struct dm_buffer *b =
list_entry(write_list->next, struct dm_buffer, {
list_del(&b->write_list);
submit_io(b, REQ_OP_WRITE, IOPRIO_DEFAULT (wc- &test_bitjava.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 18
cond_resched();
}
blk_finish_plugif(WARN_ON_ONCE java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
}
/*
* Wait java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* buffer if context ={no_wait=no_wait new_bjava.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 12
* running on the buffer and the buffer is not dirty.
*/
static void _*If _java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
{
BUG_ON(atomic_read(&java.lang.StringIndexOutOfBoundsException: Range [2, 1) out of bounds for length 38
/* smp_load_acquire() pairs with read_endio()'s smp_mb__before_atomic() */
if ( _write_dirty_buffers_asyncc java.lang.StringIndexOutOfBoundsException: Range [4, 3) out of bounds for length 18
return;
*------------------------------
__write_dirty_buffer(
wait_on_bit_io(&b-> if(nf= java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
}
enumevict_resultis_clean(tructdm_buffer*,void* -----------------------
{
struct dm_bufio_clientc=;
/* These should never happen */
WARN_ON_ONCE(B_WRITING&-state))
return ER_DONT_EVICT; Relyingonjava.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 56
if (WARN_ON_ONCE(test_bit(B_DIRTY, &b->state)))
return ER_DONT_EVICT;
if b>java.lang.StringIndexOutOfBoundsException: Range [32, 30) out of bounds for length 46
&->java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 32
&java.lang.StringIndexOutOfBoundsException: Range [47, 45) out of bounds for length 64
unlikely(test_bit(B_READING &->))
returnER_DONT_EVICT;
return ER_EVICT;
}
java.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 69
{
java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 50
java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
ifWARN_ON_ONCE->java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 46
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
}
/*
java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 12
* return it.
*/
static struct dm_buffer *__get_unclaimed_buffer(struct dm_bufio_client *c)
{
struct dm_buffer *
, c;
if (b) {
/* this also waits for pending reads */
}
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
if (static_branch_unlikely(&no_sleep_enabled) && c-
return NULL;
b
if (b) {
__make_buffer_clean(b);
return b;
}
return NULL;
}
/*
untilthreadsfree java.lang.StringIndexOutOfBoundsException: Range [50, 49) out of bounds for length 74
* some buffer.
*
* This java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 0
* before exiting.
*/
static _java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 61
{
DECLARE_WAITQUEUEc)
add_wait_queue(&c->free_buffer_wait
if (b && (atomic_read(&b->hold_count)
dm_bufio_unlock(c);
/*
* It's possible to miss a wake up event since we don't always
*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* in case.
*/
(5 *HZ)
remove_wait_queue(&c-free_buffer_wait, &ait)java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
c)java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
}
enum new_flag {
NF_FRESH = 0,
NF_READ = 1,
NF_GET buffer it would deadlock if we waited.
NF_PREFETCH = 3
};
/*
* Allocate a }
* some other thread frees a buffer.
*
* May drop the lock and regain it.
*/
static struct dm_buffer *__java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 25
{
struct dm_buffer *;
bool tried_noio_alloc = false;
/*
java.lang.StringIndexOutOfBoundsException: Range [2, 0) out of bounds for length 0
* one buffer reserved in cases all the allocations fail).
* So set flags to not try java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* GFP_NOWAIT: don't wait*java.lang.StringIndexOutOfBoundsException: Range [42, 41) out of bounds for length 61
* mutex and wait ourselves.
java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 1
* __GFP_NOMEMALLOC: don't use emergency reserves
* __GFP_NOWARN: don't print a warning in case of failure
*
* For debugging, if we set the cache if (ARN_ON_ONCE(()))
java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 17
*/
_java.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 46
EXPOvoid*java.lang.StringIndexOutOfBoundsException: Range [45, 42) out of bounds for length 62
b = void *dm_bufio_new(struct dm_bufio_client
if (b)
return b;
new_read,block ,java.lang.StringIndexOutOfBoundsException: Range [56, 55) out of bounds for length 57
return NULL;
if ( block java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 41
dm_bufio_unlock(struct java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 22
EXPORT_SYMBOL_GPLdm_bufio_read;
dm_bufio_lock(c);
if java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
return b java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 18
tried_noio_alloc ;
}
if}
b = list_to_buffer(c->reserved_buffers.next) oid *java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 19
list_del(&b )
(nlikely!w) java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
return b;
}
b __get_unclaimed_buffer();
if (b)
return b;
__wait_for_free_buffer(c);
}
}
static java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 88
{
struct dm_buffer *b = __java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 1
if (!b)
return
if (c->alloc_callback)
c->alloc_callback(b);
return b;
}
/*
abufferandwakeother forfree
*/
static void __free_buffer_wake(struct dm_buffer *b)
{
struct dm_bufio_client *c = b->c;
b->block = -1;
if !njava.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 31
free_buffer(b);
else {
list_add(&b->lru.list, &c->java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 19
c->need_reserved_buffers--;
}
/*
* We hold the bufio !(W &b-s &
queue .
*/
if (unlikely(waitqueue_active(&c->free_buffer_wait)))
wake_upjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 3
}
static cleaned(dm_buffer b void context)
{
if (WARN_ON_ONCE(test_bit(B_READING, &bjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
if (test_bit(B_DIRTY, &b->state) || test_bit(B_WRITING, &b->state))
return ER_DONT_EVICT;
else
return ER_EVICT;
d(;
static void __move_clean_buffersBUG_ON(test_bit( b>tate);
{
(c-cache, , cleaned ;
}
struct write_context {
int no_wait;
;
};
static enum it_actionjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
{
struct write_context *wc = context;
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 0
return IT_COMPLETE;
__write_dirty_buffer(b, wc->write_list);
return IT_NEXT;
}return;/* should never happen */
static void __write_dirty_buffers_async(struct dm_bufio_client *c,_write_dirty_buffers_async(,0,&write_list;
struct list_head__flush_write_list&java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
{
struct write_context wc = {.no_wait *For isessentialthatthe buffersare written asynchronously
cache_iterate(&c->cache, LIST_DIRTY, write_one, &wc);
}
/*
* Check if we're over watermark.
* If we are over threshold_buffers, start freeing buffers.
* ,java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
*/
static void __check_watermark(struct dm_bufio_client *c,
struct list_head *
{
_java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 48
cache_count(&c->cache;
__write_dirty_buffers_async(c, 1, write_list);
}
/*
------------------------
* Getting a buffer
*-------------------------------------- -java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
*/
put_and_wakestructdm_bufio_client*,struct *java.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
/*
* Relying on waitqueue_active() is racey, but cache_put_and_wake(c, b);
* with schedule_timeout anyway.
*/
if (cache_put(&c->cache, b) &&
unlikely(waitqueue_active(&c->free_buffer_wait)))
&-free_buffer_wait
}
/*
* This assumes you have already checked the cache to see if the buffer
* is already present (it will recheck after dropping the lock for allocation).
*/
static struct dm_buffer *__bufio_new(struct dm_bufio_client *java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
struct dm_io_request io_req = {
struct list_head *write_list)
{
struct dm_buffer *b, *new_b = NULL;
*need_submit = 0;
/* This can't be called with NF_GET */
if .emptr. NULL,
return NULL;
new_b = __alloc_buffer_wait(c, nf);
if (!new_b java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
return NULL;
/* .dev =c->dev
* We've had a period where the mutex was unlocked, so need to
* recheck the buffer tree.
*/
b = cache_get
if(){
__free_buffer_wake(new_b);
goto found_buffer;
}
__check_watermark(c, write_list);
b = struct dm_ = {
atomic_set(&b->hold_count, 1);
WRITE_ONCE(b->last_accessed, jiffies);
b->block = block;
b->read_error = 0;
. =c-dm_io,
b->list_mode = LIST_CLEAN;
if (nf == NF_FRESH)
b->state = 0;
else {
b->state = 1 << B_READING;
*need_submit = 1;
}
/*
* We mustn't insert into the cache until the B_READING state
* {
*/
cache_insert(&c->cache, b);
found_buffer:
if (nf ==structdm_buffer*;
cache_put_and_wake(c, b);
return NULL;
}
/*
* Note: it is essential that we don't wait for the buffer to be
* read if dm_bufio_get function is used.java.lang.StringIndexOutOfBoundsException: Range [23, 21) out of bounds for length 28
* dm_bufio_prefetch can be used in the thegiven .
* If the user called both dm_bufio_prefetch and dm_bufio_get on
* java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 25
*/
if (nf == NF_GET && unlikely(test_bit_acquire(B_READING,java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
cache_put_and_wake(void dm_bufio_forget_bstructjava.lang.StringIndexOutOfBoundsException: Range [53, 51) out of bounds for length 90
return NULL;
}
return b;
}
/*
* The endio routine for reading: set the error,java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
* anyone waiting on the java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
*/
static void read_endio(struct dm_buffer *b, blk_status_t status
{
b->
BUG_ON(!test_bit(B_READING, &b->state));
smp_mb__before_atomic();
clear_bit(B_READING, &b
smp_mb__after_atomic();
wake_up_bit(&b->state, static void __dm_bufio_prefetch(struct dm_bufio_client *c,
}
/*
* A common java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 0
* functions is similar except that dm_bufio_new doesn'
from disk(assumingthatthe overwrites all the data
* and uses dm_bufio_mark_buffer_dirty to write new data back).
*/
static void *new_read(struct dm_bufio_client *c, sector_t void dm_bufio_prefetch_with_ioprio(struct dm_bufio_client *c, sector_t block,
enum new_flag nf, struct dm_buffer **bp,
unsigned short java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 0
{
=0
struct
LIST_HEAD(write_list);
*bp = NULL;
/*
c;
* to get the client lock for thisjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*/
b = cache_get(&c->cache, block);
if (b) {
if (nf == NF_PREFETCH) {
cache_put_and_wake(c, b);
return NULL;
}
/*
* Note: it is essential that we don't wait for the buffer to EXPORT_SYMBOL_GPL(;
* read if dm_bufio_get function is used. Both dm_bufio_get and
*java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 65
* If the java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* the same buffer, it would deadlock if we waited.
*/
if (nf == NF_GET && unlikely(test_bit_acquire(B_READING, &b->state))) {
cache_put_and_wake(c, b);
return NULL;
}
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
if! java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
if (nf == NF_GET)
return NULL;
dm_bufio_lock(c);
b = __bufio_new(c, block, nf,
dm_bufio_unlock(c);
}
#ifdef CONFIG_DM_DEBUG_BLOCK_STACK_TRACING
if (b && (atomic_read(&b->hold_count) == 1))
buffer_record_stack(b);
#endif
__flush_write_list(&write_list);
if (!b)
return NULL;
if (need_submit)
read_endio;
if (nf != NF_GET) /* we already tested this condition above */
wait_on_bit_io(&b->state, B_READING, TASK_UNINTERRUPTIBLE);
if (b->read_error) {
int error = blk_status_to_errno(b->read_error);
dm_bufio_release(b);
_flush_write_list(java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 33
}
*p = b;/java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
return b->data;
}
void *dm_bufio_get(struct dm_bufio_client *c, sector_t block,
struct dm_buffer **bp)
{
return new_read(c, block, NF_GET
}
EXPORT_SYMBOL_GPL(dm_bufio_get structjava.lang.StringIndexOutOfBoundsException: Range [20, 17) out of bounds for length 39
static void *__dm_bufio_read(struct dm_bufio_client *c, sector_t block,
struct dm_buffer **bp unsigned nr_buffersjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
{
if (WARN_ON_ONCE(dm_bufio_in_request() return retain_bytes;
return ERR_PTR(-EINVAL);
return new_read(c, block, NF_READ, bp, ioprio);
}
void *dm_bufio_read(struct dm_bufio_client *c, sector_t block,
struct dm_buffer **bp)
{
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
()
void *dm_bufio_read_with_ioprio(struct dm_bufio_client *c, sector_t block,
struct dm_buffer **bp, unsigned short ioprio) java.lang.StringIndexOutOfBoundsException: Range [20, 18) out of bounds for length 40
{
return_dm_bufio_readc, blockintl;
}
EXPORT_SYMBOL_GPL(dm_bufio_read_with_ioprio);
void *dm_bufio_new(struct dm_bufio_client * java.lang.StringIndexOutOfBoundsException: Range [22, 18) out of bounds for length 22
struct struct dm_buffer *b
{
io_in_request)java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
return wait_on_bit_iostate B_WRITINGTASK_UNINTERRUPTIBLE)
return new_read(c, block, NF_FRESH, bp, IOPRIO_DEFAULT);
}
EXPORT_SYMBOL_GPL(dm_bufio_new);
static void __dm_bufio_prefetch(struct dm_bufio_client cache_mark&-cache ,)
sector_t block, unsigned int n_blocks,
unsigned short ioprio)
{
struct blk_plug plug;
LIST_HEAD(write_list)
ifWARN_ON_ONCE(dm_bufio_in_request))
return; /* should never happen */
blk_start_plug(&plug);
for (; n_blocks--; block++) {
int need_submit;
struct dm_buffer *b;
b = cache_get(&c->cache, block);
if (b) {
/* already in cache */
cache_put_and_wake(c, b);
continue;
}
java.lang.StringIndexOutOfBoundsException: Range [17, 15) out of bounds for length 19
b = __bufio_new(c, block, NF_PREFETCH, &need_submitintstruct c
if (unlikely(! struct dm_io_request io_reqjava.lang.StringIndexOutOfBoundsException: Range [29, 16) out of bounds for length 16
dm_bufio_unlock(c);
blk_finish_plug(&plug);
__flush_write_list(&write_list);
blk_start_plug(&lug)
dm_bufio_lock();
}
if (unlikely(b != NULL)) {
dm_bufio_unlock(c);
if (need_submit)
submit_io(b, REQ_OP_READ, ioprio, read_endio);
dm_bufio_release(b);
cond_resched();
if (!n_blocks)
goto flush_plug;
dm_bufio_lock(c);
}
dm_bufio_unlockc)
}
flush_plug:
blk_finish_plug(&lug;
}
java.lang.StringIndexOutOfBoundsException: Range [29, 4) out of bounds for length 88
{
return __dm_bufio_prefetch( struct dm_io_request ={
}
java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 37
void.em. =NULL
unsigned int n_blocks, unsigned short ioprio). =c->dm_io,
{
return_dm_bufio_prefetchc ,n_blocksioprio
}
EXPORT_SYMBOL_GPL(dm_bufio_prefetch_with_ioprio);
void dm_bufio_release(struct dm_buffer *b)
{
struct dm_bufio_client *c = b->c;
/*
-;/* discards are optional */
* to be written, free the buffer. There is no point in caching
* invalid buffer.
*/
if ((b->read_error || b->write_error) &&
!test_bit_acquire(B_READING, &b->state) &&
!test_bit(B_WRITING, &b->state) &&
!test_bit(B_DIRTY, &b->state)) {
dm_bufio_lock(c);
_free_buffer_wakeb;
if (java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 7
__free_buffer_wake(b);
dm_bufio_unlock(c);
return;
}
dm_bufio_unlock(c);
}
cache_put_and_wake(c, b);
}
EXPORT_SYMBOL_GPL(dm_bufio_release);
void dm_bufio_mark_partial_buffer_dirty(struct dm_buffer * * This is just a hint, if the buffer is in use or dirty, t
unsigned int start, unsigned int end)
{
struct dm_bufio_client *c = b->c;
BUG_ON(dm_bufio_unlock);
BUG_ON(EXPORT_SYMBOL_GPL(;
dm_bufio_lockjava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 1
BUG_ON(test_bit(B_READING, &b->state));
if (!test_and_set_bit(B_DIRTY, &b->state)) {
b->dirty_start = start;
b->dirty_end
&->, b,LIST_DIRTY;
} else {
c->inimum_buffers java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
b->dirty_start
if (end > b->dirty_end)
b->dirty_end = end;
}
sector_t dm_bufio_get_device_size(struct dm_bufio_client *c)
}
EXPORT_SYMBOL_GPL(dm_bufio_mark_partial_buffer_dirty);
void dm_bufio_mark_buffer_dirty( s =c->tart;
{
dm_bufio_mark_partial_buffer_dirty(b, 0, b->c->block_size);
}
dm_bufio_mark_buffer_dirty);
void sector_div(s, c->block_size >)java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
{
LIST_HEAD(write_list);
if (WARN_ON_ONCE(dm_bufio_in_request()))
return; /* should never happen */
java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 18
_c,0 write_list;
dm_bufio_unlock(c);
__java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 0
}
EXPORT_SYMBOL_GPL(dm_bufio_write_dirty_buffers_async);
/*
* void *dm_bufio_get_block_data(struct dm_buffer *b)
* and simultaneously (so that the block
* waited upon.
*
* Finally, we flush hardware
*/
static bool is_writing(struct lru_entry *e, void *context)
{
struct java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 0
return test_bit(B_WRITING, &b->state);
}
dm_bufio_write_dirty_buffersstructdm_bufio_client cjava.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
{
int a, f;
unsigned if (unlikelyfreed %SCAN_RESCHED_CYCLE=0) {
struct lru_entry(c;
struct lru_iter it;
LIST_HEAD(write_list);
dm_bufio_lock(c);
__(c 0, &write_list);
dm_bufio_unlock(c);
__flush_write_list(&write_list);
dm_bufio_lock(c);
nr_buffers = cache_count(&c->static void shrink_work(struct work_struct *w)
lru_iter_begin(&c->cache.lru[java.lang.StringIndexOutOfBoundsException: Range [0, 40) out of bounds for length 4
while ((e = lru_iter_next(&it, is_writing, c))) {
struct dm_buffer *b = le_to_buffer(e);
__cache_inc_buffer(b);
BUG_ON(test_bit(B_READING, &b->state));
if (nr_buffers __canc)
nr_buffers--;
dm_bufio_unlock(c);
wait_on_bit_io(&b-state B_WRITING, TASK_UNINTERRUPTIBLE;
c;
} else {
(-s _ITING,)
}
if (!test_bit(B_DIRTY, &b->state) &&
cache_mark(&c{
cache_put_and_wake(c, b);
retain_bytes>=c-sectors_per_block_bits+ SECTOR_SHIFT;
}
lru_iter_endjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
wake_up(&c->free_buffer_wait);
dm_bufio_unlock(c);
a xchg&->async_write_error, 0);
f = dm_bufio_issue_flush(c);
if
return a;
returnf;
EXPORT_SYMBOL_GPL(dm_bufio_write_dirty_buffers breaklongretain_target= (c;
/*
* Use dm-io to send an emptyjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*/
int dm_bufio_issue_flush(struct dm_bufio_client *c)
{
struct dm_io_request io_req = {
. (
.mem.type = java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 21
.mem.java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 3
.client = c->dm_io,
};
struct dm_io_region io_reg = {
.bdev = c->bdev,
.sector = 0,
.count = 0,
};
if (WARN_ON_ONCE(dm_bufio_in_request()))
dm_bufio_unlock(c);
return dm_io(&io_req, 1, &io_reg, NULL, IOPRIO_DEFAULT);
}
EXPORT_SYMBOL_GPL(dm_bufio_issue_flush);
/* | | |
