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-rw-r--r--drivers/md/dm-bio-list.h117
-rw-r--r--drivers/md/dm-delay.c2
-rw-r--r--drivers/md/dm-mpath.c1
-rw-r--r--drivers/md/dm-raid1.c1
-rw-r--r--drivers/md/dm-region-hash.c1
-rw-r--r--drivers/md/dm-snap.c1
-rw-r--r--drivers/md/dm.c1
-rw-r--r--drivers/md/raid1.c1
-rw-r--r--drivers/md/raid10.c1
-rw-r--r--include/linux/bio.h109
10 files changed, 109 insertions, 126 deletions
diff --git a/drivers/md/dm-bio-list.h b/drivers/md/dm-bio-list.h
deleted file mode 100644
index 345098b4ca77..000000000000
--- a/drivers/md/dm-bio-list.h
+++ /dev/null
@@ -1,117 +0,0 @@
1/*
2 * Copyright (C) 2004 Red Hat UK Ltd.
3 *
4 * This file is released under the GPL.
5 */
6
7#ifndef DM_BIO_LIST_H
8#define DM_BIO_LIST_H
9
10#include <linux/bio.h>
11
12#ifdef CONFIG_BLOCK
13
14struct bio_list {
15 struct bio *head;
16 struct bio *tail;
17};
18
19static inline int bio_list_empty(const struct bio_list *bl)
20{
21 return bl->head == NULL;
22}
23
24static inline void bio_list_init(struct bio_list *bl)
25{
26 bl->head = bl->tail = NULL;
27}
28
29#define bio_list_for_each(bio, bl) \
30 for (bio = (bl)->head; bio; bio = bio->bi_next)
31
32static inline unsigned bio_list_size(const struct bio_list *bl)
33{
34 unsigned sz = 0;
35 struct bio *bio;
36
37 bio_list_for_each(bio, bl)
38 sz++;
39
40 return sz;
41}
42
43static inline void bio_list_add(struct bio_list *bl, struct bio *bio)
44{
45 bio->bi_next = NULL;
46
47 if (bl->tail)
48 bl->tail->bi_next = bio;
49 else
50 bl->head = bio;
51
52 bl->tail = bio;
53}
54
55static inline void bio_list_add_head(struct bio_list *bl, struct bio *bio)
56{
57 bio->bi_next = bl->head;
58
59 bl->head = bio;
60
61 if (!bl->tail)
62 bl->tail = bio;
63}
64
65static inline void bio_list_merge(struct bio_list *bl, struct bio_list *bl2)
66{
67 if (!bl2->head)
68 return;
69
70 if (bl->tail)
71 bl->tail->bi_next = bl2->head;
72 else
73 bl->head = bl2->head;
74
75 bl->tail = bl2->tail;
76}
77
78static inline void bio_list_merge_head(struct bio_list *bl,
79 struct bio_list *bl2)
80{
81 if (!bl2->head)
82 return;
83
84 if (bl->head)
85 bl2->tail->bi_next = bl->head;
86 else
87 bl->tail = bl2->tail;
88
89 bl->head = bl2->head;
90}
91
92static inline struct bio *bio_list_pop(struct bio_list *bl)
93{
94 struct bio *bio = bl->head;
95
96 if (bio) {
97 bl->head = bl->head->bi_next;
98 if (!bl->head)
99 bl->tail = NULL;
100
101 bio->bi_next = NULL;
102 }
103
104 return bio;
105}
106
107static inline struct bio *bio_list_get(struct bio_list *bl)
108{
109 struct bio *bio = bl->head;
110
111 bl->head = bl->tail = NULL;
112
113 return bio;
114}
115
116#endif /* CONFIG_BLOCK */
117#endif
diff --git a/drivers/md/dm-delay.c b/drivers/md/dm-delay.c
index 59ee1b015d2d..559dbb52bc85 100644
--- a/drivers/md/dm-delay.c
+++ b/drivers/md/dm-delay.c
@@ -15,8 +15,6 @@
15 15
16#include <linux/device-mapper.h> 16#include <linux/device-mapper.h>
17 17
18#include "dm-bio-list.h"
19
20#define DM_MSG_PREFIX "delay" 18#define DM_MSG_PREFIX "delay"
21 19
22struct delay_c { 20struct delay_c {
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 095f77bf9681..6a386ab4f7eb 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -8,7 +8,6 @@
8#include <linux/device-mapper.h> 8#include <linux/device-mapper.h>
9 9
10#include "dm-path-selector.h" 10#include "dm-path-selector.h"
11#include "dm-bio-list.h"
12#include "dm-bio-record.h" 11#include "dm-bio-record.h"
13#include "dm-uevent.h" 12#include "dm-uevent.h"
14 13
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 536ef0bef154..076fbb4e967a 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -5,7 +5,6 @@
5 * This file is released under the GPL. 5 * This file is released under the GPL.
6 */ 6 */
7 7
8#include "dm-bio-list.h"
9#include "dm-bio-record.h" 8#include "dm-bio-record.h"
10 9
11#include <linux/init.h> 10#include <linux/init.h>
diff --git a/drivers/md/dm-region-hash.c b/drivers/md/dm-region-hash.c
index 59f8d9df9e1a..7b899be0b087 100644
--- a/drivers/md/dm-region-hash.c
+++ b/drivers/md/dm-region-hash.c
@@ -14,7 +14,6 @@
14#include <linux/vmalloc.h> 14#include <linux/vmalloc.h>
15 15
16#include "dm.h" 16#include "dm.h"
17#include "dm-bio-list.h"
18 17
19#define DM_MSG_PREFIX "region hash" 18#define DM_MSG_PREFIX "region hash"
20 19
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index 981a0413068f..d73f17fc7778 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -22,7 +22,6 @@
22#include <linux/workqueue.h> 22#include <linux/workqueue.h>
23 23
24#include "dm-exception-store.h" 24#include "dm-exception-store.h"
25#include "dm-bio-list.h"
26 25
27#define DM_MSG_PREFIX "snapshots" 26#define DM_MSG_PREFIX "snapshots"
28 27
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 8a994be035ba..424f7b048c30 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -6,7 +6,6 @@
6 */ 6 */
7 7
8#include "dm.h" 8#include "dm.h"
9#include "dm-bio-list.h"
10#include "dm-uevent.h" 9#include "dm-uevent.h"
11 10
12#include <linux/init.h> 11#include <linux/init.h>
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 274b491a11c1..36df9109cde1 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -35,7 +35,6 @@
35#include <linux/blkdev.h> 35#include <linux/blkdev.h>
36#include <linux/seq_file.h> 36#include <linux/seq_file.h>
37#include "md.h" 37#include "md.h"
38#include "dm-bio-list.h"
39#include "raid1.h" 38#include "raid1.h"
40#include "bitmap.h" 39#include "bitmap.h"
41 40
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index e293d92641ac..81a54f17417e 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -22,7 +22,6 @@
22#include <linux/blkdev.h> 22#include <linux/blkdev.h>
23#include <linux/seq_file.h> 23#include <linux/seq_file.h>
24#include "md.h" 24#include "md.h"
25#include "dm-bio-list.h"
26#include "raid10.h" 25#include "raid10.h"
27#include "bitmap.h" 26#include "bitmap.h"
28 27
diff --git a/include/linux/bio.h b/include/linux/bio.h
index b900d2c67d29..b89cf2d82898 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -504,6 +504,115 @@ static inline int bio_has_data(struct bio *bio)
504 return bio && bio->bi_io_vec != NULL; 504 return bio && bio->bi_io_vec != NULL;
505} 505}
506 506
507/*
508 * BIO list managment for use by remapping drivers (e.g. DM or MD).
509 *
510 * A bio_list anchors a singly-linked list of bios chained through the bi_next
511 * member of the bio. The bio_list also caches the last list member to allow
512 * fast access to the tail.
513 */
514struct bio_list {
515 struct bio *head;
516 struct bio *tail;
517};
518
519static inline int bio_list_empty(const struct bio_list *bl)
520{
521 return bl->head == NULL;
522}
523
524static inline void bio_list_init(struct bio_list *bl)
525{
526 bl->head = bl->tail = NULL;
527}
528
529#define bio_list_for_each(bio, bl) \
530 for (bio = (bl)->head; bio; bio = bio->bi_next)
531
532static inline unsigned bio_list_size(const struct bio_list *bl)
533{
534 unsigned sz = 0;
535 struct bio *bio;
536
537 bio_list_for_each(bio, bl)
538 sz++;
539
540 return sz;
541}
542
543static inline void bio_list_add(struct bio_list *bl, struct bio *bio)
544{
545 bio->bi_next = NULL;
546
547 if (bl->tail)
548 bl->tail->bi_next = bio;
549 else
550 bl->head = bio;
551
552 bl->tail = bio;
553}
554
555static inline void bio_list_add_head(struct bio_list *bl, struct bio *bio)
556{
557 bio->bi_next = bl->head;
558
559 bl->head = bio;
560
561 if (!bl->tail)
562 bl->tail = bio;
563}
564
565static inline void bio_list_merge(struct bio_list *bl, struct bio_list *bl2)
566{
567 if (!bl2->head)
568 return;
569
570 if (bl->tail)
571 bl->tail->bi_next = bl2->head;
572 else
573 bl->head = bl2->head;
574
575 bl->tail = bl2->tail;
576}
577
578static inline void bio_list_merge_head(struct bio_list *bl,
579 struct bio_list *bl2)
580{
581 if (!bl2->head)
582 return;
583
584 if (bl->head)
585 bl2->tail->bi_next = bl->head;
586 else
587 bl->tail = bl2->tail;
588
589 bl->head = bl2->head;
590}
591
592static inline struct bio *bio_list_pop(struct bio_list *bl)
593{
594 struct bio *bio = bl->head;
595
596 if (bio) {
597 bl->head = bl->head->bi_next;
598 if (!bl->head)
599 bl->tail = NULL;
600
601 bio->bi_next = NULL;
602 }
603
604 return bio;
605}
606
607static inline struct bio *bio_list_get(struct bio_list *bl)
608{
609 struct bio *bio = bl->head;
610
611 bl->head = bl->tail = NULL;
612
613 return bio;
614}
615
507#if defined(CONFIG_BLK_DEV_INTEGRITY) 616#if defined(CONFIG_BLK_DEV_INTEGRITY)
508 617
509#define bip_vec_idx(bip, idx) (&(bip->bip_vec[(idx)])) 618#define bip_vec_idx(bip, idx) (&(bip->bip_vec[(idx)]))
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-24 10:24:46 -0500