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-rw-r--r--include/linux/raid/raid1.h134
1 files changed, 0 insertions, 134 deletions
diff --git a/include/linux/raid/raid1.h b/include/linux/raid/raid1.h
deleted file mode 100644
index 0a9ba7c3302e..000000000000
--- a/include/linux/raid/raid1.h
+++ /dev/null
@@ -1,134 +0,0 @@
1#ifndef _RAID1_H
2#define _RAID1_H
3
4#include <linux/raid/md.h>
5
6typedef struct mirror_info mirror_info_t;
7
8struct mirror_info {
9 mdk_rdev_t *rdev;
10 sector_t head_position;
11};
12
13/*
14 * memory pools need a pointer to the mddev, so they can force an unplug
15 * when memory is tight, and a count of the number of drives that the
16 * pool was allocated for, so they know how much to allocate and free.
17 * mddev->raid_disks cannot be used, as it can change while a pool is active
18 * These two datums are stored in a kmalloced struct.
19 */
20
21struct pool_info {
22 mddev_t *mddev;
23 int raid_disks;
24};
25
26
27typedef struct r1bio_s r1bio_t;
28
29struct r1_private_data_s {
30 mddev_t *mddev;
31 mirror_info_t *mirrors;
32 int raid_disks;
33 int last_used;
34 sector_t next_seq_sect;
35 spinlock_t device_lock;
36
37 struct list_head retry_list;
38 /* queue pending writes and submit them on unplug */
39 struct bio_list pending_bio_list;
40 /* queue of writes that have been unplugged */
41 struct bio_list flushing_bio_list;
42
43 /* for use when syncing mirrors: */
44
45 spinlock_t resync_lock;
46 int nr_pending;
47 int nr_waiting;
48 int nr_queued;
49 int barrier;
50 sector_t next_resync;
51 int fullsync; /* set to 1 if a full sync is needed,
52 * (fresh device added).
53 * Cleared when a sync completes.
54 */
55
56 wait_queue_head_t wait_barrier;
57
58 struct pool_info *poolinfo;
59
60 struct page *tmppage;
61
62 mempool_t *r1bio_pool;
63 mempool_t *r1buf_pool;
64};
65
66typedef struct r1_private_data_s conf_t;
67
68/*
69 * this is the only point in the RAID code where we violate
70 * C type safety. mddev->private is an 'opaque' pointer.
71 */
72#define mddev_to_conf(mddev) ((conf_t *) mddev->private)
73
74/*
75 * this is our 'private' RAID1 bio.
76 *
77 * it contains information about what kind of IO operations were started
78 * for this RAID1 operation, and about their status:
79 */
80
81struct r1bio_s {
82 atomic_t remaining; /* 'have we finished' count,
83 * used from IRQ handlers
84 */
85 atomic_t behind_remaining; /* number of write-behind ios remaining
86 * in this BehindIO request
87 */
88 sector_t sector;
89 int sectors;
90 unsigned long state;
91 mddev_t *mddev;
92 /*
93 * original bio going to /dev/mdx
94 */
95 struct bio *master_bio;
96 /*
97 * if the IO is in READ direction, then this is where we read
98 */
99 int read_disk;
100
101 struct list_head retry_list;
102 struct bitmap_update *bitmap_update;
103 /*
104 * if the IO is in WRITE direction, then multiple bios are used.
105 * We choose the number when they are allocated.
106 */
107 struct bio *bios[0];
108 /* DO NOT PUT ANY NEW FIELDS HERE - bios array is contiguously alloced*/
109};
110
111/* when we get a read error on a read-only array, we redirect to another
112 * device without failing the first device, or trying to over-write to
113 * correct the read error. To keep track of bad blocks on a per-bio
114 * level, we store IO_BLOCKED in the appropriate 'bios' pointer
115 */
116#define IO_BLOCKED ((struct bio*)1)
117
118/* bits for r1bio.state */
119#define R1BIO_Uptodate 0
120#define R1BIO_IsSync 1
121#define R1BIO_Degraded 2
122#define R1BIO_BehindIO 3
123#define R1BIO_Barrier 4
124#define R1BIO_BarrierRetry 5
125/* For write-behind requests, we call bi_end_io when
126 * the last non-write-behind device completes, providing
127 * any write was successful. Otherwise we call when
128 * any write-behind write succeeds, otherwise we call
129 * with failure when last write completes (and all failed).
130 * Record that bi_end_io was called with this flag...
131 */
132#define R1BIO_Returned 6
133
134#endif