volumes.h (3c09ec59cdea5b132212d97154d625fd34e436dd) volumes.h (5b316468983dfa9473ff0f1c42e4e30b4c267141)
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2007 Oracle. All rights reserved.
4 */
5
6#ifndef BTRFS_VOLUMES_H
7#define BTRFS_VOLUMES_H
8

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47
48#define BTRFS_DEV_STATE_WRITEABLE (0)
49#define BTRFS_DEV_STATE_IN_FS_METADATA (1)
50#define BTRFS_DEV_STATE_MISSING (2)
51#define BTRFS_DEV_STATE_REPLACE_TGT (3)
52#define BTRFS_DEV_STATE_FLUSH_SENT (4)
53#define BTRFS_DEV_STATE_NO_READA (5)
54
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2007 Oracle. All rights reserved.
4 */
5
6#ifndef BTRFS_VOLUMES_H
7#define BTRFS_VOLUMES_H
8

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47
48#define BTRFS_DEV_STATE_WRITEABLE (0)
49#define BTRFS_DEV_STATE_IN_FS_METADATA (1)
50#define BTRFS_DEV_STATE_MISSING (2)
51#define BTRFS_DEV_STATE_REPLACE_TGT (3)
52#define BTRFS_DEV_STATE_FLUSH_SENT (4)
53#define BTRFS_DEV_STATE_NO_READA (5)
54
55struct btrfs_zoned_device_info;
56
55struct btrfs_device {
56 struct list_head dev_list; /* device_list_mutex */
57 struct list_head dev_alloc_list; /* chunk mutex */
58 struct list_head post_commit_list; /* chunk mutex */
59 struct btrfs_fs_devices *fs_devices;
60 struct btrfs_fs_info *fs_info;
61
62 struct rcu_string __rcu *name;
63
64 u64 generation;
65
66 struct block_device *bdev;
67
57struct btrfs_device {
58 struct list_head dev_list; /* device_list_mutex */
59 struct list_head dev_alloc_list; /* chunk mutex */
60 struct list_head post_commit_list; /* chunk mutex */
61 struct btrfs_fs_devices *fs_devices;
62 struct btrfs_fs_info *fs_info;
63
64 struct rcu_string __rcu *name;
65
66 u64 generation;
67
68 struct block_device *bdev;
69
70 struct btrfs_zoned_device_info *zone_info;
71
68 /* the mode sent to blkdev_get */
69 fmode_t mode;
70
71 unsigned long dev_state;
72 blk_status_t last_flush_error;
73
74#ifdef __BTRFS_NEED_DEVICE_DATA_ORDERED
75 /* A seqcount_t with associated chunk_mutex (for lockdep) */

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206BTRFS_DEVICE_GETSET_FUNCS(total_bytes);
207BTRFS_DEVICE_GETSET_FUNCS(disk_total_bytes);
208BTRFS_DEVICE_GETSET_FUNCS(bytes_used);
209
210enum btrfs_chunk_allocation_policy {
211 BTRFS_CHUNK_ALLOC_REGULAR,
212};
213
72 /* the mode sent to blkdev_get */
73 fmode_t mode;
74
75 unsigned long dev_state;
76 blk_status_t last_flush_error;
77
78#ifdef __BTRFS_NEED_DEVICE_DATA_ORDERED
79 /* A seqcount_t with associated chunk_mutex (for lockdep) */

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210BTRFS_DEVICE_GETSET_FUNCS(total_bytes);
211BTRFS_DEVICE_GETSET_FUNCS(disk_total_bytes);
212BTRFS_DEVICE_GETSET_FUNCS(bytes_used);
213
214enum btrfs_chunk_allocation_policy {
215 BTRFS_CHUNK_ALLOC_REGULAR,
216};
217
218/*
219 * Read policies for mirrored block group profiles, read picks the stripe based
220 * on these policies.
221 */
222enum btrfs_read_policy {
223 /* Use process PID to choose the stripe */
224 BTRFS_READ_POLICY_PID,
225 BTRFS_NR_READ_POLICY,
226};
227
214struct btrfs_fs_devices {
215 u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */
216 u8 metadata_uuid[BTRFS_FSID_SIZE];
217 bool fsid_change;
218 struct list_head fs_list;
219
220 u64 num_devices;
221 u64 open_devices;

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259 struct btrfs_fs_info *fs_info;
260 /* sysfs kobjects */
261 struct kobject fsid_kobj;
262 struct kobject *devices_kobj;
263 struct kobject *devinfo_kobj;
264 struct completion kobj_unregister;
265
266 enum btrfs_chunk_allocation_policy chunk_alloc_policy;
228struct btrfs_fs_devices {
229 u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */
230 u8 metadata_uuid[BTRFS_FSID_SIZE];
231 bool fsid_change;
232 struct list_head fs_list;
233
234 u64 num_devices;
235 u64 open_devices;

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273 struct btrfs_fs_info *fs_info;
274 /* sysfs kobjects */
275 struct kobject fsid_kobj;
276 struct kobject *devices_kobj;
277 struct kobject *devinfo_kobj;
278 struct completion kobj_unregister;
279
280 enum btrfs_chunk_allocation_policy chunk_alloc_policy;
281
282 /* Policy used to read the mirrored stripes */
283 enum btrfs_read_policy read_policy;
267};
268
269#define BTRFS_BIO_INLINE_CSUM_SIZE 64
270
271#define BTRFS_MAX_DEVS(info) ((BTRFS_MAX_ITEM_SIZE(info) \
272 - sizeof(struct btrfs_chunk)) \
273 / sizeof(struct btrfs_stripe) + 1)
274

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431blk_status_t btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio,
432 int mirror_num);
433int btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
434 fmode_t flags, void *holder);
435struct btrfs_device *btrfs_scan_one_device(const char *path,
436 fmode_t flags, void *holder);
437int btrfs_forget_devices(const char *path);
438void btrfs_close_devices(struct btrfs_fs_devices *fs_devices);
284};
285
286#define BTRFS_BIO_INLINE_CSUM_SIZE 64
287
288#define BTRFS_MAX_DEVS(info) ((BTRFS_MAX_ITEM_SIZE(info) \
289 - sizeof(struct btrfs_chunk)) \
290 / sizeof(struct btrfs_stripe) + 1)
291

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448blk_status_t btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio,
449 int mirror_num);
450int btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
451 fmode_t flags, void *holder);
452struct btrfs_device *btrfs_scan_one_device(const char *path,
453 fmode_t flags, void *holder);
454int btrfs_forget_devices(const char *path);
455void btrfs_close_devices(struct btrfs_fs_devices *fs_devices);
439void btrfs_free_extra_devids(struct btrfs_fs_devices *fs_devices, int step);
456void btrfs_free_extra_devids(struct btrfs_fs_devices *fs_devices);
440void btrfs_assign_next_active_device(struct btrfs_device *device,
441 struct btrfs_device *this_dev);
442struct btrfs_device *btrfs_find_device_by_devspec(struct btrfs_fs_info *fs_info,
443 u64 devid,
444 const char *devpath);
445struct btrfs_device *btrfs_alloc_device(struct btrfs_fs_info *fs_info,
446 const u64 *devid,
447 const u8 *uuid);
448void btrfs_free_device(struct btrfs_device *device);
449int btrfs_rm_device(struct btrfs_fs_info *fs_info,
450 const char *device_path, u64 devid);
451void __exit btrfs_cleanup_fs_uuids(void);
452int btrfs_num_copies(struct btrfs_fs_info *fs_info, u64 logical, u64 len);
453int btrfs_grow_device(struct btrfs_trans_handle *trans,
454 struct btrfs_device *device, u64 new_size);
455struct btrfs_device *btrfs_find_device(struct btrfs_fs_devices *fs_devices,
457void btrfs_assign_next_active_device(struct btrfs_device *device,
458 struct btrfs_device *this_dev);
459struct btrfs_device *btrfs_find_device_by_devspec(struct btrfs_fs_info *fs_info,
460 u64 devid,
461 const char *devpath);
462struct btrfs_device *btrfs_alloc_device(struct btrfs_fs_info *fs_info,
463 const u64 *devid,
464 const u8 *uuid);
465void btrfs_free_device(struct btrfs_device *device);
466int btrfs_rm_device(struct btrfs_fs_info *fs_info,
467 const char *device_path, u64 devid);
468void __exit btrfs_cleanup_fs_uuids(void);
469int btrfs_num_copies(struct btrfs_fs_info *fs_info, u64 logical, u64 len);
470int btrfs_grow_device(struct btrfs_trans_handle *trans,
471 struct btrfs_device *device, u64 new_size);
472struct btrfs_device *btrfs_find_device(struct btrfs_fs_devices *fs_devices,
456 u64 devid, u8 *uuid, u8 *fsid, bool seed);
473 u64 devid, u8 *uuid, u8 *fsid);
457int btrfs_shrink_device(struct btrfs_device *device, u64 new_size);
458int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *path);
459int btrfs_balance(struct btrfs_fs_info *fs_info,
460 struct btrfs_balance_control *bctl,
461 struct btrfs_ioctl_balance_args *bargs);
462void btrfs_describe_block_groups(u64 flags, char *buf, u32 size_buf);
463int btrfs_resume_balance_async(struct btrfs_fs_info *fs_info);
464int btrfs_recover_balance(struct btrfs_fs_info *fs_info);

--- 118 unchanged lines hidden --- 		474int btrfs_shrink_device(struct btrfs_device *device, u64 new_size);
475int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *path);
476int btrfs_balance(struct btrfs_fs_info *fs_info,
477 struct btrfs_balance_control *bctl,
478 struct btrfs_ioctl_balance_args *bargs);
479void btrfs_describe_block_groups(u64 flags, char *buf, u32 size_buf);
480int btrfs_resume_balance_async(struct btrfs_fs_info *fs_info);
481int btrfs_recover_balance(struct btrfs_fs_info *fs_info);

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