mirror of
https://github.com/torvalds/linux.git
synced 2024-11-25 13:41:51 +00:00
e677179b35
We're going to be using bch2_target_to_text() -> bch2_disk_path_to_text() from bch2_bkey_ptrs_to_text() and bch2_bkey_ptrs_invalid(), which can be called in any context. This patch adds the actual label to bch_disk_group_cpu so that it can be used by bch2_disk_path_to_text, and splits out bch2_disk_path_to_text() into two variants - like the previous patch, one for when we have a running filesystem and another for when we only have a superblock. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
112 lines
2.9 KiB
C
112 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _BCACHEFS_DISK_GROUPS_H
|
|
#define _BCACHEFS_DISK_GROUPS_H
|
|
|
|
#include "disk_groups_types.h"
|
|
|
|
extern const struct bch_sb_field_ops bch_sb_field_ops_disk_groups;
|
|
|
|
static inline unsigned disk_groups_nr(struct bch_sb_field_disk_groups *groups)
|
|
{
|
|
return groups
|
|
? (vstruct_end(&groups->field) -
|
|
(void *) &groups->entries[0]) / sizeof(struct bch_disk_group)
|
|
: 0;
|
|
}
|
|
|
|
struct target {
|
|
enum {
|
|
TARGET_NULL,
|
|
TARGET_DEV,
|
|
TARGET_GROUP,
|
|
} type;
|
|
union {
|
|
unsigned dev;
|
|
unsigned group;
|
|
};
|
|
};
|
|
|
|
#define TARGET_DEV_START 1
|
|
#define TARGET_GROUP_START (256 + TARGET_DEV_START)
|
|
|
|
static inline u16 dev_to_target(unsigned dev)
|
|
{
|
|
return TARGET_DEV_START + dev;
|
|
}
|
|
|
|
static inline u16 group_to_target(unsigned group)
|
|
{
|
|
return TARGET_GROUP_START + group;
|
|
}
|
|
|
|
static inline struct target target_decode(unsigned target)
|
|
{
|
|
if (target >= TARGET_GROUP_START)
|
|
return (struct target) {
|
|
.type = TARGET_GROUP,
|
|
.group = target - TARGET_GROUP_START
|
|
};
|
|
|
|
if (target >= TARGET_DEV_START)
|
|
return (struct target) {
|
|
.type = TARGET_DEV,
|
|
.group = target - TARGET_DEV_START
|
|
};
|
|
|
|
return (struct target) { .type = TARGET_NULL };
|
|
}
|
|
|
|
const struct bch_devs_mask *bch2_target_to_mask(struct bch_fs *, unsigned);
|
|
|
|
static inline struct bch_devs_mask target_rw_devs(struct bch_fs *c,
|
|
enum bch_data_type data_type,
|
|
u16 target)
|
|
{
|
|
struct bch_devs_mask devs = c->rw_devs[data_type];
|
|
const struct bch_devs_mask *t = bch2_target_to_mask(c, target);
|
|
|
|
if (t)
|
|
bitmap_and(devs.d, devs.d, t->d, BCH_SB_MEMBERS_MAX);
|
|
return devs;
|
|
}
|
|
|
|
static inline bool bch2_target_accepts_data(struct bch_fs *c,
|
|
enum bch_data_type data_type,
|
|
u16 target)
|
|
{
|
|
struct bch_devs_mask rw_devs = target_rw_devs(c, data_type, target);
|
|
return !bitmap_empty(rw_devs.d, BCH_SB_MEMBERS_MAX);
|
|
}
|
|
|
|
bool bch2_dev_in_target(struct bch_fs *, unsigned, unsigned);
|
|
|
|
int bch2_disk_path_find(struct bch_sb_handle *, const char *);
|
|
|
|
/* Exported for userspace bcachefs-tools: */
|
|
int bch2_disk_path_find_or_create(struct bch_sb_handle *, const char *);
|
|
|
|
void bch2_disk_path_to_text(struct printbuf *, struct bch_fs *, unsigned);
|
|
void bch2_disk_path_to_text_sb(struct printbuf *, struct bch_sb *, unsigned);
|
|
|
|
void bch2_target_to_text(struct printbuf *out, struct bch_fs *, unsigned);
|
|
|
|
int bch2_opt_target_parse(struct bch_fs *, const char *, u64 *, struct printbuf *);
|
|
void bch2_opt_target_to_text(struct printbuf *, struct bch_fs *, struct bch_sb *, u64);
|
|
|
|
#define bch2_opt_target (struct bch_opt_fn) { \
|
|
.parse = bch2_opt_target_parse, \
|
|
.to_text = bch2_opt_target_to_text, \
|
|
}
|
|
|
|
int bch2_sb_disk_groups_to_cpu(struct bch_fs *);
|
|
|
|
int __bch2_dev_group_set(struct bch_fs *, struct bch_dev *, const char *);
|
|
int bch2_dev_group_set(struct bch_fs *, struct bch_dev *, const char *);
|
|
|
|
const char *bch2_sb_validate_disk_groups(struct bch_sb *,
|
|
struct bch_sb_field *);
|
|
|
|
void bch2_disk_groups_to_text(struct printbuf *, struct bch_fs *);
|
|
|
|
#endif /* _BCACHEFS_DISK_GROUPS_H */
|