diff options
| author | Daniel Hill <daniel@gluo.nz> | 2022-03-15 11:36:33 +0300 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-23 00:09:32 +0300 |
| commit | 104c69745fdf7e5f8aa022f60bc9d568987bd8b8 (patch) | |
| tree | 09fc07cf3d1bbe991c7a586fbac4ee24c31d1b98 /fs/bcachefs/super.c | |
| parent | 1f93726e6347938343190913cb959623e67ecf78 (diff) | |
| download | linux-104c69745fdf7e5f8aa022f60bc9d568987bd8b8.tar.xz | |
bcachefs: Add persistent counters
This adds a new superblock field for persisting counters
and adds a sysfs interface in counters/ exposing these counters.
The superblock field is ignored by older versions letting us avoid
an on disk version bump.
Each sysfs file outputs a counter that tracks since filesystem
creation and a counter for the current mount session.
Signed-off-by: Daniel Hill <daniel@gluo.nz>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/super.c')
| -rw-r--r-- | fs/bcachefs/super.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/fs/bcachefs/super.c b/fs/bcachefs/super.c index 77b7bd61bf43..159d47d129a2 100644 --- a/fs/bcachefs/super.c +++ b/fs/bcachefs/super.c @@ -21,6 +21,7 @@ #include "checksum.h" #include "clock.h" #include "compress.h" +#include "counters.h" #include "debug.h" #include "disk_groups.h" #include "ec.h" @@ -78,6 +79,9 @@ static const struct kobj_type type ## _ktype = { \ static void bch2_fs_release(struct kobject *); static void bch2_dev_release(struct kobject *); +static void bch2_fs_counters_release(struct kobject *k) +{ +} static void bch2_fs_internal_release(struct kobject *k) { @@ -92,6 +96,7 @@ static void bch2_fs_time_stats_release(struct kobject *k) } KTYPE(bch2_fs); +KTYPE(bch2_fs_counters); KTYPE(bch2_fs_internal); KTYPE(bch2_fs_opts_dir); KTYPE(bch2_fs_time_stats); @@ -416,6 +421,7 @@ static void __bch2_fs_free(struct bch_fs *c) for (i = 0; i < BCH_TIME_STAT_NR; i++) bch2_time_stats_exit(&c->times[i]); + bch2_fs_counters_exit(c); bch2_fs_snapshots_exit(c); bch2_fs_quota_exit(c); bch2_fs_fsio_exit(c); @@ -500,6 +506,7 @@ void __bch2_fs_stop(struct bch_fs *c) bch2_fs_debug_exit(c); bch2_fs_chardev_exit(c); + kobject_put(&c->counters_kobj); kobject_put(&c->time_stats); kobject_put(&c->opts_dir); kobject_put(&c->internal); @@ -569,6 +576,7 @@ static int bch2_fs_online(struct bch_fs *c) kobject_add(&c->internal, &c->kobj, "internal") ?: kobject_add(&c->opts_dir, &c->kobj, "options") ?: kobject_add(&c->time_stats, &c->kobj, "time_stats") ?: + kobject_add(&c->counters_kobj, &c->kobj, "counters") ?: bch2_opts_create_sysfs_files(&c->opts_dir); if (ret) { bch_err(c, "error creating sysfs objects"); @@ -617,6 +625,7 @@ static struct bch_fs *bch2_fs_alloc(struct bch_sb *sb, struct bch_opts opts) kobject_init(&c->internal, &bch2_fs_internal_ktype); kobject_init(&c->opts_dir, &bch2_fs_opts_dir_ktype); kobject_init(&c->time_stats, &bch2_fs_time_stats_ktype); + kobject_init(&c->counters_kobj, &bch2_fs_counters_ktype); c->minor = -1; c->disk_sb.fs_sb = true; @@ -777,7 +786,8 @@ static struct bch_fs *bch2_fs_alloc(struct bch_sb *sb, struct bch_opts opts) bch2_fs_encryption_init(c) ?: bch2_fs_compress_init(c) ?: bch2_fs_ec_init(c) ?: - bch2_fs_fsio_init(c); + bch2_fs_fsio_init(c) ?: + bch2_fs_counters_init(c); if (ret) goto err; |