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104c69745f
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>
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_SYSFS_H_
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#define _BCACHEFS_SYSFS_H_
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#include <linux/sysfs.h>
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#ifndef NO_BCACHEFS_SYSFS
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struct attribute;
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struct sysfs_ops;
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extern struct attribute *bch2_fs_files[];
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extern struct attribute *bch2_fs_counters_files[];
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extern struct attribute *bch2_fs_internal_files[];
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extern struct attribute *bch2_fs_opts_dir_files[];
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extern struct attribute *bch2_fs_time_stats_files[];
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extern struct attribute *bch2_dev_files[];
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extern const struct sysfs_ops bch2_fs_sysfs_ops;
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extern const struct sysfs_ops bch2_fs_counters_sysfs_ops;
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extern const struct sysfs_ops bch2_fs_internal_sysfs_ops;
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extern const struct sysfs_ops bch2_fs_opts_dir_sysfs_ops;
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extern const struct sysfs_ops bch2_fs_time_stats_sysfs_ops;
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extern const struct sysfs_ops bch2_dev_sysfs_ops;
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int bch2_opts_create_sysfs_files(struct kobject *);
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#else
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static struct attribute *bch2_fs_files[] = {};
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static struct attribute *bch2_fs_counters_files[] = {};
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static struct attribute *bch2_fs_internal_files[] = {};
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static struct attribute *bch2_fs_opts_dir_files[] = {};
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static struct attribute *bch2_fs_time_stats_files[] = {};
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static struct attribute *bch2_dev_files[] = {};
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static const struct sysfs_ops bch2_fs_sysfs_ops;
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static const struct sysfs_ops bch2_fs_counters_sysfs_ops;
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static const struct sysfs_ops bch2_fs_internal_sysfs_ops;
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static const struct sysfs_ops bch2_fs_opts_dir_sysfs_ops;
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static const struct sysfs_ops bch2_fs_time_stats_sysfs_ops;
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static const struct sysfs_ops bch2_dev_sysfs_ops;
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static inline int bch2_opts_create_sysfs_files(struct kobject *kobj) { return 0; }
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#endif /* NO_BCACHEFS_SYSFS */
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#endif /* _BCACHEFS_SYSFS_H_ */
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