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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>
18 lines
425 B
C
18 lines
425 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_COUNTERS_H
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#define _BCACHEFS_COUNTERS_H
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#include "bcachefs.h"
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#include "super-io.h"
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int bch2_sb_counters_to_cpu(struct bch_fs *);
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int bch2_sb_counters_from_cpu(struct bch_fs *);
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void bch2_fs_counters_exit(struct bch_fs *);
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int bch2_fs_counters_init(struct bch_fs *);
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extern const struct bch_sb_field_ops bch_sb_field_ops_counters;
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#endif // _BCACHEFS_COUNTERS_H
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