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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2#ifndef _BCACHE_FEATURES_H3#define _BCACHE_FEATURES_H4 5#include <linux/kernel.h>6#include <linux/types.h>7 8#include "bcache_ondisk.h"9 10#define BCH_FEATURE_COMPAT 011#define BCH_FEATURE_RO_COMPAT 112#define BCH_FEATURE_INCOMPAT 213#define BCH_FEATURE_TYPE_MASK 0x0314 15/* Feature set definition */16/* Incompat feature set */17/* 32bit bucket size, obsoleted */18#define BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET 0x000119/* real bucket size is (1 << bucket_size) */20#define BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE 0x000221 22#define BCH_FEATURE_COMPAT_SUPP 023#define BCH_FEATURE_RO_COMPAT_SUPP 024#define BCH_FEATURE_INCOMPAT_SUPP (BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET| \25 BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE)26 27#define BCH_HAS_COMPAT_FEATURE(sb, mask) \28 ((sb)->feature_compat & (mask))29#define BCH_HAS_RO_COMPAT_FEATURE(sb, mask) \30 ((sb)->feature_ro_compat & (mask))31#define BCH_HAS_INCOMPAT_FEATURE(sb, mask) \32 ((sb)->feature_incompat & (mask))33 34#define BCH_FEATURE_COMPAT_FUNCS(name, flagname) \35static inline int bch_has_feature_##name(struct cache_sb *sb) \36{ \37 if (sb->version < BCACHE_SB_VERSION_CDEV_WITH_FEATURES) \38 return 0; \39 return (((sb)->feature_compat & \40 BCH##_FEATURE_COMPAT_##flagname) != 0); \41} \42static inline void bch_set_feature_##name(struct cache_sb *sb) \43{ \44 (sb)->feature_compat |= \45 BCH##_FEATURE_COMPAT_##flagname; \46} \47static inline void bch_clear_feature_##name(struct cache_sb *sb) \48{ \49 (sb)->feature_compat &= \50 ~BCH##_FEATURE_COMPAT_##flagname; \51}52 53#define BCH_FEATURE_RO_COMPAT_FUNCS(name, flagname) \54static inline int bch_has_feature_##name(struct cache_sb *sb) \55{ \56 if (sb->version < BCACHE_SB_VERSION_CDEV_WITH_FEATURES) \57 return 0; \58 return (((sb)->feature_ro_compat & \59 BCH##_FEATURE_RO_COMPAT_##flagname) != 0); \60} \61static inline void bch_set_feature_##name(struct cache_sb *sb) \62{ \63 (sb)->feature_ro_compat |= \64 BCH##_FEATURE_RO_COMPAT_##flagname; \65} \66static inline void bch_clear_feature_##name(struct cache_sb *sb) \67{ \68 (sb)->feature_ro_compat &= \69 ~BCH##_FEATURE_RO_COMPAT_##flagname; \70}71 72#define BCH_FEATURE_INCOMPAT_FUNCS(name, flagname) \73static inline int bch_has_feature_##name(struct cache_sb *sb) \74{ \75 if (sb->version < BCACHE_SB_VERSION_CDEV_WITH_FEATURES) \76 return 0; \77 return (((sb)->feature_incompat & \78 BCH##_FEATURE_INCOMPAT_##flagname) != 0); \79} \80static inline void bch_set_feature_##name(struct cache_sb *sb) \81{ \82 (sb)->feature_incompat |= \83 BCH##_FEATURE_INCOMPAT_##flagname; \84} \85static inline void bch_clear_feature_##name(struct cache_sb *sb) \86{ \87 (sb)->feature_incompat &= \88 ~BCH##_FEATURE_INCOMPAT_##flagname; \89}90 91BCH_FEATURE_INCOMPAT_FUNCS(obso_large_bucket, OBSO_LARGE_BUCKET);92BCH_FEATURE_INCOMPAT_FUNCS(large_bucket, LOG_LARGE_BUCKET_SIZE);93 94static inline bool bch_has_unknown_compat_features(struct cache_sb *sb)95{96 return ((sb->feature_compat & ~BCH_FEATURE_COMPAT_SUPP) != 0);97}98 99static inline bool bch_has_unknown_ro_compat_features(struct cache_sb *sb)100{101 return ((sb->feature_ro_compat & ~BCH_FEATURE_RO_COMPAT_SUPP) != 0);102}103 104static inline bool bch_has_unknown_incompat_features(struct cache_sb *sb)105{106 return ((sb->feature_incompat & ~BCH_FEATURE_INCOMPAT_SUPP) != 0);107}108 109int bch_print_cache_set_feature_compat(struct cache_set *c, char *buf, int size);110int bch_print_cache_set_feature_ro_compat(struct cache_set *c, char *buf, int size);111int bch_print_cache_set_feature_incompat(struct cache_set *c, char *buf, int size);112 113#endif114