+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _BCACHEFS_EXTENTS_H
-#define _BCACHEFS_EXTENTS_H
-
-#include "bcachefs.h"
-#include "bkey.h"
-#include "extents_types.h"
-
-struct bch_fs;
-struct btree_trans;
-enum bkey_invalid_flags;
-
-/* extent entries: */
-
-#define extent_entry_last(_e) \
- ((typeof(&(_e).v->start[0])) bkey_val_end(_e))
-
-#define entry_to_ptr(_entry) \
-({ \
- EBUG_ON((_entry) && !extent_entry_is_ptr(_entry)); \
- \
- __builtin_choose_expr( \
- type_is_exact(_entry, const union bch_extent_entry *), \
- (const struct bch_extent_ptr *) (_entry), \
- (struct bch_extent_ptr *) (_entry)); \
-})
-
-/* downcast, preserves const */
-#define to_entry(_entry) \
-({ \
- BUILD_BUG_ON(!type_is(_entry, union bch_extent_crc *) && \
- !type_is(_entry, struct bch_extent_ptr *) && \
- !type_is(_entry, struct bch_extent_stripe_ptr *)); \
- \
- __builtin_choose_expr( \
- (type_is_exact(_entry, const union bch_extent_crc *) || \
- type_is_exact(_entry, const struct bch_extent_ptr *) ||\
- type_is_exact(_entry, const struct bch_extent_stripe_ptr *)),\
- (const union bch_extent_entry *) (_entry), \
- (union bch_extent_entry *) (_entry)); \
-})
-
-#define extent_entry_next(_entry) \
- ((typeof(_entry)) ((void *) (_entry) + extent_entry_bytes(_entry)))
-
-static inline unsigned
-__extent_entry_type(const union bch_extent_entry *e)
-{
- return e->type ? __ffs(e->type) : BCH_EXTENT_ENTRY_MAX;
-}
-
-static inline enum bch_extent_entry_type
-extent_entry_type(const union bch_extent_entry *e)
-{
- int ret = __ffs(e->type);
-
- EBUG_ON(ret < 0 || ret >= BCH_EXTENT_ENTRY_MAX);
-
- return ret;
-}
-
-static inline size_t extent_entry_bytes(const union bch_extent_entry *entry)
-{
- switch (extent_entry_type(entry)) {
-#define x(f, n) \
- case BCH_EXTENT_ENTRY_##f: \
- return sizeof(struct bch_extent_##f);
- BCH_EXTENT_ENTRY_TYPES()
-#undef x
- default:
- BUG();
- }
-}
-
-static inline size_t extent_entry_u64s(const union bch_extent_entry *entry)
-{
- return extent_entry_bytes(entry) / sizeof(u64);
-}
-
-static inline void __extent_entry_insert(struct bkey_i *k,
- union bch_extent_entry *dst,
- union bch_extent_entry *new)
-{
- union bch_extent_entry *end = bkey_val_end(bkey_i_to_s(k));
-
- memmove_u64s_up_small((u64 *) dst + extent_entry_u64s(new),
- dst, (u64 *) end - (u64 *) dst);
- k->k.u64s += extent_entry_u64s(new);
- memcpy_u64s_small(dst, new, extent_entry_u64s(new));
-}
-
-static inline void extent_entry_drop(struct bkey_s k, union bch_extent_entry *entry)
-{
- union bch_extent_entry *next = extent_entry_next(entry);
-
- /* stripes have ptrs, but their layout doesn't work with this code */
- BUG_ON(k.k->type == KEY_TYPE_stripe);
-
- memmove_u64s_down(entry, next,
- (u64 *) bkey_val_end(k) - (u64 *) next);
- k.k->u64s -= (u64 *) next - (u64 *) entry;
-}
-
-static inline bool extent_entry_is_ptr(const union bch_extent_entry *e)
-{
- return extent_entry_type(e) == BCH_EXTENT_ENTRY_ptr;
-}
-
-static inline bool extent_entry_is_stripe_ptr(const union bch_extent_entry *e)
-{
- return extent_entry_type(e) == BCH_EXTENT_ENTRY_stripe_ptr;
-}
-
-static inline bool extent_entry_is_crc(const union bch_extent_entry *e)
-{
- switch (extent_entry_type(e)) {
- case BCH_EXTENT_ENTRY_crc32:
- case BCH_EXTENT_ENTRY_crc64:
- case BCH_EXTENT_ENTRY_crc128:
- return true;
- default:
- return false;
- }
-}
-
-union bch_extent_crc {
- u8 type;
- struct bch_extent_crc32 crc32;
- struct bch_extent_crc64 crc64;
- struct bch_extent_crc128 crc128;
-};
-
-#define __entry_to_crc(_entry) \
- __builtin_choose_expr( \
- type_is_exact(_entry, const union bch_extent_entry *), \
- (const union bch_extent_crc *) (_entry), \
- (union bch_extent_crc *) (_entry))
-
-#define entry_to_crc(_entry) \
-({ \
- EBUG_ON((_entry) && !extent_entry_is_crc(_entry)); \
- \
- __entry_to_crc(_entry); \
-})
-
-static inline struct bch_extent_crc_unpacked
-bch2_extent_crc_unpack(const struct bkey *k, const union bch_extent_crc *crc)
-{
-#define common_fields(_crc) \
- .csum_type = _crc.csum_type, \
- .compression_type = _crc.compression_type, \
- .compressed_size = _crc._compressed_size + 1, \
- .uncompressed_size = _crc._uncompressed_size + 1, \
- .offset = _crc.offset, \
- .live_size = k->size
-
- if (!crc)
- return (struct bch_extent_crc_unpacked) {
- .compressed_size = k->size,
- .uncompressed_size = k->size,
- .live_size = k->size,
- };
-
- switch (extent_entry_type(to_entry(crc))) {
- case BCH_EXTENT_ENTRY_crc32: {
- struct bch_extent_crc_unpacked ret = (struct bch_extent_crc_unpacked) {
- common_fields(crc->crc32),
- };
-
- *((__le32 *) &ret.csum.lo) = (__le32 __force) crc->crc32.csum;
- return ret;
- }
- case BCH_EXTENT_ENTRY_crc64: {
- struct bch_extent_crc_unpacked ret = (struct bch_extent_crc_unpacked) {
- common_fields(crc->crc64),
- .nonce = crc->crc64.nonce,
- .csum.lo = (__force __le64) crc->crc64.csum_lo,
- };
-
- *((__le16 *) &ret.csum.hi) = (__le16 __force) crc->crc64.csum_hi;
-
- return ret;
- }
- case BCH_EXTENT_ENTRY_crc128: {
- struct bch_extent_crc_unpacked ret = (struct bch_extent_crc_unpacked) {
- common_fields(crc->crc128),
- .nonce = crc->crc128.nonce,
- .csum = crc->crc128.csum,
- };
-
- return ret;
- }
- default:
- BUG();
- }
-#undef common_fields
-}
-
-static inline bool crc_is_compressed(struct bch_extent_crc_unpacked crc)
-{
- return (crc.compression_type != BCH_COMPRESSION_TYPE_none &&
- crc.compression_type != BCH_COMPRESSION_TYPE_incompressible);
-}
-
-static inline bool crc_is_encoded(struct bch_extent_crc_unpacked crc)
-{
- return crc.csum_type != BCH_CSUM_none || crc_is_compressed(crc);
-}
-
-/* bkey_ptrs: generically over any key type that has ptrs */
-
-struct bkey_ptrs_c {
- const union bch_extent_entry *start;
- const union bch_extent_entry *end;
-};
-
-struct bkey_ptrs {
- union bch_extent_entry *start;
- union bch_extent_entry *end;
-};
-
-static inline struct bkey_ptrs_c bch2_bkey_ptrs_c(struct bkey_s_c k)
-{
- switch (k.k->type) {
- case KEY_TYPE_btree_ptr: {
- struct bkey_s_c_btree_ptr e = bkey_s_c_to_btree_ptr(k);
-
- return (struct bkey_ptrs_c) {
- to_entry(&e.v->start[0]),
- to_entry(extent_entry_last(e))
- };
- }
- case KEY_TYPE_extent: {
- struct bkey_s_c_extent e = bkey_s_c_to_extent(k);
-
- return (struct bkey_ptrs_c) {
- e.v->start,
- extent_entry_last(e)
- };
- }
- case KEY_TYPE_stripe: {
- struct bkey_s_c_stripe s = bkey_s_c_to_stripe(k);
-
- return (struct bkey_ptrs_c) {
- to_entry(&s.v->ptrs[0]),
- to_entry(&s.v->ptrs[s.v->nr_blocks]),
- };
- }
- case KEY_TYPE_reflink_v: {
- struct bkey_s_c_reflink_v r = bkey_s_c_to_reflink_v(k);
-
- return (struct bkey_ptrs_c) {
- r.v->start,
- bkey_val_end(r),
- };
- }
- case KEY_TYPE_btree_ptr_v2: {
- struct bkey_s_c_btree_ptr_v2 e = bkey_s_c_to_btree_ptr_v2(k);
-
- return (struct bkey_ptrs_c) {
- to_entry(&e.v->start[0]),
- to_entry(extent_entry_last(e))
- };
- }
- default:
- return (struct bkey_ptrs_c) { NULL, NULL };
- }
-}
-
-static inline struct bkey_ptrs bch2_bkey_ptrs(struct bkey_s k)
-{
- struct bkey_ptrs_c p = bch2_bkey_ptrs_c(k.s_c);
-
- return (struct bkey_ptrs) {
- (void *) p.start,
- (void *) p.end
- };
-}
-
-#define __bkey_extent_entry_for_each_from(_start, _end, _entry) \
- for ((_entry) = (_start); \
- (_entry) < (_end); \
- (_entry) = extent_entry_next(_entry))
-
-#define __bkey_ptr_next(_ptr, _end) \
-({ \
- typeof(_end) _entry; \
- \
- __bkey_extent_entry_for_each_from(to_entry(_ptr), _end, _entry) \
- if (extent_entry_is_ptr(_entry)) \
- break; \
- \
- _entry < (_end) ? entry_to_ptr(_entry) : NULL; \
-})
-
-#define bkey_extent_entry_for_each_from(_p, _entry, _start) \
- __bkey_extent_entry_for_each_from(_start, (_p).end, _entry)
-
-#define bkey_extent_entry_for_each(_p, _entry) \
- bkey_extent_entry_for_each_from(_p, _entry, _p.start)
-
-#define __bkey_for_each_ptr(_start, _end, _ptr) \
- for (typeof(_start) (_ptr) = (_start); \
- ((_ptr) = __bkey_ptr_next(_ptr, _end)); \
- (_ptr)++)
-
-#define bkey_ptr_next(_p, _ptr) \
- __bkey_ptr_next(_ptr, (_p).end)
-
-#define bkey_for_each_ptr(_p, _ptr) \
- __bkey_for_each_ptr(&(_p).start->ptr, (_p).end, _ptr)
-
-#define __bkey_ptr_next_decode(_k, _end, _ptr, _entry) \
-({ \
- __label__ out; \
- \
- (_ptr).idx = 0; \
- (_ptr).has_ec = false; \
- \
- __bkey_extent_entry_for_each_from(_entry, _end, _entry) \
- switch (extent_entry_type(_entry)) { \
- case BCH_EXTENT_ENTRY_ptr: \
- (_ptr).ptr = _entry->ptr; \
- goto out; \
- case BCH_EXTENT_ENTRY_crc32: \
- case BCH_EXTENT_ENTRY_crc64: \
- case BCH_EXTENT_ENTRY_crc128: \
- (_ptr).crc = bch2_extent_crc_unpack(_k, \
- entry_to_crc(_entry)); \
- break; \
- case BCH_EXTENT_ENTRY_stripe_ptr: \
- (_ptr).ec = _entry->stripe_ptr; \
- (_ptr).has_ec = true; \
- break; \
- default: \
- /* nothing */ \
- break; \
- } \
-out: \
- _entry < (_end); \
-})
-
-#define __bkey_for_each_ptr_decode(_k, _start, _end, _ptr, _entry) \
- for ((_ptr).crc = bch2_extent_crc_unpack(_k, NULL), \
- (_entry) = _start; \
- __bkey_ptr_next_decode(_k, _end, _ptr, _entry); \
- (_entry) = extent_entry_next(_entry))
-
-#define bkey_for_each_ptr_decode(_k, _p, _ptr, _entry) \
- __bkey_for_each_ptr_decode(_k, (_p).start, (_p).end, \
- _ptr, _entry)
-
-#define bkey_crc_next(_k, _start, _end, _crc, _iter) \
-({ \
- __bkey_extent_entry_for_each_from(_iter, _end, _iter) \
- if (extent_entry_is_crc(_iter)) { \
- (_crc) = bch2_extent_crc_unpack(_k, \
- entry_to_crc(_iter)); \
- break; \
- } \
- \
- (_iter) < (_end); \
-})
-
-#define __bkey_for_each_crc(_k, _start, _end, _crc, _iter) \
- for ((_crc) = bch2_extent_crc_unpack(_k, NULL), \
- (_iter) = (_start); \
- bkey_crc_next(_k, _start, _end, _crc, _iter); \
- (_iter) = extent_entry_next(_iter))
-
-#define bkey_for_each_crc(_k, _p, _crc, _iter) \
- __bkey_for_each_crc(_k, (_p).start, (_p).end, _crc, _iter)
-
-/* Iterate over pointers in KEY_TYPE_extent: */
-
-#define extent_for_each_entry_from(_e, _entry, _start) \
- __bkey_extent_entry_for_each_from(_start, \
- extent_entry_last(_e), _entry)
-
-#define extent_for_each_entry(_e, _entry) \
- extent_for_each_entry_from(_e, _entry, (_e).v->start)
-
-#define extent_ptr_next(_e, _ptr) \
- __bkey_ptr_next(_ptr, extent_entry_last(_e))
-
-#define extent_for_each_ptr(_e, _ptr) \
- __bkey_for_each_ptr(&(_e).v->start->ptr, extent_entry_last(_e), _ptr)
-
-#define extent_for_each_ptr_decode(_e, _ptr, _entry) \
- __bkey_for_each_ptr_decode((_e).k, (_e).v->start, \
- extent_entry_last(_e), _ptr, _entry)
-
-/* utility code common to all keys with pointers: */
-
-void bch2_mark_io_failure(struct bch_io_failures *,
- struct extent_ptr_decoded *);
-int bch2_bkey_pick_read_device(struct bch_fs *, struct bkey_s_c,
- struct bch_io_failures *,
- struct extent_ptr_decoded *);
-
-/* KEY_TYPE_btree_ptr: */
-
-int bch2_btree_ptr_invalid(struct bch_fs *, struct bkey_s_c,
- enum bkey_invalid_flags, struct printbuf *);
-void bch2_btree_ptr_to_text(struct printbuf *, struct bch_fs *,
- struct bkey_s_c);
-
-int bch2_btree_ptr_v2_invalid(struct bch_fs *, struct bkey_s_c,
- enum bkey_invalid_flags, struct printbuf *);
-void bch2_btree_ptr_v2_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
-void bch2_btree_ptr_v2_compat(enum btree_id, unsigned, unsigned,
- int, struct bkey_s);
-
-#define bch2_bkey_ops_btree_ptr ((struct bkey_ops) { \
- .key_invalid = bch2_btree_ptr_invalid, \
- .val_to_text = bch2_btree_ptr_to_text, \
- .swab = bch2_ptr_swab, \
- .trigger = bch2_trigger_extent, \
-})
-
-#define bch2_bkey_ops_btree_ptr_v2 ((struct bkey_ops) { \
- .key_invalid = bch2_btree_ptr_v2_invalid, \
- .val_to_text = bch2_btree_ptr_v2_to_text, \
- .swab = bch2_ptr_swab, \
- .compat = bch2_btree_ptr_v2_compat, \
- .trigger = bch2_trigger_extent, \
- .min_val_size = 40, \
-})
-
-/* KEY_TYPE_extent: */
-
-bool bch2_extent_merge(struct bch_fs *, struct bkey_s, struct bkey_s_c);
-
-#define bch2_bkey_ops_extent ((struct bkey_ops) { \
- .key_invalid = bch2_bkey_ptrs_invalid, \
- .val_to_text = bch2_bkey_ptrs_to_text, \
- .swab = bch2_ptr_swab, \
- .key_normalize = bch2_extent_normalize, \
- .key_merge = bch2_extent_merge, \
- .trigger = bch2_trigger_extent, \
-})
-
-/* KEY_TYPE_reservation: */
-
-int bch2_reservation_invalid(struct bch_fs *, struct bkey_s_c,
- enum bkey_invalid_flags, struct printbuf *);
-void bch2_reservation_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
-bool bch2_reservation_merge(struct bch_fs *, struct bkey_s, struct bkey_s_c);
-
-#define bch2_bkey_ops_reservation ((struct bkey_ops) { \
- .key_invalid = bch2_reservation_invalid, \
- .val_to_text = bch2_reservation_to_text, \
- .key_merge = bch2_reservation_merge, \
- .trigger = bch2_trigger_reservation, \
- .min_val_size = 8, \
-})
-
-/* Extent checksum entries: */
-
-bool bch2_can_narrow_extent_crcs(struct bkey_s_c,
- struct bch_extent_crc_unpacked);
-bool bch2_bkey_narrow_crcs(struct bkey_i *, struct bch_extent_crc_unpacked);
-void bch2_extent_crc_append(struct bkey_i *,
- struct bch_extent_crc_unpacked);
-
-/* Generic code for keys with pointers: */
-
-static inline bool bkey_is_btree_ptr(const struct bkey *k)
-{
- switch (k->type) {
- case KEY_TYPE_btree_ptr:
- case KEY_TYPE_btree_ptr_v2:
- return true;
- default:
- return false;
- }
-}
-
-static inline bool bkey_extent_is_direct_data(const struct bkey *k)
-{
- switch (k->type) {
- case KEY_TYPE_btree_ptr:
- case KEY_TYPE_btree_ptr_v2:
- case KEY_TYPE_extent:
- case KEY_TYPE_reflink_v:
- return true;
- default:
- return false;
- }
-}
-
-static inline bool bkey_extent_is_inline_data(const struct bkey *k)
-{
- return k->type == KEY_TYPE_inline_data ||
- k->type == KEY_TYPE_indirect_inline_data;
-}
-
-static inline unsigned bkey_inline_data_offset(const struct bkey *k)
-{
- switch (k->type) {
- case KEY_TYPE_inline_data:
- return sizeof(struct bch_inline_data);
- case KEY_TYPE_indirect_inline_data:
- return sizeof(struct bch_indirect_inline_data);
- default:
- BUG();
- }
-}
-
-static inline unsigned bkey_inline_data_bytes(const struct bkey *k)
-{
- return bkey_val_bytes(k) - bkey_inline_data_offset(k);
-}
-
-#define bkey_inline_data_p(_k) (((void *) (_k).v) + bkey_inline_data_offset((_k).k))
-
-static inline bool bkey_extent_is_data(const struct bkey *k)
-{
- return bkey_extent_is_direct_data(k) ||
- bkey_extent_is_inline_data(k) ||
- k->type == KEY_TYPE_reflink_p;
-}
-
-/*
- * Should extent be counted under inode->i_sectors?
- */
-static inline bool bkey_extent_is_allocation(const struct bkey *k)
-{
- switch (k->type) {
- case KEY_TYPE_extent:
- case KEY_TYPE_reservation:
- case KEY_TYPE_reflink_p:
- case KEY_TYPE_reflink_v:
- case KEY_TYPE_inline_data:
- case KEY_TYPE_indirect_inline_data:
- case KEY_TYPE_error:
- return true;
- default:
- return false;
- }
-}
-
-static inline bool bkey_extent_is_unwritten(struct bkey_s_c k)
-{
- struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
-
- bkey_for_each_ptr(ptrs, ptr)
- if (ptr->unwritten)
- return true;
- return false;
-}
-
-static inline bool bkey_extent_is_reservation(struct bkey_s_c k)
-{
- return k.k->type == KEY_TYPE_reservation ||
- bkey_extent_is_unwritten(k);
-}
-
-static inline struct bch_devs_list bch2_bkey_devs(struct bkey_s_c k)
-{
- struct bch_devs_list ret = (struct bch_devs_list) { 0 };
- struct bkey_ptrs_c p = bch2_bkey_ptrs_c(k);
-
- bkey_for_each_ptr(p, ptr)
- ret.data[ret.nr++] = ptr->dev;
-
- return ret;
-}
-
-static inline struct bch_devs_list bch2_bkey_dirty_devs(struct bkey_s_c k)
-{
- struct bch_devs_list ret = (struct bch_devs_list) { 0 };
- struct bkey_ptrs_c p = bch2_bkey_ptrs_c(k);
-
- bkey_for_each_ptr(p, ptr)
- if (!ptr->cached)
- ret.data[ret.nr++] = ptr->dev;
-
- return ret;
-}
-
-static inline struct bch_devs_list bch2_bkey_cached_devs(struct bkey_s_c k)
-{
- struct bch_devs_list ret = (struct bch_devs_list) { 0 };
- struct bkey_ptrs_c p = bch2_bkey_ptrs_c(k);
-
- bkey_for_each_ptr(p, ptr)
- if (ptr->cached)
- ret.data[ret.nr++] = ptr->dev;
-
- return ret;
-}
-
-static inline unsigned bch2_bkey_ptr_data_type(struct bkey_s_c k, const struct bch_extent_ptr *ptr)
-{
- switch (k.k->type) {
- case KEY_TYPE_btree_ptr:
- case KEY_TYPE_btree_ptr_v2:
- return BCH_DATA_btree;
- case KEY_TYPE_extent:
- case KEY_TYPE_reflink_v:
- return BCH_DATA_user;
- case KEY_TYPE_stripe: {
- struct bkey_s_c_stripe s = bkey_s_c_to_stripe(k);
-
- BUG_ON(ptr < s.v->ptrs ||
- ptr >= s.v->ptrs + s.v->nr_blocks);
-
- return ptr >= s.v->ptrs + s.v->nr_blocks - s.v->nr_redundant
- ? BCH_DATA_parity
- : BCH_DATA_user;
- }
- default:
- BUG();
- }
-}
-
-unsigned bch2_bkey_nr_ptrs(struct bkey_s_c);
-unsigned bch2_bkey_nr_ptrs_allocated(struct bkey_s_c);
-unsigned bch2_bkey_nr_ptrs_fully_allocated(struct bkey_s_c);
-bool bch2_bkey_is_incompressible(struct bkey_s_c);
-unsigned bch2_bkey_sectors_compressed(struct bkey_s_c);
-
-unsigned bch2_bkey_replicas(struct bch_fs *, struct bkey_s_c);
-unsigned bch2_extent_ptr_desired_durability(struct bch_fs *, struct extent_ptr_decoded *);
-unsigned bch2_extent_ptr_durability(struct bch_fs *, struct extent_ptr_decoded *);
-unsigned bch2_bkey_durability(struct bch_fs *, struct bkey_s_c);
-
-void bch2_bkey_drop_device(struct bkey_s, unsigned);
-void bch2_bkey_drop_device_noerror(struct bkey_s, unsigned);
-
-const struct bch_extent_ptr *bch2_bkey_has_device_c(struct bkey_s_c, unsigned);
-
-static inline struct bch_extent_ptr *bch2_bkey_has_device(struct bkey_s k, unsigned dev)
-{
- return (void *) bch2_bkey_has_device_c(k.s_c, dev);
-}
-
-bool bch2_bkey_has_target(struct bch_fs *, struct bkey_s_c, unsigned);
-
-void bch2_bkey_extent_entry_drop(struct bkey_i *, union bch_extent_entry *);
-
-static inline void bch2_bkey_append_ptr(struct bkey_i *k, struct bch_extent_ptr ptr)
-{
- struct bch_extent_ptr *dest;
-
- EBUG_ON(bch2_bkey_has_device(bkey_i_to_s(k), ptr.dev));
-
- switch (k->k.type) {
- case KEY_TYPE_btree_ptr:
- case KEY_TYPE_btree_ptr_v2:
- case KEY_TYPE_extent:
- EBUG_ON(bkey_val_u64s(&k->k) >= BKEY_EXTENT_VAL_U64s_MAX);
-
- ptr.type = 1 << BCH_EXTENT_ENTRY_ptr;
- dest = (struct bch_extent_ptr *)((void *) &k->v + bkey_val_bytes(&k->k));
- *dest = ptr;
- k->k.u64s++;
- break;
- default:
- BUG();
- }
-}
-
-void bch2_extent_ptr_decoded_append(struct bkey_i *,
- struct extent_ptr_decoded *);
-union bch_extent_entry *bch2_bkey_drop_ptr_noerror(struct bkey_s,
- struct bch_extent_ptr *);
-union bch_extent_entry *bch2_bkey_drop_ptr(struct bkey_s,
- struct bch_extent_ptr *);
-
-#define bch2_bkey_drop_ptrs(_k, _ptr, _cond) \
-do { \
- struct bkey_ptrs _ptrs = bch2_bkey_ptrs(_k); \
- \
- _ptr = &_ptrs.start->ptr; \
- \
- while ((_ptr = bkey_ptr_next(_ptrs, _ptr))) { \
- if (_cond) { \
- _ptr = (void *) bch2_bkey_drop_ptr(_k, _ptr); \
- _ptrs = bch2_bkey_ptrs(_k); \
- continue; \
- } \
- \
- (_ptr)++; \
- } \
-} while (0)
-
-bool bch2_bkey_matches_ptr(struct bch_fs *, struct bkey_s_c,
- struct bch_extent_ptr, u64);
-bool bch2_extents_match(struct bkey_s_c, struct bkey_s_c);
-struct bch_extent_ptr *
-bch2_extent_has_ptr(struct bkey_s_c, struct extent_ptr_decoded, struct bkey_s);
-
-void bch2_extent_ptr_set_cached(struct bkey_s, struct bch_extent_ptr *);
-
-bool bch2_extent_normalize(struct bch_fs *, struct bkey_s);
-void bch2_bkey_ptrs_to_text(struct printbuf *, struct bch_fs *,
- struct bkey_s_c);
-int bch2_bkey_ptrs_invalid(struct bch_fs *, struct bkey_s_c,
- enum bkey_invalid_flags, struct printbuf *);
-
-void bch2_ptr_swab(struct bkey_s);
-
-const struct bch_extent_rebalance *bch2_bkey_rebalance_opts(struct bkey_s_c);
-unsigned bch2_bkey_ptrs_need_rebalance(struct bch_fs *, struct bkey_s_c,
- unsigned, unsigned);
-bool bch2_bkey_needs_rebalance(struct bch_fs *, struct bkey_s_c);
-
-int bch2_bkey_set_needs_rebalance(struct bch_fs *, struct bkey_i *,
- unsigned, unsigned);
-
-/* Generic extent code: */
-
-enum bch_extent_overlap {
- BCH_EXTENT_OVERLAP_ALL = 0,
- BCH_EXTENT_OVERLAP_BACK = 1,
- BCH_EXTENT_OVERLAP_FRONT = 2,
- BCH_EXTENT_OVERLAP_MIDDLE = 3,
-};
-
-/* Returns how k overlaps with m */
-static inline enum bch_extent_overlap bch2_extent_overlap(const struct bkey *k,
- const struct bkey *m)
-{
- int cmp1 = bkey_lt(k->p, m->p);
- int cmp2 = bkey_gt(bkey_start_pos(k), bkey_start_pos(m));
-
- return (cmp1 << 1) + cmp2;
-}
-
-int bch2_cut_front_s(struct bpos, struct bkey_s);
-int bch2_cut_back_s(struct bpos, struct bkey_s);
-
-static inline void bch2_cut_front(struct bpos where, struct bkey_i *k)
-{
- bch2_cut_front_s(where, bkey_i_to_s(k));
-}
-
-static inline void bch2_cut_back(struct bpos where, struct bkey_i *k)
-{
- bch2_cut_back_s(where, bkey_i_to_s(k));
-}
-
-/**
- * bch_key_resize - adjust size of @k
- *
- * bkey_start_offset(k) will be preserved, modifies where the extent ends
- */
-static inline void bch2_key_resize(struct bkey *k, unsigned new_size)
-{
- k->p.offset -= k->size;
- k->p.offset += new_size;
- k->size = new_size;
-}
-
-#endif /* _BCACHEFS_EXTENTS_H */
projects / bcachefs-tools-debian / blobdiff