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-rw-r--r--fs/bcachefs/backpointers.h200
1 files changed, 0 insertions, 200 deletions
diff --git a/fs/bcachefs/backpointers.h b/fs/bcachefs/backpointers.h
deleted file mode 100644
index 7e71afee1ac0..000000000000
--- a/fs/bcachefs/backpointers.h
+++ /dev/null
@@ -1,200 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _BCACHEFS_BACKPOINTERS_H
-#define _BCACHEFS_BACKPOINTERS_H
-
-#include "btree_cache.h"
-#include "btree_iter.h"
-#include "btree_update.h"
-#include "buckets.h"
-#include "error.h"
-#include "super.h"
-
-static inline u64 swab40(u64 x)
-{
- return (((x & 0x00000000ffULL) << 32)|
- ((x & 0x000000ff00ULL) << 16)|
- ((x & 0x0000ff0000ULL) >> 0)|
- ((x & 0x00ff000000ULL) >> 16)|
- ((x & 0xff00000000ULL) >> 32));
-}
-
-int bch2_backpointer_validate(struct bch_fs *, struct bkey_s_c k,
- struct bkey_validate_context);
-void bch2_backpointer_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
-void bch2_backpointer_swab(struct bkey_s);
-
-#define bch2_bkey_ops_backpointer ((struct bkey_ops) { \
- .key_validate = bch2_backpointer_validate, \
- .val_to_text = bch2_backpointer_to_text, \
- .swab = bch2_backpointer_swab, \
- .min_val_size = 32, \
-})
-
-#define MAX_EXTENT_COMPRESS_RATIO_SHIFT 10
-
-/*
- * Convert from pos in backpointer btree to pos of corresponding bucket in alloc
- * btree:
- */
-static inline struct bpos bp_pos_to_bucket(const struct bch_dev *ca, struct bpos bp_pos)
-{
- u64 bucket_sector = bp_pos.offset >> MAX_EXTENT_COMPRESS_RATIO_SHIFT;
-
- return POS(bp_pos.inode, sector_to_bucket(ca, bucket_sector));
-}
-
-static inline struct bpos bp_pos_to_bucket_and_offset(const struct bch_dev *ca, struct bpos bp_pos,
- u32 *bucket_offset)
-{
- u64 bucket_sector = bp_pos.offset >> MAX_EXTENT_COMPRESS_RATIO_SHIFT;
-
- return POS(bp_pos.inode, sector_to_bucket_and_offset(ca, bucket_sector, bucket_offset));
-}
-
-static inline bool bp_pos_to_bucket_nodev_noerror(struct bch_fs *c, struct bpos bp_pos, struct bpos *bucket)
-{
- guard(rcu)();
- struct bch_dev *ca = bch2_dev_rcu_noerror(c, bp_pos.inode);
- if (ca)
- *bucket = bp_pos_to_bucket(ca, bp_pos);
- return ca != NULL;
-}
-
-static inline struct bpos bucket_pos_to_bp_noerror(const struct bch_dev *ca,
- struct bpos bucket,
- u64 bucket_offset)
-{
- return POS(bucket.inode,
- (bucket_to_sector(ca, bucket.offset) <<
- MAX_EXTENT_COMPRESS_RATIO_SHIFT) + bucket_offset);
-}
-
-/*
- * Convert from pos in alloc btree + bucket offset to pos in backpointer btree:
- */
-static inline struct bpos bucket_pos_to_bp(const struct bch_dev *ca,
- struct bpos bucket,
- u64 bucket_offset)
-{
- struct bpos ret = bucket_pos_to_bp_noerror(ca, bucket, bucket_offset);
- EBUG_ON(!bkey_eq(bucket, bp_pos_to_bucket(ca, ret)));
- return ret;
-}
-
-static inline struct bpos bucket_pos_to_bp_start(const struct bch_dev *ca, struct bpos bucket)
-{
- return bucket_pos_to_bp(ca, bucket, 0);
-}
-
-static inline struct bpos bucket_pos_to_bp_end(const struct bch_dev *ca, struct bpos bucket)
-{
- return bpos_nosnap_predecessor(bucket_pos_to_bp(ca, bpos_nosnap_successor(bucket), 0));
-}
-
-int bch2_bucket_backpointer_mod_nowritebuffer(struct btree_trans *,
- struct bkey_s_c,
- struct bkey_i_backpointer *,
- bool);
-
-static inline int bch2_bucket_backpointer_mod(struct btree_trans *trans,
- struct bkey_s_c orig_k,
- struct bkey_i_backpointer *bp,
- bool insert)
-{
- if (static_branch_unlikely(&bch2_backpointers_no_use_write_buffer))
- return bch2_bucket_backpointer_mod_nowritebuffer(trans, orig_k, bp, insert);
-
- if (!insert) {
- bp->k.type = KEY_TYPE_deleted;
- set_bkey_val_u64s(&bp->k, 0);
- }
-
- return bch2_trans_update_buffered(trans, BTREE_ID_backpointers, &bp->k_i);
-}
-
-static inline enum bch_data_type bch2_bkey_ptr_data_type(struct bkey_s_c k,
- struct extent_ptr_decoded p,
- const union bch_extent_entry *entry)
-{
- 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:
- if (p.has_ec)
- return BCH_DATA_stripe;
- if (p.ptr.cached)
- return BCH_DATA_cached;
- else
- return BCH_DATA_user;
- case KEY_TYPE_stripe: {
- const struct bch_extent_ptr *ptr = &entry->ptr;
- 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();
- }
-}
-
-static inline void bch2_extent_ptr_to_bp(struct bch_fs *c,
- enum btree_id btree_id, unsigned level,
- struct bkey_s_c k, struct extent_ptr_decoded p,
- const union bch_extent_entry *entry,
- struct bkey_i_backpointer *bp)
-{
- bkey_backpointer_init(&bp->k_i);
- bp->k.p.inode = p.ptr.dev;
-
- if (k.k->type != KEY_TYPE_stripe)
- bp->k.p.offset = ((u64) p.ptr.offset << MAX_EXTENT_COMPRESS_RATIO_SHIFT) + p.crc.offset;
- else {
- /*
- * Put stripe backpointers where they won't collide with the
- * extent backpointers within the stripe:
- */
- struct bkey_s_c_stripe s = bkey_s_c_to_stripe(k);
- bp->k.p.offset = ((u64) (p.ptr.offset + le16_to_cpu(s.v->sectors)) <<
- MAX_EXTENT_COMPRESS_RATIO_SHIFT) - 1;
- }
-
- bp->v = (struct bch_backpointer) {
- .btree_id = btree_id,
- .level = level,
- .data_type = bch2_bkey_ptr_data_type(k, p, entry),
- .bucket_gen = p.ptr.gen,
- .bucket_len = ptr_disk_sectors(level ? btree_sectors(c) : k.k->size, p),
- .pos = k.k->p,
- };
-}
-
-struct bkey_buf;
-struct bkey_s_c bch2_backpointer_get_key(struct btree_trans *, struct bkey_s_c_backpointer,
- struct btree_iter *, unsigned, struct bkey_buf *);
-struct btree *bch2_backpointer_get_node(struct btree_trans *, struct bkey_s_c_backpointer,
- struct btree_iter *, struct bkey_buf *);
-
-int bch2_check_bucket_backpointer_mismatch(struct btree_trans *, struct bch_dev *, u64,
- bool, struct bkey_buf *);
-
-int bch2_check_btree_backpointers(struct bch_fs *);
-int bch2_check_extents_to_backpointers(struct bch_fs *);
-int bch2_check_backpointers_to_extents(struct bch_fs *);
-
-static inline bool bch2_bucket_bitmap_test(struct bucket_bitmap *b, u64 i)
-{
- unsigned long *bitmap = READ_ONCE(b->buckets);
- return bitmap && test_bit(i, bitmap);
-}
-
-int bch2_bucket_bitmap_resize(struct bch_dev *, struct bucket_bitmap *, u64, u64);
-void bch2_bucket_bitmap_free(struct bucket_bitmap *);
-
-#endif /* _BCACHEFS_BACKPOINTERS_BACKGROUND_H */
generated by cgit v1.2.3 (git 2.46.0) at 2025-09-30 16:44:23 +0000