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Diffstat (limited to 'c_src/libbcachefs/backpointers.h')
-rw-r--r-- | c_src/libbcachefs/backpointers.h | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/c_src/libbcachefs/backpointers.h b/c_src/libbcachefs/backpointers.h deleted file mode 100644 index 737e2396..00000000 --- a/c_src/libbcachefs/backpointers.h +++ /dev/null @@ -1,133 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _BCACHEFS_BACKPOINTERS_BACKGROUND_H -#define _BCACHEFS_BACKPOINTERS_BACKGROUND_H - -#include "btree_iter.h" -#include "btree_update.h" -#include "buckets.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_invalid(struct bch_fs *, struct bkey_s_c k, - enum bkey_invalid_flags, struct printbuf *); -void bch2_backpointer_to_text(struct printbuf *, const struct bch_backpointer *); -void bch2_backpointer_k_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_invalid = bch2_backpointer_invalid, \ - .val_to_text = bch2_backpointer_k_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_fs *c, - struct bpos bp_pos) -{ - struct bch_dev *ca = bch_dev_bkey_exists(c, bp_pos.inode); - u64 bucket_sector = bp_pos.offset >> MAX_EXTENT_COMPRESS_RATIO_SHIFT; - - return POS(bp_pos.inode, sector_to_bucket(ca, bucket_sector)); -} - -/* - * Convert from pos in alloc btree + bucket offset to pos in backpointer btree: - */ -static inline struct bpos bucket_pos_to_bp(const struct bch_fs *c, - struct bpos bucket, - u64 bucket_offset) -{ - struct bch_dev *ca = bch_dev_bkey_exists(c, bucket.inode); - struct bpos ret; - - ret = POS(bucket.inode, - (bucket_to_sector(ca, bucket.offset) << - MAX_EXTENT_COMPRESS_RATIO_SHIFT) + bucket_offset); - - EBUG_ON(!bkey_eq(bucket, bp_pos_to_bucket(c, ret))); - - return ret; -} - -int bch2_bucket_backpointer_mod_nowritebuffer(struct btree_trans *, struct bpos bucket, - struct bch_backpointer, struct bkey_s_c, bool); - -static inline int bch2_bucket_backpointer_mod(struct btree_trans *trans, - struct bpos bucket, - struct bch_backpointer bp, - struct bkey_s_c orig_k, - bool insert) -{ - if (unlikely(bch2_backpointers_no_use_write_buffer)) - return bch2_bucket_backpointer_mod_nowritebuffer(trans, bucket, bp, orig_k, insert); - - struct bkey_i_backpointer bp_k; - - bkey_backpointer_init(&bp_k.k_i); - bp_k.k.p = bucket_pos_to_bp(trans->c, bucket, bp.bucket_offset); - bp_k.v = bp; - - if (!insert) { - bp_k.k.type = KEY_TYPE_deleted; - set_bkey_val_u64s(&bp_k.k, 0); - } - - return bch2_trans_update_buffered(trans, BTREE_ID_backpointers, &bp_k.k_i); -} - -static inline enum bch_data_type bkey_ptr_data_type(enum btree_id btree_id, unsigned level, - struct bkey_s_c k, struct extent_ptr_decoded p) -{ - return level ? BCH_DATA_btree : - p.has_ec ? BCH_DATA_stripe : - BCH_DATA_user; -} - -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, - struct bpos *bucket_pos, struct bch_backpointer *bp) -{ - enum bch_data_type data_type = bkey_ptr_data_type(btree_id, level, k, p); - s64 sectors = level ? btree_sectors(c) : k.k->size; - u32 bucket_offset; - - *bucket_pos = PTR_BUCKET_POS_OFFSET(c, &p.ptr, &bucket_offset); - *bp = (struct bch_backpointer) { - .btree_id = btree_id, - .level = level, - .data_type = data_type, - .bucket_offset = ((u64) bucket_offset << MAX_EXTENT_COMPRESS_RATIO_SHIFT) + - p.crc.offset, - .bucket_len = ptr_disk_sectors(sectors, p), - .pos = k.k->p, - }; -} - -int bch2_get_next_backpointer(struct btree_trans *, struct bpos, int, - struct bpos *, struct bch_backpointer *, unsigned); -struct bkey_s_c bch2_backpointer_get_key(struct btree_trans *, struct btree_iter *, - struct bpos, struct bch_backpointer, - unsigned); -struct btree *bch2_backpointer_get_node(struct btree_trans *, struct btree_iter *, - struct bpos, struct bch_backpointer); - -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 *); - -#endif /* _BCACHEFS_BACKPOINTERS_BACKGROUND_H */ |