diff options
Diffstat (limited to 'fs/bcachefs/str_hash.h')
-rw-r--r-- | fs/bcachefs/str_hash.h | 70 |
1 files changed, 29 insertions, 41 deletions
diff --git a/fs/bcachefs/str_hash.h b/fs/bcachefs/str_hash.h index 3976f80721bf..cbad9b27874f 100644 --- a/fs/bcachefs/str_hash.h +++ b/fs/bcachefs/str_hash.h @@ -15,16 +15,6 @@ #include <crypto/hash.h> #include <crypto/sha2.h> -typedef unsigned __bitwise bch_str_hash_flags_t; - -enum bch_str_hash_flags { - __BCH_HASH_SET_MUST_CREATE, - __BCH_HASH_SET_MUST_REPLACE, -}; - -#define BCH_HASH_SET_MUST_CREATE (__force bch_str_hash_flags_t) BIT(__BCH_HASH_SET_MUST_CREATE) -#define BCH_HASH_SET_MUST_REPLACE (__force bch_str_hash_flags_t) BIT(__BCH_HASH_SET_MUST_REPLACE) - static inline enum bch_str_hash_type bch2_str_hash_opt_to_type(struct bch_fs *c, enum bch_str_hash_opts opt) { @@ -159,13 +149,14 @@ static inline bool is_visible_key(struct bch_hash_desc desc, subvol_inum inum, s desc.is_visible(inum, k)); } -static __always_inline int +static __always_inline struct bkey_s_c bch2_hash_lookup_in_snapshot(struct btree_trans *trans, struct btree_iter *iter, const struct bch_hash_desc desc, const struct bch_hash_info *info, subvol_inum inum, const void *key, - unsigned flags, u32 snapshot) + enum btree_iter_update_trigger_flags flags, + u32 snapshot) { struct bkey_s_c k; int ret; @@ -173,10 +164,10 @@ bch2_hash_lookup_in_snapshot(struct btree_trans *trans, for_each_btree_key_upto_norestart(trans, *iter, desc.btree_id, SPOS(inum.inum, desc.hash_key(info, key), snapshot), POS(inum.inum, U64_MAX), - BTREE_ITER_SLOTS|flags, k, ret) { + BTREE_ITER_slots|flags, k, ret) { if (is_visible_key(desc, inum, k)) { if (!desc.cmp_key(k, key)) - return 0; + return k; } else if (k.k->type == KEY_TYPE_hash_whiteout) { ; } else { @@ -186,20 +177,23 @@ bch2_hash_lookup_in_snapshot(struct btree_trans *trans, } bch2_trans_iter_exit(trans, iter); - return ret ?: -BCH_ERR_ENOENT_str_hash_lookup; + return bkey_s_c_err(ret ?: -BCH_ERR_ENOENT_str_hash_lookup); } -static __always_inline int +static __always_inline struct bkey_s_c bch2_hash_lookup(struct btree_trans *trans, struct btree_iter *iter, const struct bch_hash_desc desc, const struct bch_hash_info *info, subvol_inum inum, const void *key, - unsigned flags) + enum btree_iter_update_trigger_flags flags) { u32 snapshot; - return bch2_subvolume_get_snapshot(trans, inum.subvol, &snapshot) ?: - bch2_hash_lookup_in_snapshot(trans, iter, desc, info, inum, key, flags, snapshot); + int ret = bch2_subvolume_get_snapshot(trans, inum.subvol, &snapshot); + if (ret) + return bkey_s_c_err(ret); + + return bch2_hash_lookup_in_snapshot(trans, iter, desc, info, inum, key, flags, snapshot); } static __always_inline int @@ -220,7 +214,7 @@ bch2_hash_hole(struct btree_trans *trans, for_each_btree_key_upto_norestart(trans, *iter, desc.btree_id, SPOS(inum.inum, desc.hash_key(info, key), snapshot), POS(inum.inum, U64_MAX), - BTREE_ITER_SLOTS|BTREE_ITER_INTENT, k, ret) + BTREE_ITER_slots|BTREE_ITER_intent, k, ret) if (!is_visible_key(desc, inum, k)) return 0; bch2_trans_iter_exit(trans, iter); @@ -242,7 +236,7 @@ int bch2_hash_needs_whiteout(struct btree_trans *trans, bch2_btree_iter_advance(&iter); - for_each_btree_key_continue_norestart(iter, BTREE_ITER_SLOTS, k, ret) { + for_each_btree_key_continue_norestart(iter, BTREE_ITER_slots, k, ret) { if (k.k->type != desc.key_type && k.k->type != KEY_TYPE_hash_whiteout) break; @@ -264,8 +258,7 @@ int bch2_hash_set_in_snapshot(struct btree_trans *trans, const struct bch_hash_info *info, subvol_inum inum, u32 snapshot, struct bkey_i *insert, - bch_str_hash_flags_t str_hash_flags, - int update_flags) + enum btree_iter_update_trigger_flags flags) { struct btree_iter iter, slot = { NULL }; struct bkey_s_c k; @@ -277,7 +270,7 @@ int bch2_hash_set_in_snapshot(struct btree_trans *trans, desc.hash_bkey(info, bkey_i_to_s_c(insert)), snapshot), POS(insert->k.p.inode, U64_MAX), - BTREE_ITER_SLOTS|BTREE_ITER_INTENT, k, ret) { + BTREE_ITER_slots|BTREE_ITER_intent, k, ret) { if (is_visible_key(desc, inum, k)) { if (!desc.cmp_bkey(k, bkey_i_to_s_c(insert))) goto found; @@ -286,8 +279,7 @@ int bch2_hash_set_in_snapshot(struct btree_trans *trans, continue; } - if (!slot.path && - !(str_hash_flags & BCH_HASH_SET_MUST_REPLACE)) + if (!slot.path && !(flags & STR_HASH_must_replace)) bch2_trans_copy_iter(&slot, &iter); if (k.k->type != KEY_TYPE_hash_whiteout) @@ -305,16 +297,16 @@ found: found = true; not_found: - if (!found && (str_hash_flags & BCH_HASH_SET_MUST_REPLACE)) { + if (!found && (flags & STR_HASH_must_replace)) { ret = -BCH_ERR_ENOENT_str_hash_set_must_replace; - } else if (found && (str_hash_flags & BCH_HASH_SET_MUST_CREATE)) { + } else if (found && (flags & STR_HASH_must_create)) { ret = -EEXIST; } else { if (!found && slot.path) swap(iter, slot); insert->k.p = iter.pos; - ret = bch2_trans_update(trans, &iter, insert, update_flags); + ret = bch2_trans_update(trans, &iter, insert, flags); } goto out; @@ -326,14 +318,14 @@ int bch2_hash_set(struct btree_trans *trans, const struct bch_hash_info *info, subvol_inum inum, struct bkey_i *insert, - bch_str_hash_flags_t str_hash_flags) + enum btree_iter_update_trigger_flags flags) { insert->k.p.inode = inum.inum; u32 snapshot; return bch2_subvolume_get_snapshot(trans, inum.subvol, &snapshot) ?: bch2_hash_set_in_snapshot(trans, desc, info, inum, - snapshot, insert, str_hash_flags, 0); + snapshot, insert, flags); } static __always_inline @@ -341,7 +333,7 @@ int bch2_hash_delete_at(struct btree_trans *trans, const struct bch_hash_desc desc, const struct bch_hash_info *info, struct btree_iter *iter, - unsigned update_flags) + enum btree_iter_update_trigger_flags flags) { struct bkey_i *delete; int ret; @@ -359,7 +351,7 @@ int bch2_hash_delete_at(struct btree_trans *trans, delete->k.p = iter->pos; delete->k.type = ret ? KEY_TYPE_hash_whiteout : KEY_TYPE_deleted; - return bch2_trans_update(trans, iter, delete, update_flags); + return bch2_trans_update(trans, iter, delete, flags); } static __always_inline @@ -369,14 +361,10 @@ int bch2_hash_delete(struct btree_trans *trans, subvol_inum inum, const void *key) { struct btree_iter iter; - int ret; - - ret = bch2_hash_lookup(trans, &iter, desc, info, inum, key, - BTREE_ITER_INTENT); - if (ret) - return ret; - - ret = bch2_hash_delete_at(trans, desc, info, &iter, 0); + struct bkey_s_c k = bch2_hash_lookup(trans, &iter, desc, info, inum, key, + BTREE_ITER_intent); + int ret = bkey_err(k) ?: + bch2_hash_delete_at(trans, desc, info, &iter, 0); bch2_trans_iter_exit(trans, &iter); return ret; } |