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Diffstat (limited to 'fs/bcachefs/str_hash.h')
-rw-r--r--fs/bcachefs/str_hash.h72
1 files changed, 30 insertions, 42 deletions
diff --git a/fs/bcachefs/str_hash.h b/fs/bcachefs/str_hash.h
index 3976f80721..c8c266cb57 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)) {
- ret = -EEXIST;
+ } else if (found && (flags & STR_HASH_must_create)) {
+ ret = -BCH_ERR_EEXIST_str_hash_set;
} 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;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-20 10:10:28 +0000