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bcachefs: CLASS(btree_trans)

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Allow btree_trans to be used with CLASS().

Automatic cleanup, instead of manually calling bch2_trans_put().

We don't use DEFINE_CLASS because using a static inline for the
constructor breaks bch2_trans_get()'s use of __func__, so we have to
open code it.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2025-05-25 01:41:17 -04:00
parent 42359f1615
commit 9cb49fbf73
1 changed files with 21 additions and 10 deletions
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31
fs/bcachefs/btree_iter.h
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@ -963,16 +963,6 @@ struct bkey_s_c bch2_btree_iter_peek_and_restart_outlined(struct btree_trans *,
_p; \ _p; \
}) })
#define bch2_trans_run(_c, _do) \
({ \
struct btree_trans *trans = bch2_trans_get(_c); \
int _ret = (_do); \
bch2_trans_put(trans); \
_ret; \
})
#define bch2_trans_do(_c, _do) bch2_trans_run(_c, lockrestart_do(trans, _do))
struct btree_trans *__bch2_trans_get(struct bch_fs *, unsigned); struct btree_trans *__bch2_trans_get(struct bch_fs *, unsigned);
void bch2_trans_put(struct btree_trans *); void bch2_trans_put(struct btree_trans *);
@ -990,6 +980,27 @@ unsigned bch2_trans_get_fn_idx(const char *);
__bch2_trans_get(_c, trans_fn_idx); \ __bch2_trans_get(_c, trans_fn_idx); \
}) })
/*
* We don't use DEFINE_CLASS() because using a function for the constructor
* breaks bch2_trans_get()'s use of __func__
*/
typedef struct btree_trans * class_btree_trans_t;
static inline void class_btree_trans_destructor(struct btree_trans **p)
{
struct btree_trans *trans = *p;
bch2_trans_put(trans);
}
#define class_btree_trans_constructor(_c) bch2_trans_get(_c)
#define bch2_trans_run(_c, _do) \
({ \
CLASS(btree_trans, trans)(_c); \
(_do); \
})
#define bch2_trans_do(_c, _do) bch2_trans_run(_c, lockrestart_do(trans, _do))
void bch2_btree_trans_to_text(struct printbuf *, struct btree_trans *); void bch2_btree_trans_to_text(struct printbuf *, struct btree_trans *);
void bch2_fs_btree_iter_exit(struct bch_fs *); void bch2_fs_btree_iter_exit(struct bch_fs *);