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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_BKEY_BUF_H
#define _BCACHEFS_BKEY_BUF_H
#include <linux/mempool.h>
#include "bcachefs.h"
#include "bkey.h"
struct bkey_buf {
struct bkey_i *k;
u64 onstack[12];
};
static inline int bch2_bkey_buf_realloc_noprof(struct bkey_buf *s,
struct bch_fs *c, unsigned u64s)
{
if (s->k == (void *) s->onstack &&
u64s > ARRAY_SIZE(s->onstack)) {
s->k = mempool_alloc_noprof(&c->large_bkey_pool, GFP_NOFS);
memcpy(s->k, s->onstack, sizeof(s->onstack));
}
return 0; /* for alloc_hooks() macro */
}
#define bch2_bkey_buf_realloc(...) alloc_hooks(bch2_bkey_buf_realloc_noprof(__VA_ARGS__))
static inline int bch2_bkey_buf_reassemble_noprof(struct bkey_buf *s,
struct bch_fs *c,
struct bkey_s_c k)
{
bch2_bkey_buf_realloc_noprof(s, c, k.k->u64s);
bkey_reassemble(s->k, k);
return 0;
}
#define bch2_bkey_buf_reassemble(...) alloc_hooks(bch2_bkey_buf_reassemble_noprof(__VA_ARGS__))
static inline int bch2_bkey_buf_copy_noprof(struct bkey_buf *s,
struct bch_fs *c,
struct bkey_i *src)
{
bch2_bkey_buf_realloc_noprof(s, c, src->k.u64s);
bkey_copy(s->k, src);
return 0;
}
#define bch2_bkey_buf_copy(...) alloc_hooks(bch2_bkey_buf_copy_noprof(__VA_ARGS__))
static inline int bch2_bkey_buf_unpack_noprof(struct bkey_buf *s,
struct bch_fs *c,
struct btree *b,
struct bkey_packed *src)
{
bch2_bkey_buf_realloc_noprof(s, c, BKEY_U64s + bkeyp_val_u64s(&b->format, src));
bch2_bkey_unpack(b, s->k, src);
return 0;
}
#define bch2_bkey_buf_unpack(...) alloc_hooks(bch2_bkey_buf_unpack_noprof(__VA_ARGS__))
static inline void bch2_bkey_buf_init(struct bkey_buf *s)
{
s->k = (void *) s->onstack;
}
static inline void bch2_bkey_buf_exit(struct bkey_buf *s, struct bch_fs *c)
{
if (s->k != (void *) s->onstack)
mempool_free(s->k, &c->large_bkey_pool);
s->k = NULL;
}
#endif /* _BCACHEFS_BKEY_BUF_H */
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