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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_BKEY_BUF_H
#define _BCACHEFS_BKEY_BUF_H
#include "bcachefs.h"
#include "bkey.h"
struct bkey_buf {
struct bkey_i *k;
u64 onstack[12];
};
static inline void 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));
}
}
#define bch2_bkey_buf_realloc(...) alloc_hooks_void(bch2_bkey_buf_realloc_noprof(__VA_ARGS__))
#define bch2_bkey_buf_reassemble(_s, _c, _k) \
do { \
bch2_bkey_buf_realloc(_s, _c, (_k).k->u64s); \
bkey_reassemble((_s)->k, _k); \
} while (0)
#define bch2_bkey_buf_copy(_s, _c, _src) \
do { \
bch2_bkey_buf_realloc(_s, _c, (_src)->k.u64s); \
bkey_copy((_s)->k, _src); \
} while (0)
#define bch2_bkey_buf_unpack(_s, _c, _b, _src) \
do { \
bch2_bkey_buf_realloc(_s, _c, BKEY_U64s + \
bkeyp_val_u64s(&_b->format, _src)); \
bch2_bkey_unpack(_b, (_s)->k, _src); \
} while (0)
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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