linux/fs/bcachefs/bkey_buf.h
Kent Overstreet 77671e8fff bcachefs: Move bkey bkey_unpack_key() to bkey.h
Long ago, bkey_unpack_key() was added to bset.h instead of bkey.h
because bkey.h didn't include btree_types.h, which it needs for the
compiled unpack function.

This patch finally moves it to the proper location.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-22 17:09:45 -04:00

62 lines
1.4 KiB
C

/* 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(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(&c->large_bkey_pool, GFP_NOFS);
memcpy(s->k, s->onstack, sizeof(s->onstack));
}
}
static inline void bch2_bkey_buf_reassemble(struct bkey_buf *s,
struct bch_fs *c,
struct bkey_s_c k)
{
bch2_bkey_buf_realloc(s, c, k.k->u64s);
bkey_reassemble(s->k, k);
}
static inline void bch2_bkey_buf_copy(struct bkey_buf *s,
struct bch_fs *c,
struct bkey_i *src)
{
bch2_bkey_buf_realloc(s, c, src->k.u64s);
bkey_copy(s->k, src);
}
static inline void bch2_bkey_buf_unpack(struct bkey_buf *s,
struct bch_fs *c,
struct btree *b,
struct bkey_packed *src)
{
bch2_bkey_buf_realloc(s, c, BKEY_U64s +
bkeyp_val_u64s(&b->format, src));
bch2_bkey_unpack(b, s->k, src);
}
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 */