From 9f0fc191371843c4fc000a226b0a26b6c059aacd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 18 May 2024 19:40:19 +0200 Subject: Merging upstream version 6.7.7. Signed-off-by: Daniel Baumann --- fs/bcachefs/bkey_buf.h | 61 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 fs/bcachefs/bkey_buf.h (limited to 'fs/bcachefs/bkey_buf.h') diff --git a/fs/bcachefs/bkey_buf.h b/fs/bcachefs/bkey_buf.h new file mode 100644 index 0000000000..a30c4ae8eb --- /dev/null +++ b/fs/bcachefs/bkey_buf.h @@ -0,0 +1,61 @@ +/* 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 */ -- cgit v1.2.3