mirror of
https://github.com/torvalds/linux.git
synced 2024-11-22 20:22:09 +00:00
d4e3b928ab
Control flow integrity is now checking that type signatures match on indirect function calls. That breaks closures, which embed a work_struct in a closure in such a way that a closure_fn may also be used as a workqueue fn by the underlying closure code. So we have to change closure fns to take a work_struct as their argument - but that results in a loss of clarity, as closure fns have different semantics from normal workqueue functions (they run owning a ref on the closure, which must be released with continue_at() or closure_return()). Thus, this patc introduces CLOSURE_CALLBACK() and closure_type() macros as suggested by Kees, to smooth things over a bit. Suggested-by: Kees Cook <keescook@chromium.org> Cc: Coly Li <colyli@suse.de> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
110 lines
2.8 KiB
C
110 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _BCACHEFS_IO_WRITE_H
|
|
#define _BCACHEFS_IO_WRITE_H
|
|
|
|
#include "checksum.h"
|
|
#include "io_write_types.h"
|
|
|
|
#define to_wbio(_bio) \
|
|
container_of((_bio), struct bch_write_bio, bio)
|
|
|
|
void bch2_bio_free_pages_pool(struct bch_fs *, struct bio *);
|
|
void bch2_bio_alloc_pages_pool(struct bch_fs *, struct bio *, size_t);
|
|
|
|
#ifndef CONFIG_BCACHEFS_NO_LATENCY_ACCT
|
|
void bch2_latency_acct(struct bch_dev *, u64, int);
|
|
#else
|
|
static inline void bch2_latency_acct(struct bch_dev *ca, u64 submit_time, int rw) {}
|
|
#endif
|
|
|
|
void bch2_submit_wbio_replicas(struct bch_write_bio *, struct bch_fs *,
|
|
enum bch_data_type, const struct bkey_i *, bool);
|
|
|
|
#define BCH_WRITE_FLAGS() \
|
|
x(ALLOC_NOWAIT) \
|
|
x(CACHED) \
|
|
x(DATA_ENCODED) \
|
|
x(PAGES_STABLE) \
|
|
x(PAGES_OWNED) \
|
|
x(ONLY_SPECIFIED_DEVS) \
|
|
x(WROTE_DATA_INLINE) \
|
|
x(FROM_INTERNAL) \
|
|
x(CHECK_ENOSPC) \
|
|
x(SYNC) \
|
|
x(MOVE) \
|
|
x(IN_WORKER) \
|
|
x(DONE) \
|
|
x(IO_ERROR) \
|
|
x(CONVERT_UNWRITTEN)
|
|
|
|
enum __bch_write_flags {
|
|
#define x(f) __BCH_WRITE_##f,
|
|
BCH_WRITE_FLAGS()
|
|
#undef x
|
|
};
|
|
|
|
enum bch_write_flags {
|
|
#define x(f) BCH_WRITE_##f = BIT(__BCH_WRITE_##f),
|
|
BCH_WRITE_FLAGS()
|
|
#undef x
|
|
};
|
|
|
|
static inline struct workqueue_struct *index_update_wq(struct bch_write_op *op)
|
|
{
|
|
return op->watermark == BCH_WATERMARK_copygc
|
|
? op->c->copygc_wq
|
|
: op->c->btree_update_wq;
|
|
}
|
|
|
|
int bch2_sum_sector_overwrites(struct btree_trans *, struct btree_iter *,
|
|
struct bkey_i *, bool *, s64 *, s64 *);
|
|
int bch2_extent_update(struct btree_trans *, subvol_inum,
|
|
struct btree_iter *, struct bkey_i *,
|
|
struct disk_reservation *, u64, s64 *, bool);
|
|
|
|
static inline void bch2_write_op_init(struct bch_write_op *op, struct bch_fs *c,
|
|
struct bch_io_opts opts)
|
|
{
|
|
op->c = c;
|
|
op->end_io = NULL;
|
|
op->flags = 0;
|
|
op->written = 0;
|
|
op->error = 0;
|
|
op->csum_type = bch2_data_checksum_type(c, opts);
|
|
op->compression_opt = opts.compression;
|
|
op->nr_replicas = 0;
|
|
op->nr_replicas_required = c->opts.data_replicas_required;
|
|
op->watermark = BCH_WATERMARK_normal;
|
|
op->incompressible = 0;
|
|
op->open_buckets.nr = 0;
|
|
op->devs_have.nr = 0;
|
|
op->target = 0;
|
|
op->opts = opts;
|
|
op->subvol = 0;
|
|
op->pos = POS_MAX;
|
|
op->version = ZERO_VERSION;
|
|
op->write_point = (struct write_point_specifier) { 0 };
|
|
op->res = (struct disk_reservation) { 0 };
|
|
op->new_i_size = U64_MAX;
|
|
op->i_sectors_delta = 0;
|
|
op->devs_need_flush = NULL;
|
|
}
|
|
|
|
CLOSURE_CALLBACK(bch2_write);
|
|
void bch2_write_point_do_index_updates(struct work_struct *);
|
|
|
|
static inline struct bch_write_bio *wbio_init(struct bio *bio)
|
|
{
|
|
struct bch_write_bio *wbio = to_wbio(bio);
|
|
|
|
memset(&wbio->wbio, 0, sizeof(wbio->wbio));
|
|
return wbio;
|
|
}
|
|
|
|
void bch2_write_op_to_text(struct printbuf *, struct bch_write_op *);
|
|
|
|
void bch2_fs_io_write_exit(struct bch_fs *);
|
|
int bch2_fs_io_write_init(struct bch_fs *);
|
|
|
|
#endif /* _BCACHEFS_IO_WRITE_H */
|