linux/fs/bcachefs/io_misc.c

// SPDX-License-Identifier: GPL-2.0
/*
 * io_misc.c - fallocate, fpunch, truncate:
 */

#include "bcachefs.h"
#include "alloc_foreground.h"
#include "bkey_buf.h"
#include "btree_update.h"
#include "buckets.h"
#include "clock.h"
#include "error.h"
#include "extents.h"
#include "extent_update.h"
#include "inode.h"
#include "io_misc.h"
#include "io_write.h"
#include "logged_ops.h"
#include "rebalance.h"
#include "subvolume.h"

/* Overwrites whatever was present with zeroes: */
int bch2_extent_fallocate(struct btree_trans *trans,
			  subvol_inum inum,
			  struct btree_iter *iter,
			  u64 sectors,
			  struct bch_io_opts opts,
			  s64 *i_sectors_delta,
			  struct write_point_specifier write_point)
{ … }

/*
 * Returns -BCH_ERR_transacton_restart if we had to drop locks:
 */
int bch2_fpunch_at(struct btree_trans *trans, struct btree_iter *iter,
		   subvol_inum inum, u64 end,
		   s64 *i_sectors_delta)
{ … }

int bch2_fpunch(struct bch_fs *c, subvol_inum inum, u64 start, u64 end,
		s64 *i_sectors_delta)
{ … }

/* truncate: */

void bch2_logged_op_truncate_to_text(struct printbuf *out, struct bch_fs *c, struct bkey_s_c k)
{ … }

static int truncate_set_isize(struct btree_trans *trans,
			      subvol_inum inum,
			      u64 new_i_size)
{ … }

static int __bch2_resume_logged_op_truncate(struct btree_trans *trans,
					    struct bkey_i *op_k,
					    u64 *i_sectors_delta)
{ … }

int bch2_resume_logged_op_truncate(struct btree_trans *trans, struct bkey_i *op_k)
{ … }

int bch2_truncate(struct bch_fs *c, subvol_inum inum, u64 new_i_size, u64 *i_sectors_delta)
{ … }

/* finsert/fcollapse: */

void bch2_logged_op_finsert_to_text(struct printbuf *out, struct bch_fs *c, struct bkey_s_c k)
{ … }

static int adjust_i_size(struct btree_trans *trans, subvol_inum inum, u64 offset, s64 len)
{ … }

static int __bch2_resume_logged_op_finsert(struct btree_trans *trans,
					   struct bkey_i *op_k,
					   u64 *i_sectors_delta)
{ … }

int bch2_resume_logged_op_finsert(struct btree_trans *trans, struct bkey_i *op_k)
{ … }

int bch2_fcollapse_finsert(struct bch_fs *c, subvol_inum inum,
			   u64 offset, u64 len, bool insert,
			   s64 *i_sectors_delta)
{ … }