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linux/fs/bcachefs/io_misc.h

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bcachefs: Break up io.c More reorganization, this splits up io.c into - io_read.c - io_misc.c - fallocate, fpunch, truncate - io_write.c Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-09-11 06:05:17 +08:00
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_IO_MISC_H
#define _BCACHEFS_IO_MISC_H
int bch2_extent_fallocate(struct btree_trans *, subvol_inum, struct btree_iter *,
unsigned, struct bch_io_opts, s64 *,
struct write_point_specifier);
int bch2_fpunch_at(struct btree_trans *, struct btree_iter *,
subvol_inum, u64, s64 *);
int bch2_fpunch(struct bch_fs *c, subvol_inum, u64, u64, s64 *);
bcachefs: Log truncate operations Previously, we guaranteed atomicity of truncate after unclean shutdown with the BCH_INODE_I_SIZE_DIRTY flag - which required a full scan of the inodes btree. Recently the deleted inodes btree was added so that we no longer have to scan for deleted inodes, but truncate was unfinished and that change left it broken. This patch uses the new logged operations btree to fix truncate atomicity; we now log an operation that can be replayed at the start of a truncate. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-09-11 04:42:30 +08:00
void bch2_logged_op_truncate_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
#define bch2_bkey_ops_logged_op_truncate ((struct bkey_ops) { \
.val_to_text = bch2_logged_op_truncate_to_text, \
.min_val_size = 24, \
})
int bch2_resume_logged_op_truncate(struct btree_trans *, struct bkey_i *);
bcachefs: New io_misc.c helpers This pulls the non vfs specific parts of truncate and finsert/fcollapse out of fs-io.c, and moves them to io_misc.c. This is prep work for logging these operations, to make them atomic in the event of a crash. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-09-04 17:38:30 +08:00
int bch2_truncate(struct bch_fs *, subvol_inum, u64, u64 *);
bcachefs: Log finsert/fcollapse operations Now that we have the logged operations btree, we can make finsert/fcollapse atomic w.r.t. unclean shutdown as well. This adds bch_logged_op_finsert to represent the state of an finsert or fcollapse, which is a bit more complicated than truncate since we need to track our position in the "shift extents" operation. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-09-11 07:11:47 +08:00
void bch2_logged_op_finsert_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
#define bch2_bkey_ops_logged_op_finsert ((struct bkey_ops) { \
.val_to_text = bch2_logged_op_finsert_to_text, \
.min_val_size = 24, \
})
int bch2_resume_logged_op_finsert(struct btree_trans *, struct bkey_i *);
bcachefs: New io_misc.c helpers This pulls the non vfs specific parts of truncate and finsert/fcollapse out of fs-io.c, and moves them to io_misc.c. This is prep work for logging these operations, to make them atomic in the event of a crash. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-09-04 17:38:30 +08:00
int bch2_fcollapse_finsert(struct bch_fs *, subvol_inum, u64, u64, bool, s64 *);
bcachefs: Break up io.c More reorganization, this splits up io.c into - io_read.c - io_misc.c - fallocate, fpunch, truncate - io_write.c Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-09-11 06:05:17 +08:00
#endif /* _BCACHEFS_IO_MISC_H */
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