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linux/fs/bcachefs/journal_seq_blacklist.h

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bcachefs: Initial commit Initially forked from drivers/md/bcache, bcachefs is a new copy-on-write filesystem with every feature you could possibly want. Website: https://bcachefs.org Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2017-03-16 23:18:50 -07:00
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_JOURNAL_SEQ_BLACKLIST_H
#define _BCACHEFS_JOURNAL_SEQ_BLACKLIST_H
bcachefs: Fix a bug with the journal_seq_blacklist mechanism Previously, we would start doing btree updates before writing the first journal entry; if this was after an unclean shutdown, this could cause those btree updates to not be blacklisted. Also, move some code to headers for userspace debug tools. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2020-08-04 20:10:08 -07:00
static inline unsigned
blacklist_nr_entries(struct bch_sb_field_journal_seq_blacklist *bl)
{
return bl
? ((vstruct_end(&bl->field) - (void *) &bl->start[0]) /
sizeof(struct journal_seq_blacklist_entry))
: 0;
}
bcachefs: Rewrite journal_seq_blacklist machinery Now, we store blacklisted journal sequence numbers in the superblock, not the journal: this helps to greatly simplify the code, and more importantly it's now implemented in a way that doesn't require all btree nodes to be visited before starting the journal - instead, we unconditionally blacklist the next 4 journal sequence numbers after an unclean shutdown. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2019-04-04 18:53:12 -07:00
bool bch2_journal_seq_is_blacklisted(struct bch_fs *, u64, bool);
int bch2_journal_seq_blacklist_add(struct bch_fs *c, u64, u64);
int bch2_blacklist_table_initialize(struct bch_fs *);
extern const struct bch_sb_field_ops bch_sb_field_ops_journal_seq_blacklist;
bcachefs: journal seq blacklist gc no longer has to walk btree Since btree_ptr_v2, we no longer require the journal seq blacklist table for skipping blacklisted bsets (btree node entries); the pointer to a given node indicates how much data is present. Therefore there's no longer any need for journal seq blacklist gc to walk the btree - we can prune entries older than journal last_seq. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-04-20 19:19:48 -07:00
bool bch2_blacklist_entries_gc(struct bch_fs *);
Revert "bcachefs: Delete some obsolete journal_seq_blacklist code" This reverts commit f95b61228efd04c9c158123da5827c96e9773b29. It turns out, we're seeing filesystems in the wild end up with blacklisted btree node bsets - this should not be happening, and until we understand why and fix it we need to keep this code around. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
2022-01-04 17:41:23 -07:00
bcachefs: Initial commit Initially forked from drivers/md/bcache, bcachefs is a new copy-on-write filesystem with every feature you could possibly want. Website: https://bcachefs.org Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2017-03-16 23:18:50 -07:00
#endif /* _BCACHEFS_JOURNAL_SEQ_BLACKLIST_H */
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