linux/fs/bcachefs/bbpos.h
Kent Overstreet 23792a712d bcachefs: Run bch2_check_backpointers_to_extents() in multiple passes if necessary
When the extents + reflink btrees don't fit into memory this fsck pass
becomes _much_ slower, since we're doing random lookups.

This patch changes this pass to check how much of the relevant btrees
will fit into memory, and run in multiple passes if needed.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-22 17:09:51 -04:00

49 lines
971 B
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_BBPOS_H
#define _BCACHEFS_BBPOS_H
#include "bkey_methods.h"
struct bbpos {
enum btree_id btree;
struct bpos pos;
};
static inline struct bbpos BBPOS(enum btree_id btree, struct bpos pos)
{
return (struct bbpos) { btree, pos };
}
#define BBPOS_MIN BBPOS(0, POS_MIN)
#define BBPOS_MAX BBPOS(BTREE_ID_NR - 1, POS_MAX)
static inline int bbpos_cmp(struct bbpos l, struct bbpos r)
{
return cmp_int(l.btree, r.btree) ?: bpos_cmp(l.pos, r.pos);
}
static inline struct bbpos bbpos_successor(struct bbpos pos)
{
if (bpos_cmp(pos.pos, SPOS_MAX)) {
pos.pos = bpos_successor(pos.pos);
return pos;
}
if (pos.btree != BTREE_ID_NR) {
pos.btree++;
pos.pos = POS_MIN;
return pos;
}
BUG();
}
static inline void bch2_bbpos_to_text(struct printbuf *out, struct bbpos pos)
{
prt_str(out, bch2_btree_ids[pos.btree]);
prt_char(out, ':');
bch2_bpos_to_text(out, pos.pos);
}
#endif /* _BCACHEFS_BBPOS_H */