diff options
| author | Kent Overstreet <kent.overstreet@linux.dev> | 2025-02-07 01:34:00 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2025-03-14 21:02:15 -0400 |
| commit | 88d961b518826e5e98e171d876b87b642f12de6a (patch) | |
| tree | 56ba863265961af2984c1197c02974d6d6601581 /fs/bcachefs/backpointers.h | |
| parent | 69bd8a927702cec62b023948be22ac817d2643a7 (diff) | |
bcachefs: bcachefs_metadata_version_stripe_backpointers
Stripes now have backpointers.
This is needed for proper scrub - stripe checksums need to be verified,
separately from extents within the stripe, since a block may not be full
of live extents but it's still needed for reconstruct.
And this will be needed for (efficient) evacuate/repair paths.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/backpointers.h')
| -rw-r--r-- | fs/bcachefs/backpointers.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/fs/bcachefs/backpointers.h b/fs/bcachefs/backpointers.h index 7786731d4ada..16575dbc5736 100644 --- a/fs/bcachefs/backpointers.h +++ b/fs/bcachefs/backpointers.h @@ -152,7 +152,20 @@ static inline void bch2_extent_ptr_to_bp(struct bch_fs *c, struct bkey_i_backpointer *bp) { bkey_backpointer_init(&bp->k_i); - bp->k.p = POS(p.ptr.dev, ((u64) p.ptr.offset << MAX_EXTENT_COMPRESS_RATIO_SHIFT) + p.crc.offset); + bp->k.p.inode = p.ptr.dev; + + if (k.k->type != KEY_TYPE_stripe) + bp->k.p.offset = ((u64) p.ptr.offset << MAX_EXTENT_COMPRESS_RATIO_SHIFT) + p.crc.offset; + else { + /* + * Put stripe backpointers where they won't collide with the + * extent backpointers within the stripe: + */ + struct bkey_s_c_stripe s = bkey_s_c_to_stripe(k); + bp->k.p.offset = ((u64) (p.ptr.offset + le16_to_cpu(s.v->sectors)) << + MAX_EXTENT_COMPRESS_RATIO_SHIFT) - 1; + } + bp->v = (struct bch_backpointer) { .btree_id = btree_id, .level = level, |