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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2021-03-24 18:02:16 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-22 17:08:57 -0400 |
| commit | e751c01a8ee1ca934cc0953e2e77ad4ea3e64d5e (patch) | |
| tree | 9930602caa160b05f2e62925c86192ae1ab9bc31 /fs/bcachefs/tests.c | |
| parent | 4cf91b0270dc16a6637db4c200c7fb745b941065 (diff) | |
bcachefs: Start using bpos.snapshot field
This patch starts treating the bpos.snapshot field like part of the key
in the btree code:
* bpos_successor() and bpos_predecessor() now include the snapshot field
* Keys in btrees that will be using snapshots (extents, inodes, dirents
and xattrs) now always have their snapshot field set to U32_MAX
The btree iterator code gets a new flag, BTREE_ITER_ALL_SNAPSHOTS, that
determines whether we're iterating over keys in all snapshots or not -
internally, this controlls whether bkey_(successor|predecessor)
increment/decrement the snapshot field, or only the higher bits of the
key.
We add a new member to struct btree_iter, iter->snapshot: when
BTREE_ITER_ALL_SNAPSHOTS is not set, iter->pos.snapshot should always
equal iter->snapshot, which will be 0 for btrees that don't use
snapshots, and alsways U32_MAX for btrees that will use snapshots
(until we enable snapshot creation).
This patch also introduces a new metadata version number, and compat
code for reading from/writing to older versions - this isn't a forced
upgrade (yet).
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/tests.c')
| -rw-r--r-- | fs/bcachefs/tests.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/bcachefs/tests.c b/fs/bcachefs/tests.c index 286587a118fe..3de48c593963 100644 --- a/fs/bcachefs/tests.c +++ b/fs/bcachefs/tests.c @@ -483,6 +483,7 @@ static int rand_insert(struct bch_fs *c, u64 nr) for (i = 0; i < nr; i++) { bkey_cookie_init(&k.k_i); k.k.p.offset = test_rand(); + k.k.p.snapshot = U32_MAX; ret = __bch2_trans_do(&trans, NULL, NULL, 0, __bch2_btree_insert(&trans, BTREE_ID_xattrs, &k.k_i)); |