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bcachefs: bch2_bucket_alloc_trans_early -> for_each_btree_key_norestart

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Nested btree transactions require special care, and an upcoming patch is
going to add assertions to that effect. We don't want to be using them
unnecessarily, so this patch switches bch2_bucket_trans_early() to not
handle transaction restarts.

This patch also adds a cursor so that on transaction restart we can
continue scanning from where the previous search for an empty bucket
left off.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet
2022-07-17 02:46:46 -04:00
committed by Kent Overstreet
parent 7903e3d2d7
commit db346e7120
1 changed files with 1 additions and 1 deletions
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2
fs/bcachefs/alloc_foreground.c
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@@ -406,7 +406,7 @@ bch2_bucket_alloc_early(struct btree_trans *trans,
u64 alloc_cursor = max(alloc_start, READ_ONCE(ca->alloc_cursor));
int ret;
again:
for_each_btree_key(trans, iter, BTREE_ID_alloc, POS(ca->dev_idx, alloc_cursor),
for_each_btree_key_norestart(trans, iter, BTREE_ID_alloc, POS(ca->dev_idx, alloc_cursor),
BTREE_ITER_SLOTS, k, ret) {
struct bch_alloc_v4 a;