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Stop checking head state in the merge hook.

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Now that all merging go through try_acquire_edata_neighbor, the mergeablility
checks (including head state checking) are done before reaching the merge hook.
In other words, merge hook will never be called if the head state doesn't agree.
This commit is contained in:
Qi Wang 2021-03-11 23:41:51 -08:00 • committed by Qi Wang
parent 49b7d7f0a4
commit add636596a
5 changed files with 42 additions and 56 deletions
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4
src/extent.c
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@ -1189,8 +1189,8 @@ extent_merge_impl(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks, edata_t *a,
emap_assert_mapped(tsdn, pac->emap, b);
bool err = ehooks_merge(tsdn, ehooks, edata_base_get(a),
edata_size_get(a), edata_is_head_get(a), edata_base_get(b),
edata_size_get(b), edata_is_head_get(b), edata_committed_get(a));
edata_size_get(a), edata_base_get(b), edata_size_get(b),
edata_committed_get(a));
if (err) {
return true;