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Merge pull request #32 from versity/zab/block_rhashtable_insert_fixes

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Zab/block rhashtable insert fixes
This commit is contained in:
Andy Grover
2021-04-13 10:42:17 -07:00
committed by GitHub
parent cb4ed98b3c c3290771a0
commit cbb031bb5d
1 changed files with 7 additions and 1 deletions
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8
kmod/src/block.c
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@@ -286,10 +286,16 @@ static int block_insert(struct super_block *sb, struct block_private *bp)
WARN_ON_ONCE(atomic_read(&bp->refcount) & BLOCK_REF_INSERTED);
retry:
atomic_add(BLOCK_REF_INSERTED, &bp->refcount);
ret = rhashtable_insert_fast(&binf->ht, &bp->ht_head, block_ht_params);
ret = rhashtable_lookup_insert_fast(&binf->ht, &bp->ht_head, block_ht_params);
if (ret < 0) {
atomic_sub(BLOCK_REF_INSERTED, &bp->refcount);
if (ret == -EBUSY) {
/* wait for pending rebalance to finish */
synchronize_rcu();
goto retry;
}
} else {
atomic_inc(&binf->total_inserted);
TRACE_BLOCK(insert, bp);