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Fix wrong keysize in PrivateRefCountHash creation.

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In 4b4b680c3 I accidentally used sizeof(PrivateRefCountArray) instead of
sizeof(PrivateRefCountEntry) when creating the refcount overflow
hashtable. As the former is bigger than the latter, this luckily only
resulted in a slightly increased memory usage when many buffers are
pinned in a backend.

Reported-By: Takashi Horikawa
Discussion: 73FA3881462C614096F815F75628AFCD035A48C3@BPXM01GP.gisp.nec.co.jp
Backpatch: 9.5, where thew new ref count infrastructure was introduced
This commit is contained in:
Andres Freund 2016-02-21 22:48:44 -08:00
parent 68d68ff833
commit 815a31cdd1
1 changed files with 1 additions and 1 deletions
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2
src/backend/storage/buffer/bufmgr.c
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@ -2103,7 +2103,7 @@ InitBufferPoolAccess(void)
MemSet(&hash_ctl, 0, sizeof(hash_ctl));
hash_ctl.keysize = sizeof(int32);
hash_ctl.entrysize = sizeof(PrivateRefCountArray);
hash_ctl.entrysize = sizeof(PrivateRefCountEntry);
PrivateRefCountHash = hash_create("PrivateRefCount", 100, &hash_ctl,
HASH_ELEM | HASH_BLOBS);