Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.84_2) (envelope-from ) id 1b5IJi-0001VH-Hz for pgsql-committers@arkaria.postgresql.org; Tue, 24 May 2016 19:48:38 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.84_2) (envelope-from ) id 1b5IJi-0007yw-4g for pgsql-committers@arkaria.postgresql.org; Tue, 24 May 2016 19:48:38 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1b5IJU-00079q-GP for pgsql-committers@postgresql.org; Tue, 24 May 2016 19:48:24 +0000 Received: from mahout.postgresql.org ([2001:4800:1501:1::227]) by magus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1b5IJQ-0003pu-RG for pgsql-committers@postgresql.org; Tue, 24 May 2016 19:48:23 +0000 Received: from gemulon.postgresql.org ([2001:4800:1501:1::198]) by mahout.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.84_2) (envelope-from ) id 1b5IJP-0006Uh-2g for pgsql-committers@postgresql.org; Tue, 24 May 2016 19:48:19 +0000 Received: from git by gemulon.postgresql.org with local (Exim 4.84_2) (envelope-from ) id 1b5IJO-0002PC-E5 for pgsql-committers@postgresql.org; Tue, 24 May 2016 19:48:18 +0000 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 To: pgsql-committers@postgresql.org From: Tom Lane Subject: pgsql: Fetch XIDs atomically during vac_truncate_clog(). Message-Id: Date: Tue, 24 May 2016 19:48:18 +0000 X-Pg-Spam-Score: -8.3 (--------) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-committers Precedence: bulk Sender: pgsql-committers-owner@postgresql.org RmV0Y2ggWElEcyBhdG9taWNhbGx5IGR1cmluZyB2YWNfdHJ1bmNhdGVfY2xv ZygpLgoKQmVjYXVzZSB2YWNfdXBkYXRlX2RhdGZyb3plbnhpZCgpIHVwZGF0 ZXMgZGF0ZnJvemVueGlkIGFuZCBkYXRtaW5teGlkCmluLXBsYWNlLCBpdCdz IHVuc2FmZSB0byBhc3N1bWUgdGhhdCBzdWNjZXNzaXZlIHJlYWRzIG9mIHRo b3NlIHZhbHVlcyB3aWxsCmdpdmUgY29uc2lzdGVudCByZXN1bHRzLiAgRmV0 Y2ggZWFjaCBvbmUganVzdCBvbmNlIHRvIGVuc3VyZSBzYW5lIGJlaGF2aW9y CmluIHRoZSBtaW5pbXVtIGNhbGN1bGF0aW9uLiAgTm90ZWQgd2hpbGUgcmV2 aWV3aW5nIEFsZXhhbmRlciBLb3JvdGtvdidzCnBhdGNoIGluIHRoZSBzYW1l IGFyZWEuCgpEaXNjdXNzaW9uOiA8ODU2NC4xNDY0MTE2NDczQHNzcy5wZ2gu cGEudXM+CgpCcmFuY2gKLS0tLS0tClJFTDlfNV9TVEFCTEUKCkRldGFpbHMK LS0tLS0tLQpodHRwOi8vZ2l0LnBvc3RncmVzcWwub3JnL3BnL2NvbW1pdGRp ZmYvYmJiZTJjOTdlYmEzN2ZkOGE5ZTU4MGE1OTZmNDg5MzVmM2Q5ZGVkOAoK TW9kaWZpZWQgRmlsZXMKLS0tLS0tLS0tLS0tLS0Kc3JjL2JhY2tlbmQvY29t bWFuZHMvdmFjdXVtLmMgfCAyOCArKysrKysrKysrKysrKysrKystLS0tLS0t LS0tCjEgZmlsZSBjaGFuZ2VkLCAxOCBpbnNlcnRpb25zKCspLCAxMCBkZWxl dGlvbnMoLSkKCgotLSAKU2VudCB2aWEgcGdzcWwtY29tbWl0dGVycyBtYWls aW5nIGxpc3QgKHBnc3FsLWNvbW1pdHRlcnNAcG9zdGdyZXNxbC5vcmcpClRv IG1ha2UgY2hhbmdlcyB0byB5b3VyIHN1YnNjcmlwdGlvbjoKaHR0cDovL3d3 dy5wb3N0Z3Jlc3FsLm9yZy9tYWlscHJlZi9wZ3NxbC1jb21taXR0ZXJzCg==