Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vNddO-009YuM-1M for pgsql-hackers@arkaria.postgresql.org; Mon, 24 Nov 2025 20:58:06 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1vNddM-004IK4-3A for pgsql-hackers@arkaria.postgresql.org; Mon, 24 Nov 2025 20:58:05 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vNddM-004IJw-2C for pgsql-hackers@lists.postgresql.org; Mon, 24 Nov 2025 20:58:04 +0000 Received: from fout-a6-smtp.messagingengine.com ([103.168.172.149]) by magus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vNddK-001ISR-2j for pgsql-hackers@postgresql.org; Mon, 24 Nov 2025 20:58:04 +0000 Received: from phl-compute-05.internal (phl-compute-05.internal [10.202.2.45]) by mailfout.phl.internal (Postfix) with ESMTP id C6006EC01A2; Mon, 24 Nov 2025 15:58:00 -0500 (EST) Received: from phl-mailfrontend-01 ([10.202.2.162]) by phl-compute-05.internal (MEProxy); Mon, 24 Nov 2025 15:58:00 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=anarazel.de; h= cc:cc:content-type:content-type:date:date:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:subject :subject:to:to; s=fm3; t=1764017880; x=1764104280; bh=8AjTCmi+gf vLZLeGpGEr/CwV19ksR902Zb2tAmc+XYQ=; b=e3gSumFtyFEKliLxhwt/Xv9/9c Ys3yZ/fZP6cq0MOhaU5lbAeg2MTXNprk53EamwjOpun6j3kBB5OlokWbUQS7C++E L8ovlXEQkcQzqRdVyuXR5BPyasVWZvBr/qpqnyq5v4/mekuo8Xwua0SnGXXXgaHd C1ciqAPne8deuTUxARdGucg9ZEysqyk5r/af+k9XbPQqrYAv3fvGPtA/wYDPT+WY mBuxLlc7iz4uCQeF3wOvyEja8QNyArrVzymh1leJWKaIVH3H0lUm0OgpltNvNJc/ 9JqSIzHknJ+UAzSWudqZaXnzucZdJgoB/F1+GcdZiufiA5twLVPlcWeUQzVw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-type:content-type:date:date :feedback-id:feedback-id:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:subject:subject:to :to:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; t= 1764017880; x=1764104280; bh=8AjTCmi+gfvLZLeGpGEr/CwV19ksR902Zb2 tAmc+XYQ=; b=J7459m3xLBvSsME7VesEM7sK2sAXnmX1vtANgr04V0QHovoZsX9 pyYwRolKjZd+GzxE4mDO9Nwtz1irLT6VpwzvhZ3cHzG27ba9Ra1uKjfDCiVYCXVU v9vM350WQWL6ehePJB0f/VJajsL4mRb/WU95Du/uozmveT+R3fSNMZPiAMvftKW0 kzjzAWE21RM029mBouCcoINc3IToE9nhZLz9VrC04OSwGjJIoG2UFinSRdY82qYe gji9SpuD9S/J1D9FsQjxBc2V7gBzkGm0hBYnDd4fvaPFdkvNgQC+WCOk4BatQa0M z05w2d9dzC5M+WB+1mcxy5t3RNqXilWveHA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtdeggddvfeeliedvucetufdoteggodetrf dotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfurfetoffkrfgpnffqhgenuceu rghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujf gurhepfffhvfevuffkfhggtggujgesthdtsfdttddtvdenucfhrhhomheptehnughrvghs ucfhrhgvuhhnugcuoegrnhgurhgvshesrghnrghrrgiivghlrdguvgeqnecuggftrfgrth htvghrnhepfeffgfelvdffgedtveelgfdtgefghfdvkefggeetieevjeekteduleevjefh ueegnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomheprg hnughrvghssegrnhgrrhgriigvlhdruggvpdhnsggprhgtphhtthhopeekpdhmohguvgep shhmthhpohhuthdprhgtphhtthhopegsohgvkhgvfihurhhmodhpohhsthhgrhgvshesgh hmrghilhdrtghomhdprhgtphhtthhopehmvghlrghnihgvphhlrghgvghmrghnsehgmhgr ihhlrdgtohhmpdhrtghpthhtohepmhhitghhrggvlhdrphgrqhhuihgvrhesghhmrghilh drtghomhdprhgtphhtthhopehrohgsvghrthhmhhgrrghssehgmhgrihhlrdgtohhmpdhr tghpthhtohepthhhohhmrghsrdhmuhhnrhhosehgmhgrihhlrdgtohhmpdhrtghpthhtoh ephhhlihhnnhgrkhgrsehikhhirdhfihdprhgtphhtthhopehnohgrhheslhgvrggusgho rghtrdgtohhmpdhrtghpthhtohepphhgshhqlhdqhhgrtghkvghrshesphhoshhtghhrvg hsqhhlrdhorhhg X-ME-Proxy: Feedback-ID: id4a34324:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 24 Nov 2025 15:58:00 -0500 (EST) Date: Mon, 24 Nov 2025 15:57:59 -0500 From: Andres Freund To: Matthias van de Meent Cc: pgsql-hackers@postgresql.org, Melanie Plageman , Thomas Munro , Heikki Linnakangas , Noah Misch , Robert Haas , Michael Paquier Subject: Re: Buffer locking is special (hints, checksums, AIO writes) Message-ID: References: <6kmid26do57ykqfpvq6iieniy4djsymhrypkjccazq5g4bbe6a@2y6owwv7qpex> <3je3ahgf7rrmmurxo6hnlhg5d3ffwfrtjwjxd6jm5srlv5iebp@vxqk5qtgmowr> <3w7v3w6a57jnssokap4k7thoekig72flnyhd4wp3yftzdd7lm7@f6lpcfen6hr7> <6rgb2nvhyvnszz4ul3wfzlf5rheb2kkwrglthnna7qhe24onwr@vw27225tkyar> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6rgb2nvhyvnszz4ul3wfzlf5rheb2kkwrglthnna7qhe24onwr@vw27225tkyar> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk Hi, On 2025-11-19 21:47:49 -0500, Andres Freund wrote: > 0001: A straight-up bugfix in lwlock.c - albeit for a bug that seems currently > effectively harmless. Does anybody have opinions about whether to backpatch this fix? Given that it has no real consequences I'm mildly inclined not to, but maybe there are cases where the additional wait list lock cycle matters? Greetings, Andres Freund