From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BCA912D24B0 for ; Mon, 8 Sep 2025 19:40:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757360447; cv=none; b=aqHFFiRDj+X6rTyYMYERhWnpe6B0M4x7YLLGiC7EsSfurpjqj2BBNshLIdSVSgk561aIuguW3u5fikJzQKLQ5fDpO34ddTxYL1r0tE/qwM0LqPsInwC6PyuLcsrF/wbJzwwibd80Tmx4E+GF2Y6mqdofGPYHYMTkIXhXqzs8gdk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757360447; c=relaxed/simple; bh=wjhCRMCOJUDzxMqcotsLGOyKlQmJTciT4rATczNnwVk=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=Wj3z2sk3qkbStCdUCUR6p4EgZfiNwuVg9yH5Q69KT4+jSf7hv4BWSNcVbAhcwDRrE5oN3KJ1Cp8ri1MMB6uMC7zXMjD5hFl9vijUNhbPWagJmIPvKoitAY3d+yB/RNVbcZKRyHZ7E1SuOAJv6XKNcpVwBljqITO+Cxw0UvCOTNE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tDQnf9i6; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="tDQnf9i6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A1A5DC4CEF1; Mon, 8 Sep 2025 19:40:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1757360447; bh=wjhCRMCOJUDzxMqcotsLGOyKlQmJTciT4rATczNnwVk=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=tDQnf9i6ccjIvQ1t/4drzG2da7/Q5zWW5H3lCjoes5+TheiKZwc4sB5TLxPCJRRw+ L4/Q/CF/HS+T4aWacVJCaTSBvTcfh07BGhTq9BBEOTEAsyoz8tV+UxoOaKC+H33Gxb YBm2p1A4w7pX6Mv/o33gOzC7JhzSkEGvwxBNeVCOPTR/hFUuDjWlCzvMcY56OTFvat NXGbG+GUYHEGfXk7rr+jCP+Iemq9xc7p3NZChDQtJ77QBZoxrnHDTvM/Q8qkNAn8Up NLYwSlzYOTv2KP1I+lVWrhPb3d6+MvtQpFtWfgSFbKh7yYD8n6w/QrwTLWhWdSAitM sdHClUvLpknOw== Message-ID: <4af61e35dc3a3af9bd25e10c1c02d9d4f43f5db7.camel@kernel.org> Subject: Re: [PATCH 0/2] cleanups in nfs4reovery.c From: Jeff Layton To: NeilBrown , Chuck Lever Cc: Olga Kornievskaia , Dai Ngo , Tom Talpey , linux-nfs@vger.kernel.org Date: Mon, 08 Sep 2025 15:40:45 -0400 In-Reply-To: <20250908014348.329348-1-neilb@ownmail.net> References: <20250908014348.329348-1-neilb@ownmail.net> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv egyjnSsFt7EGoDjdKqr1TS9syJYFjagYtvWk/UfHlW09X+jOh4vYtfX7iYSx/NfqV3W1D7EDi0PqV T2h6v8i8YqsATFPwO4nuiTmL6I40ZofxVd+9wdRI4Db8yUNA4ZSP2nqLcLtFjClYRBoJvRWvsv4lm 0OX6MYPtv76hka8lW4mnRmZqqx3UtfHX/hF/zH24Gj7A6sYKYLCU3YrI2Ogiu7/ksKcl7goQjpvtV 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That will involve moving the lock as close as possib= le > to the operation being locked, and using some standard interfaces=20 > which combine the lock and the lookup. Then changing the mechanics of > taking a lock. >=20 > nfsd4_list_rec_dir() currenty locks a direct and performs a lookup > in a different function to where the lock and lookup results are needed, > and does it even when those are not needed at all. So the first > patch moves the lock and lookup to where it is needed. >=20 > The second patch (arguably) improves the calling protocol for > nfs4_client_to_reclaim(). If people don't like this second patch I'm > happy for it to be dropped. It is the first patch which is particularly > important to me. >=20 > Thanks, > NeilBrown >=20 >=20 > [PATCH 1/2] nfsd: move name lookup out of nfsd4_list_rec_dir() > [PATCH 2/2] nfsd: change nfs4_client_to_reclaim() to allocate data I'm fine with both of these, so: Reviewed-by: Jeff Layton ...this does remind me though: Is it time to switch the default for CONFIG_NFSD_LEGACY_CLIENT_TRACKING to N? It has been a little over a year since we added the Kconfig option (and had it default to Y).