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a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1662336576; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=U7TFSYgKmn3qgFt6ZLsqrbzmsKcOkS+DPovMc19KCl4=; b=e4sHwA66mG7GJE8Zjta8sFmgbLPQohVY0E4aJr1J1RkPaPFgf6Zg5VqwY6lcMt6knj3IG9 g/k8w4iaohEYviBw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id C0089139C7; Mon, 5 Sep 2022 00:09:34 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id rf7MHj4+FWOIagAAMHmgww (envelope-from ); Mon, 05 Sep 2022 00:09:34 +0000 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 From: "NeilBrown" To: "Trond Myklebust" Cc: "anna@kernel.org" , "linux-nfs@vger.kernel.org" , "jlayton@kernel.org" , "bcodding@redhat.com" Subject: Re: [PATCH 0/2] NFS: limit use of ACCESS cache for negative responses In-reply-to: <2e5b8af112d8440757681a1f71de4ec0cc57ae90.camel@hammerspace.com> References: <165110909570.7595.8578730126480600782.stgit@noble.brown>, <165274590805.17247.12823419181284113076@noble.neil.brown.name>, <72f091ceaaf15069834eb200c04f0630eca7eaef.camel@hammerspace.com>, <165274805538.17247.18045261877097040122@noble.neil.brown.name>, , <165274950799.17247.7605561502483278140@noble.neil.brown.name>, <3ec50603479c7ee60cfa269aa06ae151e3ebc447.camel@hammerspace.com>, <165275056203.17247.1826100963816464474@noble.neil.brown.name>, , , , <166155716162.27490.17801636432417958045@noble.neil.brown.name>, , <166172952853.27490.16907220841440758560@noble.neil.brown.name>, <22601f2b7ced45d3b5f44951970f79c22490aced.camel@kernel.org>, <166219906850.28768.1525969921769808093@noble.neil.brown.name>, <1cfb40103f3f539973587f4565af79d5dc439096.camel@hammerspace.com>, <166233410596.1168.312161459644850792@noble.neil.brown.name>, <2e5b8af112d8440757681a1f71de4ec0cc57ae90.camel@hammerspace.com> Date: Mon, 05 Sep 2022 10:09:31 +1000 Message-id: <166233657158.1168.394810496332729625@noble.neil.brown.name> X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org T24gTW9uLCAwNSBTZXAgMjAyMiwgVHJvbmQgTXlrbGVidXN0IHdyb3RlOgo+IE9uIE1vbiwgMjAy Mi0wOS0wNSBhdCAwOToyOCArMTAwMCwgTmVpbEJyb3duIHdyb3RlOgo+ID4gCj4gPiBXaGVuIEkg d2FzIGZpcnN0IHByZXNlbnRlZCB3aXRoIHRoaXMgcHJvYmxlbSBJIHRob3VnaHQgbG9nb3V0L2xv Z2luCj4gPiB3YXMKPiA+IHRoZSBhbnN3ZXIgYW5kIGV2ZW4gcHJvdmlkZWQgYSBwYXRjaCB3aGlj aCB3b3VsZCBtZWFuIGRpZmZlcmVudAo+ID4gbG9naW5zCj4gPiBnb3QgZGlmZmVyZW50IGNhY2hl IGtleXMuwqAgVGhpcyB3YXNuJ3QgdmVyeSB3ZWxsIHJlY2VpdmVkIGJlY2F1c2UgaXQKPiA+IHVz ZWQgdG8gd29yayB3aXRob3V0IGxvZyBvdXQvaW4gKGJlY2F1c2Ugd2UgZGlkbid0IGNhY2hlIGFj Y2Vzcwo+ID4gaW5kZWZpbml0ZWx5KSwgYnV0IHRoZSBraWxsZXIgd2FzIHRoYXQgaXQgZGlkbid0 IGV2ZW4gd29yayByZWxpYWJseSAtCj4gPiBiZWNhdXNlIG9mIHByb3BhZ2F0aW9uIHZhcmlhYmls aXR5Lgo+IAo+IFRoZW4gdGhlIG9udXMgaXMgdXBvbiB5b3UgYW5kIHRoZSBwZW9wbGUgd2hvIGRv bid0IHdhbnQgdGhlIHR3bwo+IHByb3Bvc2VkIHNvbHV0aW9ucyB0byBmaWd1cmUgb3V0IG5ldyBv bmVzLiBUaW1lb3V0cyBhcmUgbm90IGFjY2VwdGFibGUuCgpXaHkgbm90PyAgVGhleSBoYXZlIGFs d2F5cyBiZWVuIHBhcnQgb2YgTkZTLgoKQnV0IGxldCdzIGZvcmdldCBhYm91dCB0aW1lb3V0cyBm b3IgdGhlIG1vbWVudC4KWW91IHN0aWxsIGhhdmVuJ3QgYW5zd2VyZWQgbXkgcXVlc3Rpb246ICBX aGF0IGlzIHRoZSBjb3N0IG9mIG5vdCBjYWNoaW5nCm5lZ2F0aXZlIGFjY2VzcyByZXN1bHRzPz8K Ck5laWxCcm93bgo=