From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from omr2.cc.ipv6.vt.edu ([2607:b400:92:8400:0:33:fb76:806e] helo=omr2.cc.vt.edu) by shelob.surriel.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91) (envelope-from ) id 1gJhWL-0001vK-RK for kernelnewbies@kernelnewbies.org; Mon, 05 Nov 2018 11:14:33 -0500 Received: from mr2.cc.vt.edu (junk.cc.ipv6.vt.edu [IPv6:2607:b400:92:9:0:9d:8fcb:4116]) by omr2.cc.vt.edu (8.14.4/8.14.4) with ESMTP id wA5GEWp8022695 for ; Mon, 5 Nov 2018 11:14:32 -0500 Received: from mail-qk1-f199.google.com (mail-qk1-f199.google.com [209.85.222.199]) by mr2.cc.vt.edu (8.14.7/8.14.7) with ESMTP id wA5GEQht016189 for ; Mon, 5 Nov 2018 11:14:32 -0500 Received: by mail-qk1-f199.google.com with SMTP id k66so22612253qkf.1 for ; Mon, 05 Nov 2018 08:14:32 -0800 (PST) From: valdis.kletnieks@vt.edu To: "Austin S. Hemmelgarn" Subject: Re: Creating compressed backing_store as swapfile In-Reply-To: <79d0c96a-a0a2-63ec-db91-42fd349d50c1@gmail.com> References: <20181105155815.i654i5ctmfpqhggj@angband.pl> <79d0c96a-a0a2-63ec-db91-42fd349d50c1@gmail.com> Mime-Version: 1.0 Date: Mon, 05 Nov 2018 11:14:23 -0500 Message-ID: <42594.1541434463@turing-police.cc.vt.edu> Cc: Adam Borowski , kernelnewbies@kernelnewbies.org, Pintu Agarwal , open list , linux-mm@kvack.org List-Id: Learn about the Linux kernel List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============0140873004956892501==" Errors-To: kernelnewbies-bounces@kernelnewbies.org Message-ID: <20181105161423.Bj04otcohPQFcL812tG6jCOh6s5mUxXkZZWR_MtpqCI@z> --===============0140873004956892501== Content-Type: multipart/signed; boundary="==_Exmh_1541434463_4003P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit --==_Exmh_1541434463_4003P Content-Type: text/plain; charset=us-ascii On Mon, 05 Nov 2018 11:07:12 -0500, "Austin S. Hemmelgarn" said: > Performance isn't _too_ bad for the BTRFS case though (I've actually > tested this before), just make sure you disable direct I/O mode on the > loop device, otherwise you run the risk of data corruption. Did you test that for random-access. or just sequential read/write? (Also, see the note in my other mail regarding doing a random-access write to the middle of the file...) --==_Exmh_1541434463_4003P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Comment: Exmh version 2.8.0 04/21/2017 iQEVAwUBW+BsX40DS38y7CIcAQKKYwf+JIV/RuxK/7zIKKuu0D7pKRGkvTgaqGWD zEMpdlcFYT3HXlXwL84EElJ4hiE3b1CZKfaDHqyYjLG+Q7WbY93n8Hmu9IFPH3F5 riIz1q62Ik8jfpjKFEoRGibbPutIgCL5y7WAXtdDnGy+1LB3ifHl3qu/Z3AlJzp1 zE8S5Du91C4qF+N0sPN9TyyKPu7+xGgGL3yYYpyRS58wMO6fxOLGwd82tNiv90mc 4wka1FtNq88S+l9WhREscHIctAt57pHStkDcChiFGmpf8Fb6WzATMUWO3JCo4mKr Fd+zC9LB3/8hsaBxTYP88+MBp8qtj+2deUCW0U97pLs/Mz/rLaWK5w== =yLe4 -----END PGP SIGNATURE----- --==_Exmh_1541434463_4003P-- --===============0140873004956892501== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies --===============0140873004956892501==--