From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 15314C5ACAE for ; Wed, 11 Sep 2019 16:45:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E539020838 for ; Wed, 11 Sep 2019 16:45:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729182AbfIKQp0 (ORCPT ); Wed, 11 Sep 2019 12:45:26 -0400 Received: from mx2.suse.de ([195.135.220.15]:34382 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728896AbfIKQp0 (ORCPT ); Wed, 11 Sep 2019 12:45:26 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 9FA22AF81; Wed, 11 Sep 2019 16:45:24 +0000 (UTC) From: Goldwyn Rodrigues To: linux-fsdevel@vger.kernel.org Cc: linux-ext4@vger.kernel.org, linux-btrfs@vger.kernel.org, hch@infradead.org, andres@anarazel.de, david@fromorbit.com, riteshh@linux.ibm.com, linux-f2fs-devel@lists.sourceforge.net Subject: Fix inode sem regression for nowait Date: Wed, 11 Sep 2019 11:45:14 -0500 Message-Id: <20190911164517.16130-1-rgoldwyn@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20190911093926.pfkkx25mffzeuo32@alap3.anarazel.de> References: <20190911093926.pfkkx25mffzeuo32@alap3.anarazel.de> Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org This changes the way we acquire the inode semaphore when the I/O is marked with IOCB_NOWAIT. The regression was discovered in AIM7 and later by Andres in ext4. This has been fixed in XFS by 942491c9e6d6 ("xfs: fix AIM7 regression") I realized f2fs and btrfs also have the same code and need to be updated. Regards, -- Goldwyn