From patchwork Fri Apr 29 10:08:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 568435 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A46E8C433F5 for ; Fri, 29 Apr 2022 10:08:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356876AbiD2KL5 (ORCPT ); Fri, 29 Apr 2022 06:11:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42170 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238897AbiD2KL4 (ORCPT ); Fri, 29 Apr 2022 06:11:56 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A8161C6648 for ; Fri, 29 Apr 2022 03:08:38 -0700 (PDT) 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 smtp-out2.suse.de (Postfix) with ESMTPS id 522E91F37F; Fri, 29 Apr 2022 10:08:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1651226917; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=LTgpgelFxlKH+EGvpPO5YVBEsmctmfJglLzDPioPa4c=; b=moSZO8XUk7edZbD6CUR9KFv5bvRj6ockYOniLg0ER2gDkmNdKSCGiu/CRzOxtCg5HfX2vK XTR2Qe9cVNRDklvO4g8cKz8QQ/avYHvDEqkJlKM5w56mQ9B/Fss/AiQpBgzWIwTEzaphg6 ov2yrnlIdPr0C8w/5Y0xJIRVf67e8d4= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1651226917; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=LTgpgelFxlKH+EGvpPO5YVBEsmctmfJglLzDPioPa4c=; b=xHR4nyZuOC6yw3eIABDOgBE0HnGmLsB78JPefhbbmlVXR9cJOWaUb4P6ZMM+i5+64mSrEa bZJbIcGNlRmTVgDw== 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 22B4813AE0; Fri, 29 Apr 2022 10:08:37 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id z4OCByW5a2JiFwAAMHmgww (envelope-from ); Fri, 29 Apr 2022 10:08:37 +0000 From: Thomas Zimmermann To: javierm@redhat.com, sam@ravnborg.org, daniel@ffwll.ch, deller@gmx.de, airlied@linux.ie, maarten.lankhorst@linux.intel.com Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, Thomas Zimmermann Subject: [PATCH v4 0/5] fbdev: Decouple deferred I/O from struct page Date: Fri, 29 Apr 2022 12:08:29 +0200 Message-Id: <20220429100834.18898-1-tzimmermann@suse.de> X-Mailer: git-send-email 2.36.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Rework the fbdev deferred-I/O to not interfere with fields of struct page. All references from deferred-I/O code to fields in struct page are gone. The rsp state is held in a separate pageref structure. v4: * fix locking in fb_mmap() (Dan) * fix commit-message style (Javier) v3: * rename pagelist to pagereflist (Sam) * use pageref->offset over page->index (Javier) v2: * split off from a larger patchset [1] [1] https://lore.kernel.org/dri-devel/20220303205839.28484-1-tzimmermann@suse.de/ Thomas Zimmermann (5): fbdev: Put mmap for deferred I/O into drivers fbdev: Track deferred-I/O pages in pageref struct fbdev: Refactor implementation of page_mkwrite fbdev: Rename pagelist to pagereflist for deferred I/O fbdev: Use pageref offset for deferred-I/O writeback drivers/gpu/drm/drm_fb_helper.c | 15 +- drivers/gpu/drm/vmwgfx/vmwgfx_fb.c | 10 +- drivers/hid/hid-picolcd_fb.c | 3 +- drivers/staging/fbtft/fbtft-core.c | 21 ++- drivers/video/fbdev/broadsheetfb.c | 27 ++-- drivers/video/fbdev/core/fb_defio.c | 212 +++++++++++++++++-------- drivers/video/fbdev/core/fbmem.c | 22 +-- drivers/video/fbdev/hecubafb.c | 4 +- drivers/video/fbdev/hyperv_fb.c | 10 +- drivers/video/fbdev/metronomefb.c | 23 ++- drivers/video/fbdev/sh_mobile_lcdcfb.c | 27 ++-- drivers/video/fbdev/smscufx.c | 13 +- drivers/video/fbdev/ssd1307fb.c | 4 +- drivers/video/fbdev/udlfb.c | 18 +-- drivers/video/fbdev/xen-fbfront.c | 10 +- include/drm/drm_fb_helper.h | 3 +- include/linux/fb.h | 17 +- 17 files changed, 265 insertions(+), 174 deletions(-) base-commit: 0e7deff6446a4ba2c75f499a0bfa80cd6a15c129