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[216.228.112.21]) by smtp.gmail.com with ESMTPSA id u9sm38179744pgc.5.2019.08.01.19.20.19 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 01 Aug 2019 19:20:20 -0700 (PDT) From: john.hubbard@gmail.com X-Google-Original-From: jhubbard@nvidia.com To: Andrew Morton Subject: [PATCH 06/34] drm/i915: convert put_page() to put_user_page*() Date: Thu, 1 Aug 2019 19:19:37 -0700 Message-Id: <20190802022005.5117-7-jhubbard@nvidia.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190802022005.5117-1-jhubbard@nvidia.com> References: <20190802022005.5117-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public X-Mailman-Approved-At: Fri, 02 Aug 2019 08:19:03 +0000 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=fEUR/G5OnJcefSlX4AYJWWcgqHhC+JXxEofDOG22P/4=; b=ZjBIvPI6FGYYuQaoM3wYb6xPjNep6A1qdBgLoxOD+angQDRZC9mN7qZBiGsA4x1Mmk DVp0b1Fq3km/l8LFUFJZZReS797zF2kYF9KrMWUllVa8HFfcUrM1hAE1P/qQjXzrMnOX JxD/xFl+WZHXSEuAGF9iElPEIqC+TRo873joNlnRMAHY9AMqSmLW3nsU27bTpXhcFKV6 4LeM2yIf45e6IoMit2yX6aFzmLhkspb/EkG8Tlqf3bZNN4WeHI7tMYFctQdF6liMtwoJ IvfT9HS49sxx2bYOPNOBswTMjccuTwXWnzyhwEMT1ktty7/Al6mbgY/88Wt++RCGQUor cVVw== X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-fbdev@vger.kernel.org, Jan Kara , kvm@vger.kernel.org, David Airlie , Dave Hansen , Dave Chinner , dri-devel@lists.freedesktop.org, linux-mm@kvack.org, sparclinux@vger.kernel.org, Ira Weiny , ceph-devel@vger.kernel.org, devel@driverdev.osuosl.org, rds-devel@oss.oracle.com, linux-rdma@vger.kernel.org, x86@kernel.org, amd-gfx@lists.freedesktop.org, Christoph Hellwig , Jason Gunthorpe , xen-devel@lists.xenproject.org, devel@lists.orangefs.org, linux-media@vger.kernel.org, John Hubbard , intel-gfx@lists.freedesktop.org, linux-block@vger.kernel.org, =?utf-8?b?SsOpcsO0bWUgR2xpc3Nl?= , linux-rpi-kernel@lists.infradead.org, Rodrigo Vivi , Dan Williams , linux-arm-kernel@lists.infradead.org, linux-nfs@vger.kernel.org, netdev@vger.kernel.org, LKML , linux-xfs@vger.kernel.org, linux-crypto@vger.kernel.org, linux-fsdevel@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: John Hubbard For pages that were retained via get_user_pages*(), release those pages via the new put_user_page*() routines, instead of via put_page() or release_pages(). This is part a tree-wide conversion, as described in commit fc1d8e7cca2d ("mm: introduce put_user_page*(), placeholder versions"). Note that this effectively changes the code's behavior in i915_gem_userptr_put_pages(): it now calls set_page_dirty_lock(), instead of set_page_dirty(). This is probably more accurate. As Christophe Hellwig put it, "set_page_dirty() is only safe if we are dealing with a file backed page where we have reference on the inode it hangs off." [1] [1] https://lore.kernel.org/r/20190723153640.GB720@lst.de Cc: Jani Nikula Cc: Joonas Lahtinen Cc: Rodrigo Vivi Cc: David Airlie Cc: intel-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: John Hubbard --- drivers/gpu/drm/i915/gem/i915_gem_userptr.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c index 528b61678334..c18008d3cc2a 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c @@ -527,7 +527,7 @@ __i915_gem_userptr_get_pages_worker(struct work_struct *_work) } mutex_unlock(&obj->mm.lock); - release_pages(pvec, pinned); + put_user_pages(pvec, pinned); kvfree(pvec); i915_gem_object_put(obj); @@ -640,7 +640,7 @@ static int i915_gem_userptr_get_pages(struct drm_i915_gem_object *obj) __i915_gem_userptr_set_active(obj, true); if (IS_ERR(pages)) - release_pages(pvec, pinned); + put_user_pages(pvec, pinned); kvfree(pvec); return PTR_ERR_OR_ZERO(pages); @@ -663,11 +663,8 @@ i915_gem_userptr_put_pages(struct drm_i915_gem_object *obj, i915_gem_gtt_finish_pages(obj, pages); for_each_sgt_page(page, sgt_iter, pages) { - if (obj->mm.dirty) - set_page_dirty(page); - mark_page_accessed(page); - put_page(page); + put_user_pages_dirty_lock(&page, 1, obj->mm.dirty); } obj->mm.dirty = false;