From patchwork Sat Aug 7 10:01:30 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 118163 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by demeter.kernel.org (8.14.4/8.14.3) with ESMTP id o77A803e027582 for ; Sat, 7 Aug 2010 10:08:35 GMT Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 397839F009 for ; Sat, 7 Aug 2010 03:08:00 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from fireflyinternet.com (server109-228-4-14.live-servers.net [109.228.4.14]) by gabe.freedesktop.org (Postfix) with ESMTP id E239D9E8FD for ; Sat, 7 Aug 2010 03:02:54 -0700 (PDT) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.66.37; Received: from arrandale.alporthouse.com (unverified [78.156.66.37]) by fireflyinternet.com (Firefly Internet SMTP) with ESMTP id 2253628-1500048 for multiple; Sat, 07 Aug 2010 11:05:52 +0100 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Sat, 7 Aug 2010 11:01:30 +0100 Message-Id: <1281175299-1379-12-git-send-email-chris@chris-wilson.co.uk> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1281175299-1379-1-git-send-email-chris@chris-wilson.co.uk> References: <1281175299-1379-1-git-send-email-chris@chris-wilson.co.uk> X-Originating-IP: 78.156.66.37 Subject: [Intel-gfx] [PATCH 11/20] drm/i915: Truncate the shmem backing pages on purge X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Sat, 07 Aug 2010 10:08:35 +0000 (UTC) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 9211dda..6865202 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1496,9 +1496,16 @@ i915_gem_object_truncate(struct drm_gem_object *obj) struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); struct inode *inode; + /* Our goal here is to return as much of the memory as + * is possible back to the system as we are called from OOM. + * To do this we must instruct the shmfs to drop all of its + * backing pages, *now*. Here we mirror the actions taken + * when by shmem_delete_inode() to release the backing store. + */ inode = obj->filp->f_path.dentry->d_inode; - if (inode->i_op->truncate) - inode->i_op->truncate (inode); + truncate_inode_pages(inode->i_mapping, 0); + if (inode->i_op->truncate_range) + inode->i_op->truncate_range(inode, 0, (loff_t)-1); obj_priv->madv = __I915_MADV_PURGED; }