From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f71.google.com (mail-pg0-f71.google.com [74.125.83.71]) by kanga.kvack.org (Postfix) with ESMTP id 350436B026C for ; Wed, 23 May 2018 12:57:30 -0400 (EDT) Received: by mail-pg0-f71.google.com with SMTP id q71-v6so3571898pgq.17 for ; Wed, 23 May 2018 09:57:30 -0700 (PDT) Received: from mail-sor-f65.google.com (mail-sor-f65.google.com. [209.85.220.65]) by mx.google.com with SMTPS id x5-v6sor4665634pgr.94.2018.05.23.09.57.28 for (Google Transport Security); Wed, 23 May 2018 09:57:28 -0700 (PDT) From: Huaisheng Ye Subject: [RFC PATCH v3 4/9] fs/btrfs/extent_io: update usage of zone modifiers Date: Thu, 24 May 2018 00:57:19 +0800 Message-Id: <1527094639-4562-1-git-send-email-yehs2007@gmail.com> Sender: owner-linux-mm@kvack.org List-ID: To: akpm@linux-foundation.org, linux-mm@kvack.org Cc: mhocko@suse.com, willy@infradead.org, hch@lst.de, vbabka@suse.cz, mgorman@techsingularity.net, kstewart@linuxfoundation.org, gregkh@linuxfoundation.org, colyli@suse.de, chengnt@lenovo.com, hehy1@lenovo.com, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, xen-devel@lists.xenproject.org, linux-btrfs@vger.kernel.org, Huaisheng Ye , Chris Mason , Josef Bacik , David Sterba , Christoph Hellwig From: Huaisheng Ye Use __GFP_ZONE_MASK to replace (__GFP_DMA32 | __GFP_HIGHMEM). In function alloc_extent_state, it is obvious that __GFP_DMA is not the expecting zone type. ___GFP_DMA, ___GFP_HIGHMEM and ___GFP_DMA32 have been deleted from GFP bitmasks, the bottom three bits of GFP mask is reserved for storing encoded zone number. __GFP_DMA, __GFP_HIGHMEM and __GFP_DMA32 should not be operated with each others by OR. Use GFP_NORMAL() to clear bottom 3 bits of GFP bitmaks. Signed-off-by: Huaisheng Ye Cc: Chris Mason Cc: Josef Bacik Cc: David Sterba Cc: Christoph Hellwig --- fs/btrfs/extent_io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index e99b329..f41fc61 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -220,7 +220,7 @@ static struct extent_state *alloc_extent_state(gfp_t mask) * The given mask might be not appropriate for the slab allocator, * drop the unsupported bits */ - mask &= ~(__GFP_DMA32|__GFP_HIGHMEM); + mask = GFP_NORMAL(mask); state = kmem_cache_alloc(extent_state_cache, mask); if (!state) return state; -- 1.8.3.1