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[IPv6:2a02:a213:2b80:f000::12] (unknown [IPv6:2a02:a213:2b80:f000::12]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by syrinx.knorrie.org (Postfix) with ESMTPSA id 96AAC5C73A78B; Wed, 20 Nov 2019 16:56:28 +0100 (CET) Subject: Re: [PATCH 3.16 81/83] btrfs: partially apply b8b93addde To: Ben Hutchings , linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: akpm@linux-foundation.org, Denis Kirjanov References: From: Hans van Kranenburg Openpgp: preference=signencrypt Autocrypt: addr=hans@knorrie.org; keydata= mQINBFo2pooBEADwTBe/lrCa78zuhVkmpvuN+pXPWHkYs0LuAgJrOsOKhxLkYXn6Pn7e3xm+ ySfxwtFmqLUMPWujQYF0r5C6DteypL7XvkPP+FPVlQnDIifyEoKq8JZRPsAFt1S87QThYPC3 mjfluLUKVBP21H3ZFUGjcf+hnJSN9d9MuSQmAvtJiLbRTo5DTZZvO/SuQlmafaEQteaOswme DKRcIYj7+FokaW9n90P8agvPZJn50MCKy1D2QZwvw0g2ZMR8yUdtsX6fHTe7Ym+tHIYM3Tsg 2KKgt17NTxIqyttcAIaVRs4+dnQ23J98iFmVHyT+X2Jou+KpHuULES8562QltmkchA7YxZpT 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vT3RH0/CpPJgveWV5xDOKuhD8j5l7FME+t2RWP+gyLid6dE0C7J03ir90PlTEkMEHEzyJMPt OhO05Phy+d51WPTo1VSKxhL4bsWddHLfQoXW8RQ388Q69JG4m+JhNH/XvWe3aQFpYP+GZuzO hkMez0lHCaVOOLBSKHkAHh9i0/pH+/3hfEa4NsoHCpyy Message-ID: Date: Wed, 20 Nov 2019 16:56:28 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/20/19 4:38 PM, Ben Hutchings wrote: > 3.16.78-rc1 review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Hans van Kranenburg Thanks for picking this up! Can you please use my work email, lowercase hans.van.kranenburg@mendix.com for this one and for the Cc: line in the second one from Qu? Thanks, Hans > > Extracted from commit b8b93addde "btrfs: cleanup 64bit/32bit divs, > provably bounded values", to allow commits 793ff2c88c6 "btrfs: > volumes: Cleanup stripe size calculation" and baf92114c7 "btrfs: > alloc_chunk: fix more DUP stripe size handling" to apply cleanly. > > [bwh: Add patch description] > Signed-off-by: Ben Hutchings > --- > fs/btrfs/volumes.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c > index 4aa1a20fc5d7..b4b98a75ca8b 100644 > --- a/fs/btrfs/volumes.c > +++ b/fs/btrfs/volumes.c > @@ -4274,8 +4274,8 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans, > */ > if (stripe_size * data_stripes > max_chunk_size) { > u64 mask = (1ULL << 24) - 1; > - stripe_size = max_chunk_size; > - do_div(stripe_size, data_stripes); > + > + stripe_size = div_u64(max_chunk_size, data_stripes); > > /* bump the answer up to a 16MB boundary */ > stripe_size = (stripe_size + mask) & ~mask; >