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Fri, 12 Feb 2021 09:50:25 +0000 (UTC) Received: from [10.36.114.178] (ovpn-114-178.ams2.redhat.com [10.36.114.178]) by smtp.corp.redhat.com (Postfix) with ESMTP id B18585DEFB; Fri, 12 Feb 2021 09:50:24 +0000 (UTC) Subject: Re: [PATCH] hugetlbfs: Remove unneeded return value of hugetlb_vmtruncate() To: Miaohe Lin , akpm@linux-foundation.org, mike.kravetz@oracle.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20210208084637.47789-1-linmiaohe@huawei.com> From: David Hildenbrand Organization: Red Hat GmbH Message-ID: <379efeaf-a96b-d55d-b542-8fb6fad5ee9a@redhat.com> Date: Fri, 12 Feb 2021 10:50:23 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.5.0 MIME-Version: 1.0 In-Reply-To: <20210208084637.47789-1-linmiaohe@huawei.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 7ECD42000D82 X-Stat-Signature: twxriuhi3u51qxuzzrycgmbkyjcndq79 Received-SPF: none (redhat.com>: No applicable sender policy available) receiver=imf11; identity=mailfrom; envelope-from=""; helo=us-smtp-delivery-124.mimecast.com; client-ip=170.10.133.124 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1613123427-490488 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 08.02.21 09:46, Miaohe Lin wrote: > The function hugetlb_vmtruncate() is guaranteed to always success since > commit 7aa91e104028 ("hugetlb: allow extending ftruncate on hugetlbfs"). > So we should remove the unneeded return value which is always 0. > > Signed-off-by: Miaohe Lin > --- > fs/hugetlbfs/inode.c | 7 ++----- > 1 file changed, 2 insertions(+), 5 deletions(-) > > diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c > index 394da2ab08ad..701c82c36138 100644 > --- a/fs/hugetlbfs/inode.c > +++ b/fs/hugetlbfs/inode.c > @@ -567,7 +567,7 @@ static void hugetlbfs_evict_inode(struct inode *inode) > clear_inode(inode); > } > > -static int hugetlb_vmtruncate(struct inode *inode, loff_t offset) > +static void hugetlb_vmtruncate(struct inode *inode, loff_t offset) > { > pgoff_t pgoff; > struct address_space *mapping = inode->i_mapping; > @@ -582,7 +582,6 @@ static int hugetlb_vmtruncate(struct inode *inode, loff_t offset) > hugetlb_vmdelete_list(&mapping->i_mmap, pgoff, 0); > i_mmap_unlock_write(mapping); > remove_inode_hugepages(inode, offset, LLONG_MAX); > - return 0; > } > > static long hugetlbfs_punch_hole(struct inode *inode, loff_t offset, loff_t len) > @@ -781,9 +780,7 @@ static int hugetlbfs_setattr(struct user_namespace *mnt_userns, > if ((newsize < oldsize && (info->seals & F_SEAL_SHRINK)) || > (newsize > oldsize && (info->seals & F_SEAL_GROW))) > return -EPERM; > - error = hugetlb_vmtruncate(inode, newsize); > - if (error) > - return error; > + hugetlb_vmtruncate(inode, newsize); > } > > setattr_copy(&init_user_ns, inode, attr); > Reviewed-by: David Hildenbrand -- Thanks, David / dhildenb