From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-182.mta0.migadu.com (out-182.mta0.migadu.com [91.218.175.182]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6877E4D8CE for ; Thu, 18 Jun 2026 16:16:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781799381; cv=none; b=DlOUFjfpuqMqV5T6kKIbzq+9qmjdpmj1gHKTqcdH1hdlpRVv5nDY47uHyjrO0ge225xmTdShcVYmU3dyzvyj+6+JJDUi1tFNYhAjUC7H4lem1hYNRFq115qIShRCu8AAeyl1O/WkemgHPXDij2pBFsLMhQkmzLaXY3/oX/8JNIA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781799381; c=relaxed/simple; bh=86NmraxvOIKFQjLHNQhu7sY0yW6+Q2B/vPG1D87UCc4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=aIHGIFAScdqmGBsjbe82WI2/BpV49TF0qYIZxDvx5NPzVcwTc+VcnZDi3m2uvdkyS7HL2kD62S1jSU6Jj5rqkbJIFc4F3+ult76sUEgp0fkkCapd1v61JAkE+4C17iK0q+hs7jvg+qghaONjOm47priY81vw+gqqb5wrV5BPBL0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=jqQndy+R; arc=none smtp.client-ip=91.218.175.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="jqQndy+R" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1781799376; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1nA8ddpqn3sBSela2vYVrfvI6UDB/unaNSJzIV+XHpI=; b=jqQndy+RrKIlq05G3yP9DdrjzchOLnYIfMlf7J4K9RSosslKGLJ4EE7xGg2Dk3juCfY4GK S3C3WQx1mjMEsOeqwTCz3X+532Yhg5fIQtHhJwi+A/2ANwFqLlJ8eYmcAOKpGoJrE3ptlM Db6KlKw2gNfqqF5Q57AdC7kMM/SJUEg= From: Usama Arif To: Jane Chu Cc: Usama Arif , akpm@linux-foundation.org, willy@infradead.org, jack@suse.cz, viro@zeniv.linux.org.uk, brauner@kernel.org, muchun.song@linux.dev, osalvador@suse.de, david@kernel.org, hughd@google.com, baolin.wang@linux.alibaba.com, linmiaohe@huawei.com, nao.horiguchi@gmail.com, lorenzo@kernel.org, rppt@kernel.org, peterx@redhat.com, corbet@lwn.net, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: Re: [PATCH v2 07/11] hugetlb: replace filemap_lock_hugetlb_folio with filemap_lock_folio Date: Thu, 18 Jun 2026 09:16:05 -0700 Message-ID: <20260618161606.4182915-1-usama.arif@linux.dev> In-Reply-To: <20260617172534.1740152-8-jane.chu@oracle.com> References: Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT On Wed, 17 Jun 2026 11:25:28 -0600 Jane Chu wrote: > The problem with filemap_lock_hugetlb_folio() is redundancy, replace > it with the generic filemap_lock_folio(). > > Suggested-by: David Hildenbrand > Signed-off-by: Jane Chu > --- > fs/hugetlbfs/inode.c | 3 +-- > include/linux/hugetlb.h | 12 ------------ > mm/hugetlb.c | 4 ++-- > 3 files changed, 3 insertions(+), 16 deletions(-) > > diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c > index 02cb265a580e..6c883478f7e7 100644 > --- a/fs/hugetlbfs/inode.c > +++ b/fs/hugetlbfs/inode.c > @@ -518,10 +518,9 @@ static void hugetlbfs_zero_partial_page(struct hstate *h, > loff_t start, > loff_t end) > { > - pgoff_t idx = start >> huge_page_shift(h); > struct folio *folio; > > - folio = filemap_lock_hugetlb_folio(h, mapping, idx); > + folio = filemap_lock_folio(mapping, start); Do you need to do start >> PAGE_SHIFT over here? > if (IS_ERR(folio)) > return; > > diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h > index cae5cdd3ea00..e78d0f706681 100644 > --- a/include/linux/hugetlb.h > +++ b/include/linux/hugetlb.h > @@ -824,12 +824,6 @@ static inline unsigned int blocks_per_huge_page(struct hstate *h) > return huge_page_size(h) / 512; > } > > -static inline struct folio *filemap_lock_hugetlb_folio(struct hstate *h, > - struct address_space *mapping, pgoff_t idx) > -{ > - return filemap_lock_folio(mapping, idx << huge_page_order(h)); > -} > - > #include > > #ifndef is_hugepage_only_range > @@ -1096,12 +1090,6 @@ static inline struct hugepage_subpool *hugetlb_folio_subpool(struct folio *folio > return NULL; > } > > -static inline struct folio *filemap_lock_hugetlb_folio(struct hstate *h, > - struct address_space *mapping, pgoff_t idx) > -{ > - return NULL; > -} > - > static inline int isolate_or_dissolve_huge_folio(struct folio *folio, > struct list_head *list) > { > diff --git a/mm/hugetlb.c b/mm/hugetlb.c > index ecd1d1322fda..5484e78fe72e 100644 > --- a/mm/hugetlb.c > +++ b/mm/hugetlb.c > @@ -5715,7 +5715,7 @@ static vm_fault_t hugetlb_no_page(struct address_space *mapping, > * before we get page_table_lock. > */ > new_folio = false; > - folio = filemap_lock_hugetlb_folio(h, mapping, idx); > + folio = filemap_lock_folio(mapping, vmf->pgoff); > if (IS_ERR(folio)) { > size = i_size_read(mapping->host) >> PAGE_SHIFT; > if (vmf->pgoff >= size) > @@ -6201,7 +6201,7 @@ int hugetlb_mfill_atomic_pte(pte_t *dst_pte, > > if (is_continue) { > ret = -EFAULT; > - folio = filemap_lock_hugetlb_folio(h, mapping, idx); > + folio = filemap_lock_folio(mapping, idx << huge_page_order(h)); > if (IS_ERR(folio)) > goto out; > folio_in_pagecache = true; > -- > 2.43.5 > >