From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 C9C4C4414 for ; Mon, 24 Feb 2025 07:19:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740381553; cv=none; b=oYMBVsX3Rtl9QDUPHuRDPhpzkS+sgT1+Z7q/3t2yDf3iZidBlE2nVzbqnKQGb0BVQT4haDMp/ksuvuHPkmy/K4UQKOJ3RPLa1KqGSB7q6juxfymSWnwBTAtv1JmaFCaz04XjDhP1GWNIKwr4G1gzTebGIl0QSwQjPNtgM/MuQHM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740381553; c=relaxed/simple; bh=pm757VnndsKaWsJyQVwBdHyJs9Kn9U/lES5NG0JMMAE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=FfiTPu2FEa5aI3x+UMgLSXW1tawSvLVgCS4DE8Y/+Rc82HMQrf8Jly0QNaVIw/2ivOqaaZ8uFvMBT20amC8ALeohmuYboNrxRmPLTS+Zfv3kT/oXepZgsh6Tu5y69iTP2doz23zOQ/697kP7hiJhKXL4CjXib5nWyCc3O5mB6es= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fKIFQ1qq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fKIFQ1qq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 02E68C4CEEC; Mon, 24 Feb 2025 07:19:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1740381553; bh=pm757VnndsKaWsJyQVwBdHyJs9Kn9U/lES5NG0JMMAE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=fKIFQ1qqzO5kSI1T1XVUM2b9ycTWkuH6ZIOKwbo3jQ1OJ3VX63PnuH43ea39sBtfF f08vopCAxXHpjnAWThUGs/e5Zy6NnktCgyGQoIjtMbA9CWWndKKuYQ5mUs6nGT7HU1 b71RWGeyvpeuNTvcKO4nqT6nPAYSgDiGeLvvr9gQ0xGk2mkRPvv77R+Qk2XJ3xJL8f Mx03pqYIZmm7s7ljklnS+AsKA6gLk4xSyAGXdLwuggV/amRiGqygc+pwDTbXAppTV1 o4Dw6gKwPAv5wMCemc9C3CNfYEqLQwDAC5QAVTKOV5jDfsWeJ1p6SK4KyDlP1uv6Om btL4Wdwr8ATeg== Date: Mon, 24 Feb 2025 07:19:11 +0000 From: Jaegeuk Kim To: "Matthew Wilcox (Oracle)" Cc: Chao Yu , linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org Subject: Re: [PATCH 03/27] f2fs: Add f2fs_folio_put() Message-ID: References: <20250218055203.591403-1-willy@infradead.org> <20250218055203.591403-4-willy@infradead.org> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Hi Matthew, On 02/21, Jaegeuk Kim wrote: > On 02/18, Matthew Wilcox (Oracle) wrote: > > Convert f2fs_put_page() to f2fs_folio_put() and add a wrapper. > > Replaces three calls to compound_head() with one. > > > > Signed-off-by: Matthew Wilcox (Oracle) > > --- > > fs/f2fs/f2fs.h | 15 ++++++++++----- > > 1 file changed, 10 insertions(+), 5 deletions(-) > > > > diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h > > index b05653f196dd..5e01a08afbd7 100644 > > --- a/fs/f2fs/f2fs.h > > +++ b/fs/f2fs/f2fs.h > > @@ -2806,16 +2806,21 @@ static inline struct page *f2fs_pagecache_get_page( > > return pagecache_get_page(mapping, index, fgp_flags, gfp_mask); > > } > > > > -static inline void f2fs_put_page(struct page *page, int unlock) > > +static inline void f2fs_folio_put(struct folio *folio, bool unlock) > > { > > - if (!page) > > + if (!folio) > > return; > > > > if (unlock) { > > - f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page)); > > - unlock_page(page); > > + f2fs_bug_on(F2FS_F_SB(folio), !folio_test_locked(folio)); > > + folio_unlock(folio); > > } > > - put_page(page); > > + folio_put(folio); > > +} > > + > > +static inline void f2fs_put_page(struct page *page, int unlock) > > +{ > > I got a kernel panic, since there are still several places to pass a null > page pointer, which feeds to page_folio() which doesn't expect the null. > > Applying this can avoid the panic. > > if (!page) > return; Please let me know, if you want me to apply this to your patch directly, or post v2. Thanks, > > > + f2fs_folio_put(page_folio(page), unlock); > > } > > > > static inline void f2fs_put_dnode(struct dnode_of_data *dn) > > -- > > 2.47.2 > >