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 CA43A38F65A for ; Sat, 28 Feb 2026 18:15:12 +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=1772302512; cv=none; b=Rp8rVZ1aq9Be+u6oZir/qLiAIOje9jrrNI8cQJE81RLqd5ZHveYUlkUocVxgMF7Ytlnxy/k1Q9J6BkQghE7JuFMYTFbF1/QobFyqWf2dV+Qp7xWD88LmGjeLgbJ/D2qBI/wcC7gieSkvAF7nMUozR6h4xL9HgLmjDsuKbsudAQo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302512; c=relaxed/simple; bh=vz4heyLxtzySdTCcMM2oTGqMh1FZh2KsmvrEBzwqW+M=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=o3RCZ2jeiXYmoZZmRrV3OrFsC4thIXanq5pHW3d/zM3rrsBj4hOfYQ08zzjUJ3uGgFO1wJ83ytSPASM9BZmBoqyqvXJDKSJvtrLnzvCKhX4sMkEeWy7FwHpX30dY/GRVmHO9XK/AuR0PZfobTOsTcE9xWGn072ibZuKL5YPe/0w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=vHesaCWC; 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="vHesaCWC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4FE4AC19424; Sat, 28 Feb 2026 18:15:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772302512; bh=vz4heyLxtzySdTCcMM2oTGqMh1FZh2KsmvrEBzwqW+M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vHesaCWCcWCjUfEsfyJP0YMdDMxrTcb04SEkHK/h/J6qEYHEmtwrFwtGDHtIcnR0p r882sDlstZgIbi7f00P+pKaCFP3tIjhpwO0lVz69r0vFs7On7rd8zbUyfxTAR5mNkM fB4zPMpsCvnUeU/fnEnbUvFZjFoSPSJetLWdoR6jO8bXETsjgF+q2GO7Et/77ugeej aKcsNVsRfFyt1DqncisP/CQhEEDYc+qcCth7yscy1b7OC+GWjn+/pwQFy+2I8vIG+g y5mwkpjUEjCXevOgMOLE+GSYvaN4g5kopy/tyH3aI8ehVEt1y4BFmZmv/fKDb/5DE+ /b7/7vpb+oBRA== From: Sasha Levin To: patches@lists.linux.dev Cc: Andreas Gruenbacher , Sasha Levin Subject: [PATCH 5.15 008/164] gfs2: Add metapath_dibh helper Date: Sat, 28 Feb 2026 13:12:27 -0500 Message-ID: <20260228181505.1600663-8-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228181505.1600663-1-sashal@kernel.org> References: <20260228181505.1600663-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Andreas Gruenbacher [ Upstream commit 92099f0c92270c8c7a79e6bc6e0312ad248ea331 ] Add a metapath_dibh() helper for extracting the inode's buffer head from a metapath. Signed-off-by: Andreas Gruenbacher Stable-dep-of: faddeb848305 ("gfs2: Fix use-after-free in iomap inline data write path") Signed-off-by: Sasha Levin --- fs/gfs2/bmap.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index d2011c3c33fc2..7425c90e47eb5 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -318,6 +318,12 @@ static void gfs2_metapath_ra(struct gfs2_glock *gl, __be64 *start, __be64 *end) } } +static inline struct buffer_head * +metapath_dibh(struct metapath *mp) +{ + return mp->mp_bh[0]; +} + static int __fillup_metapath(struct gfs2_inode *ip, struct metapath *mp, unsigned int x, unsigned int h) { @@ -662,7 +668,7 @@ static int __gfs2_iomap_alloc(struct inode *inode, struct iomap *iomap, { struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_sbd *sdp = GFS2_SB(inode); - struct buffer_head *dibh = mp->mp_bh[0]; + struct buffer_head *dibh = metapath_dibh(mp); u64 bn; unsigned n, i, blks, alloced = 0, iblks = 0, branch_start = 0; size_t dblks = iomap->length >> inode->i_blkbits; -- 2.51.0