From patchwork Tue Nov 19 15:49:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13880215 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 356241D0E04 for ; Tue, 19 Nov 2024 15:50:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732031409; cv=none; b=qxdzIL2NoRXxmf5QSFz8VVRu1eoXpqmhAHITTODSG/MgddwkNVU80QHw9wq4CUR5b8KoqBz+cNlhVCiBSUughVfd0aVfbEO+QhV2dJCUbeBEdpBwpGEcywhRjXUHtIDz6JjvO49TAtjjoSAr2hwLOA+mW2g9lT0M0LICctWrWvk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732031409; c=relaxed/simple; bh=Q/WHEL2oJLmBArAAUI/3G3u+ZcSgkwpDup1blMdSIlc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EABfSMbASS31+WoNZ/Sp5BiuLOqTfLZ2PkKrjw7q5IMbCd+6Tf4GvW4Gur3F6a/pg/8AcAU3gITddZk3+gS3KZYpZu1jLky8767ywoi/H1AboxtITSFMJeySgAesXh0d7L65BbC1z3Fd2hBIP6wdCO7ccZV8kaoceMDF23QIOZA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=MWqtcUL1; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="MWqtcUL1" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=1uWR0Qw/8RQ9NwHC20OrFX8/rYKnMn+gJupvi34fJtQ=; b=MWqtcUL1hknbB0hY+AGIEZPUe5 KN2yTl7vrRI6kGfAiUJkpD1elFpFWIBlEBSg6GYt5+YGxWExnUgUSuhZWCmEDoD3DpkM+Ij1W5ols vCrQYGJEQT8Wes50yBI+cERKIyeNWQMwGXs1bRDOixFCyrlWd7wi9E68AXjpCMdND+FOALTnaOaaN KZvCf4WYgCSR51lOkbl0yVgt+1l+aa1CCVJD7L+exRf0Kmks6V/6CeWAzRFZUWedEXEooC13mlVcm CwWUWg8BRW6MZfxUy6pNYiKf7qVnZY2rCMCKLxXiU4+fzaRfdP3VHJfSnrWWyhb7zoeB77h5I/Esp cc7BQrHg==; Received: from 2a02-8389-2341-5b80-1731-a089-d2b1-3edf.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:1731:a089:d2b1:3edf] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.98 #2 (Red Hat Linux)) id 1tDQUQ-0000000CvdJ-1yqE; Tue, 19 Nov 2024 15:50:06 +0000 From: Christoph Hellwig To: Carlos Maiolino Cc: "Darrick J. Wong" , linux-xfs@vger.kernel.org Subject: [PATCH 1/3] xfs: factor out a xfs_rt_check_size helper Date: Tue, 19 Nov 2024 16:49:47 +0100 Message-ID: <20241119154959.1302744-2-hch@lst.de> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241119154959.1302744-1-hch@lst.de> References: <20241119154959.1302744-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Add a helper to check that the last block of a RT device is readable to share the code between mount and growfs. This also adds the mount time overflow check to growfs and improves the error messages. Signed-off-by: Christoph Hellwig --- fs/xfs/xfs_rtalloc.c | 62 ++++++++++++++++++++++---------------------- 1 file changed, 31 insertions(+), 31 deletions(-) diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index 0cb534d71119..90f4fdd47087 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -1225,6 +1225,34 @@ xfs_grow_last_rtg( mp->m_sb.sb_rgextents; } +/* + * Read in the last block of the RT device to make sure it is accessible. + */ +static int +xfs_rt_check_size( + struct xfs_mount *mp, + xfs_rfsblock_t last_block) +{ + xfs_daddr_t daddr = XFS_FSB_TO_BB(mp, last_block); + struct xfs_buf *bp; + int error; + + if (XFS_BB_TO_FSB(mp, daddr) != last_block) { + xfs_warn(mp, "RT device size overflow: %llu != %llu", + XFS_BB_TO_FSB(mp, daddr), last_block); + return -EFBIG; + } + + error = xfs_buf_read_uncached(mp->m_rtdev_targp, daddr, + XFS_FSB_TO_BB(mp, 1), 0, &bp, NULL); + if (error) + xfs_warn(mp, "cannot read last RT device block (%lld)", + last_block); + else + xfs_buf_relse(bp); + return error; +} + /* * Grow the realtime area of the filesystem. */ @@ -1236,7 +1264,6 @@ xfs_growfs_rt( xfs_rgnumber_t old_rgcount = mp->m_sb.sb_rgcount; xfs_rgnumber_t new_rgcount = 1; xfs_rgnumber_t rgno; - struct xfs_buf *bp; xfs_agblock_t old_rextsize = mp->m_sb.sb_rextsize; int error; @@ -1273,15 +1300,10 @@ xfs_growfs_rt( error = xfs_sb_validate_fsb_count(&mp->m_sb, in->newblocks); if (error) goto out_unlock; - /* - * Read in the last block of the device, make sure it exists. - */ - error = xfs_buf_read_uncached(mp->m_rtdev_targp, - XFS_FSB_TO_BB(mp, in->newblocks - 1), - XFS_FSB_TO_BB(mp, 1), 0, &bp, NULL); + + error = xfs_rt_check_size(mp, in->newblocks - 1); if (error) goto out_unlock; - xfs_buf_relse(bp); /* * Calculate new parameters. These are the final values to be reached. @@ -1408,10 +1430,6 @@ int /* error */ xfs_rtmount_init( struct xfs_mount *mp) /* file system mount structure */ { - struct xfs_buf *bp; /* buffer for last block of subvolume */ - xfs_daddr_t d; /* address of last block of subvolume */ - int error; - if (mp->m_sb.sb_rblocks == 0) return 0; if (mp->m_rtdev_targp == NULL) { @@ -1422,25 +1440,7 @@ xfs_rtmount_init( mp->m_rsumblocks = xfs_rtsummary_blockcount(mp, &mp->m_rsumlevels); - /* - * Check that the realtime section is an ok size. - */ - d = (xfs_daddr_t)XFS_FSB_TO_BB(mp, mp->m_sb.sb_rblocks); - if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_rblocks) { - xfs_warn(mp, "realtime mount -- %llu != %llu", - (unsigned long long) XFS_BB_TO_FSB(mp, d), - (unsigned long long) mp->m_sb.sb_rblocks); - return -EFBIG; - } - error = xfs_buf_read_uncached(mp->m_rtdev_targp, - d - XFS_FSB_TO_BB(mp, 1), - XFS_FSB_TO_BB(mp, 1), 0, &bp, NULL); - if (error) { - xfs_warn(mp, "realtime device size check failed"); - return error; - } - xfs_buf_relse(bp); - return 0; + return xfs_rt_check_size(mp, mp->m_sb.sb_rblocks - 1); } static int