From patchwork Tue Nov 26 01:25:45 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 13885409 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 A7FAF946C; Tue, 26 Nov 2024 01:25:46 +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=1732584346; cv=none; b=FfvIgxRx/KOHmpFQB7qWfJxzv1xfd3vFv8LmZYHWMXrgMPrdANoYbfljFyzxasNU2aOs5R773MWcV8mfIyqqcDTPJQNbYsxokdJ7cTRKZ/HFfv321tOhk4QA8fIFSb19Sp/2IJuNSwa8GZFBeF8kwL0perEo5+7iyiTofHMyCA4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732584346; c=relaxed/simple; bh=hXAq9p/Jf6bf4ZMMvEx6UyR0/luXHzK6s2KR1Z7rWj8=; h=Date:Subject:From:To:Cc:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ad8mpakSPmO97FMD5bG+KpPptI/zmblJgR0Dd20LO87lxzxoOaI5/5NfCTvE80wG76dEpVAx1m8orxqa0l7QrRDsyLJAsDi7gz8hMozXv+PIq+DafF4fGNvPmxOBdZG/awUBdQvJs4+kuVafLfu4x8uX9ovkpNsOwPPraeWrVOA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HltGL60Z; 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="HltGL60Z" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 16566C4CECE; Tue, 26 Nov 2024 01:25:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1732584346; bh=hXAq9p/Jf6bf4ZMMvEx6UyR0/luXHzK6s2KR1Z7rWj8=; h=Date:Subject:From:To:Cc:In-Reply-To:References:From; b=HltGL60ZqzAmjVie7oYsq32gfvg/l6Qqkwc9f8tSggT+e/8lwc7mPL5nvnq1zzRqM oY7WknqK0xJbhaLSvjoLAXq1C+JO5sRSfx83ac55jCxd4t88jMLKNCj0qbPiuQ1PM9 c5QT0gCVO4mwE7yNL9gwL+Zbs8AEeIxym265H7Uf89EXEJsCodzQ/Lpg18Q/vE340e 0roE3PNmfzVnzmceYM3uLjKbBToyqQ38r5cHHSlBFRzsmHuP97hlsA3k68SRTBs37C Z30aDTEWVmuqfrVbWKUh8x8TJlh3Z+A/zPlmk1qPOdtbV59zakyGiV7PsfSwebGv/k hR0q9YxcgEwYg== Date: Mon, 25 Nov 2024 17:25:45 -0800 Subject: [PATCH 04/21] xfs: return a 64-bit block count from xfs_btree_count_blocks From: "Darrick J. Wong" To: djwong@kernel.org Cc: stable@vger.kernel.org, hch@lst.de, linux-xfs@vger.kernel.org Message-ID: <173258397871.4032920.47151735139743461.stgit@frogsfrogsfrogs> In-Reply-To: <173258397748.4032920.4159079744952779287.stgit@frogsfrogsfrogs> References: <173258397748.4032920.4159079744952779287.stgit@frogsfrogsfrogs> Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Darrick J. Wong With the nrext64 feature enabled, it's possible for a data fork to have 2^48 extent mappings. Even with a 64k fsblock size, that maps out to a bmbt containing more than 2^32 blocks. Therefore, this predicate must return a u64 count to avoid an integer wraparound that will cause scrub to do the wrong thing. It's unlikely that any such filesystem currently exists, because the incore bmbt would consume more than 64GB of kernel memory on its own, and so far nobody except me has driven a filesystem that far, judging from the lack of complaints. Cc: # v5.19 Fixes: df9ad5cc7a5240 ("xfs: Introduce macros to represent new maximum extent counts for data/attr forks") Signed-off-by: "Darrick J. Wong" Reviewed-by: Christoph Hellwig --- fs/xfs/libxfs/xfs_btree.c | 4 ++-- fs/xfs/libxfs/xfs_btree.h | 2 +- fs/xfs/libxfs/xfs_ialloc_btree.c | 4 +++- fs/xfs/scrub/agheader.c | 6 +++--- fs/xfs/scrub/agheader_repair.c | 6 +++--- fs/xfs/scrub/fscounters.c | 2 +- fs/xfs/scrub/ialloc.c | 4 ++-- fs/xfs/scrub/refcount.c | 2 +- fs/xfs/xfs_bmap_util.c | 2 +- 9 files changed, 17 insertions(+), 15 deletions(-) diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c index 2b5fc5fd16435d..c748866ef92368 100644 --- a/fs/xfs/libxfs/xfs_btree.c +++ b/fs/xfs/libxfs/xfs_btree.c @@ -5144,7 +5144,7 @@ xfs_btree_count_blocks_helper( int level, void *data) { - xfs_extlen_t *blocks = data; + xfs_filblks_t *blocks = data; (*blocks)++; return 0; @@ -5154,7 +5154,7 @@ xfs_btree_count_blocks_helper( int xfs_btree_count_blocks( struct xfs_btree_cur *cur, - xfs_extlen_t *blocks) + xfs_filblks_t *blocks) { *blocks = 0; return xfs_btree_visit_blocks(cur, xfs_btree_count_blocks_helper, diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h index 3b739459ebb0f4..c5bff273cae255 100644 --- a/fs/xfs/libxfs/xfs_btree.h +++ b/fs/xfs/libxfs/xfs_btree.h @@ -484,7 +484,7 @@ typedef int (*xfs_btree_visit_blocks_fn)(struct xfs_btree_cur *cur, int level, int xfs_btree_visit_blocks(struct xfs_btree_cur *cur, xfs_btree_visit_blocks_fn fn, unsigned int flags, void *data); -int xfs_btree_count_blocks(struct xfs_btree_cur *cur, xfs_extlen_t *blocks); +int xfs_btree_count_blocks(struct xfs_btree_cur *cur, xfs_filblks_t *blocks); union xfs_btree_rec *xfs_btree_rec_addr(struct xfs_btree_cur *cur, int n, struct xfs_btree_block *block); diff --git a/fs/xfs/libxfs/xfs_ialloc_btree.c b/fs/xfs/libxfs/xfs_ialloc_btree.c index 9b34896dd1a32f..6f270d8f4270cb 100644 --- a/fs/xfs/libxfs/xfs_ialloc_btree.c +++ b/fs/xfs/libxfs/xfs_ialloc_btree.c @@ -744,6 +744,7 @@ xfs_finobt_count_blocks( { struct xfs_buf *agbp = NULL; struct xfs_btree_cur *cur; + xfs_filblks_t blocks; int error; error = xfs_ialloc_read_agi(pag, tp, 0, &agbp); @@ -751,9 +752,10 @@ xfs_finobt_count_blocks( return error; cur = xfs_finobt_init_cursor(pag, tp, agbp); - error = xfs_btree_count_blocks(cur, tree_blocks); + error = xfs_btree_count_blocks(cur, &blocks); xfs_btree_del_cursor(cur, error); xfs_trans_brelse(tp, agbp); + *tree_blocks = blocks; return error; } diff --git a/fs/xfs/scrub/agheader.c b/fs/xfs/scrub/agheader.c index 61f80a6410c738..1d41b85478da9d 100644 --- a/fs/xfs/scrub/agheader.c +++ b/fs/xfs/scrub/agheader.c @@ -458,7 +458,7 @@ xchk_agf_xref_btreeblks( { struct xfs_agf *agf = sc->sa.agf_bp->b_addr; struct xfs_mount *mp = sc->mp; - xfs_agblock_t blocks; + xfs_filblks_t blocks; xfs_agblock_t btreeblks; int error; @@ -507,7 +507,7 @@ xchk_agf_xref_refcblks( struct xfs_scrub *sc) { struct xfs_agf *agf = sc->sa.agf_bp->b_addr; - xfs_agblock_t blocks; + xfs_filblks_t blocks; int error; if (!sc->sa.refc_cur) @@ -840,7 +840,7 @@ xchk_agi_xref_fiblocks( struct xfs_scrub *sc) { struct xfs_agi *agi = sc->sa.agi_bp->b_addr; - xfs_agblock_t blocks; + xfs_filblks_t blocks; int error = 0; if (!xfs_has_inobtcounts(sc->mp)) diff --git a/fs/xfs/scrub/agheader_repair.c b/fs/xfs/scrub/agheader_repair.c index 0fad0baaba2f69..b45d2b32051a63 100644 --- a/fs/xfs/scrub/agheader_repair.c +++ b/fs/xfs/scrub/agheader_repair.c @@ -256,7 +256,7 @@ xrep_agf_calc_from_btrees( struct xfs_agf *agf = agf_bp->b_addr; struct xfs_mount *mp = sc->mp; xfs_agblock_t btreeblks; - xfs_agblock_t blocks; + xfs_filblks_t blocks; int error; /* Update the AGF counters from the bnobt. */ @@ -946,7 +946,7 @@ xrep_agi_calc_from_btrees( if (error) goto err; if (xfs_has_inobtcounts(mp)) { - xfs_agblock_t blocks; + xfs_filblks_t blocks; error = xfs_btree_count_blocks(cur, &blocks); if (error) @@ -959,7 +959,7 @@ xrep_agi_calc_from_btrees( agi->agi_freecount = cpu_to_be32(freecount); if (xfs_has_finobt(mp) && xfs_has_inobtcounts(mp)) { - xfs_agblock_t blocks; + xfs_filblks_t blocks; cur = xfs_finobt_init_cursor(sc->sa.pag, sc->tp, agi_bp); error = xfs_btree_count_blocks(cur, &blocks); diff --git a/fs/xfs/scrub/fscounters.c b/fs/xfs/scrub/fscounters.c index 4a50f8e0004092..ca23cf4db6c5ef 100644 --- a/fs/xfs/scrub/fscounters.c +++ b/fs/xfs/scrub/fscounters.c @@ -261,7 +261,7 @@ xchk_fscount_btreeblks( struct xchk_fscounters *fsc, xfs_agnumber_t agno) { - xfs_extlen_t blocks; + xfs_filblks_t blocks; int error; error = xchk_ag_init_existing(sc, agno, &sc->sa); diff --git a/fs/xfs/scrub/ialloc.c b/fs/xfs/scrub/ialloc.c index abad54c3621d44..4dc7c83dc08a40 100644 --- a/fs/xfs/scrub/ialloc.c +++ b/fs/xfs/scrub/ialloc.c @@ -650,8 +650,8 @@ xchk_iallocbt_xref_rmap_btreeblks( struct xfs_scrub *sc) { xfs_filblks_t blocks; - xfs_extlen_t inobt_blocks = 0; - xfs_extlen_t finobt_blocks = 0; + xfs_filblks_t inobt_blocks = 0; + xfs_filblks_t finobt_blocks = 0; int error; if (!sc->sa.ino_cur || !sc->sa.rmap_cur || diff --git a/fs/xfs/scrub/refcount.c b/fs/xfs/scrub/refcount.c index 2b6be75e942415..1c5e45cc64190c 100644 --- a/fs/xfs/scrub/refcount.c +++ b/fs/xfs/scrub/refcount.c @@ -491,7 +491,7 @@ xchk_refcount_xref_rmap( struct xfs_scrub *sc, xfs_filblks_t cow_blocks) { - xfs_extlen_t refcbt_blocks = 0; + xfs_filblks_t refcbt_blocks = 0; xfs_filblks_t blocks; int error; diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index a59bbe767a7dc4..0836fea2d6d814 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -103,7 +103,7 @@ xfs_bmap_count_blocks( struct xfs_mount *mp = ip->i_mount; struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork); struct xfs_btree_cur *cur; - xfs_extlen_t btblocks = 0; + xfs_filblks_t btblocks = 0; int error; *nextents = 0;