From mboxrd@z Thu Jan 1 00:00:00 1970 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 18063225413 for ; Wed, 15 Jul 2026 06:42:21 +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=1784097743; cv=none; b=SIjYgYtT8eyOEIeUH1+QKSCqMylm5efrWHsQd6qkFCFX0Une/Uk4GyFMjGSKYsfq5RyKLfR/5/283b0KwXkxnEe78YqTJYyJa4f7L7NDYkbCOi5gjukWgckxgk7mLkl9QtHEcV1FYHLrABX25MYhVXOesaKcT+ThuNBxmf23V/0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784097743; c=relaxed/simple; bh=q25AQ2qu47NL3bW4batTP3GbnVj/2LblVppV5xeUPaI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=P1FcZ+94DQ7njIJxnqfl3yEmQdbYOh52uAN4Y5CJpp2VK15YsgSdP1gvit1d/v1sldcHV8X7FeHWEOM7rqmB/OZ1ZOphX4gy6UKFtLcGo+jX0Lz+HeR75TzVPKoKUCsZQGEA8Y0655kFJS+RMwrYK3fCC0ofLTEklW1RlfgzOiQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (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=1vkcPY+u; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (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="1vkcPY+u" 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=Ry3mJNASz6vi39sRC8lkbe416l9DpIb4nuVA9HsNvHk=; b=1vkcPY+uDejvEG4b0x9PpugBId MAlRqSHwZ3hDn+UtNfVbyPsTlszBzgDeYofzYGJtOgJryzrIeaPfTjVuT1d3IEb81PqF97Zk3ZDJr QUzj7rJ8SgCSFXVt25EnRsKC8DuZdUQfnGgQdQa96h4iIkeBSfaNEpMVYBp+HPHFVzJ5f3UMNJXAi JHYvNGVFJHMX8IBmS1OHSK5xFotaQB757S8tXhgxirv5NwbFUZCjVjjiZU/EciKq3dsEj+rP2k522 XTm9F5DqKTmB+tEFNO2cl4oaLVsRoK93CPNJe5FnBFB1VEhk428DbRxThIaOS4J1Cy8KgQbqMgXjA Tba4I23Q==; Received: from 2a02-8389-2301-9f00-3397-c9eb-6d8a-9179.cable.dynamic.v6.surfer.at ([2a02:8389:2301:9f00:3397:c9eb:6d8a:9179] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.99.1 #2 (Red Hat Linux)) id 1wjtK1-0000000DviL-1HVS; Wed, 15 Jul 2026 06:42:21 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Keith Busch , Neptune , linux-block@vger.kernel.org Subject: [PATCH 1/2] block: handle huge zero folios in bio_free_folios Date: Wed, 15 Jul 2026 08:42:07 +0200 Message-ID: <20260715064215.2934345-2-hch@lst.de> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260715064215.2934345-1-hch@lst.de> References: <20260715064215.2934345-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html When CONFIG_PERSISTENT_HUGE_ZERO_FOLIO is enabled, iomap_dio_zero() can add a huge zero folio to a zeroing bio, which needs special treatment in bio_free_folios by also checking is_huge_zero_folio() in addition to is_zero_folio(). Fixes: 8dd5e7c75d7b ("block: add helpers to bounce buffer an iov_iter into bios") Signed-off-by: Christoph Hellwig --- block/bio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/bio.c b/block/bio.c index f2a5f4d0a967..4d6e5f5f5710 100644 --- a/block/bio.c +++ b/block/bio.c @@ -1302,7 +1302,7 @@ static void bio_free_folios(struct bio *bio) bio_for_each_bvec_all(bv, bio, i) { struct folio *folio = bvec_folio(bv); - if (!is_zero_folio(folio)) + if (!is_zero_folio(folio) && !is_huge_zero_folio(folio)) folio_put(folio); } } -- 2.53.0