From patchwork Mon Aug 12 12:11:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Yi X-Patchwork-Id: 13760487 Received: from dggsgout11.his.huawei.com (dggsgout11.his.huawei.com [45.249.212.51]) (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 3096816BE3B; Mon, 12 Aug 2024 12:16:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.51 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723464984; cv=none; b=p4GbKcxKloDNGq9XsqYMgHEDg9qyxPbqYqWyJKsUwtgxgUhldbovSWlWVsYP+eZgfHgpMjE/9qXsc2FDd+/3ZBW1H/13EMP5e3pEij5z1yLB1kfRF+e6KfvV9DE3sv6Ol6yLx/HydfsPxYFDIU5NrX3cVehadraxGVuCcljrhfs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723464984; c=relaxed/simple; bh=b13qTTePhXsovr+tkZ99PLzauYfJFJPIBeRsrYSKIgQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=b45DLnX2DHiyItgSRMOf1DkMym+q7kW7NfWhAHsuHMk9xMVBXBiGfE2MW5FrBKNfvBCAi+0EuMzDwefVZ56jxZAGqFraRfZIB44K9yvNkQde/n2B4qtVVhsX8AR2vr7LApJgrya7mHfwAqz+/VfOwKuCdeoBuYXwdVdkRbJJ7xw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.216]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4WjD4t0khnz4f3mHt; Mon, 12 Aug 2024 20:15:58 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.252]) by mail.maildlp.com (Postfix) with ESMTP id AF1911A144C; Mon, 12 Aug 2024 20:16:12 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP3 (Coremail) with SMTP id _Ch0CgDHeLcD_blmHhy7BQ--.21435S7; Mon, 12 Aug 2024 20:16:12 +0800 (CST) From: Zhang Yi To: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org Cc: linux-kernel@vger.kernel.org, djwong@kernel.org, hch@infradead.org, brauner@kernel.org, david@fromorbit.com, jack@suse.cz, willy@infradead.org, yi.zhang@huawei.com, yi.zhang@huaweicloud.com, chengzhihao1@huawei.com, yukuai3@huawei.com Subject: [PATCH v2 3/6] iomap: advance the ifs allocation if we have more than one blocks per folio Date: Mon, 12 Aug 2024 20:11:56 +0800 Message-Id: <20240812121159.3775074-4-yi.zhang@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240812121159.3775074-1-yi.zhang@huaweicloud.com> References: <20240812121159.3775074-1-yi.zhang@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: _Ch0CgDHeLcD_blmHhy7BQ--.21435S7 X-Coremail-Antispam: 1UD129KBjvJXoW7urWrWF1DCFyDCrW3AF1UWrg_yoW8Zw4DpF WDKFWqkFWxJr17urnrXas8ZrWj93yYqrWfCay3W3ZxZF1Dtr17Kw4kKa4YyFyxXr97Ar4S vFs0vFy8WF15Ar7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUmY14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JrWl82xGYIkIc2 x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJw A2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq3wAS 0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2 IY67AKxVWUGVWUXwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0 Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2kIc2 xKxwCY1x0262kKe7AKxVWUtVW8ZwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWU JVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67 kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY 6xIIjxv20xvEc7CjxVAFwI0_Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42 IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIev Ja73UjIFyTuYvjfUF3kuDUUUU X-CM-SenderInfo: d1lo6xhdqjqx5xdzvxpfor3voofrz/ From: Zhang Yi Now we allocate ifs if i_blocks_per_folio is larger than one when writing back dirty folios in iomap_writepage_map(), so we don't attach an ifs after buffer write to an entire folio until it starts writing back, if we partial truncate that folio, iomap_invalidate_folio() can't clear counterpart block's dirty bit as expected. Fix this by advance the ifs allocation to __iomap_write_begin(). Signed-off-by: Zhang Yi --- fs/iomap/buffered-io.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 763deabe8331..79031b7517e5 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -699,6 +699,12 @@ static int __iomap_write_begin(const struct iomap_iter *iter, loff_t pos, size_t from = offset_in_folio(folio, pos), to = from + len; size_t poff, plen; + if (nr_blocks > 1) { + ifs = ifs_alloc(iter->inode, folio, iter->flags); + if ((iter->flags & IOMAP_NOWAIT) && !ifs) + return -EAGAIN; + } + /* * If the write or zeroing completely overlaps the current folio, then * entire folio will be dirtied so there is no need for @@ -710,10 +716,6 @@ static int __iomap_write_begin(const struct iomap_iter *iter, loff_t pos, pos + len >= folio_pos(folio) + folio_size(folio)) return 0; - ifs = ifs_alloc(iter->inode, folio, iter->flags); - if ((iter->flags & IOMAP_NOWAIT) && !ifs && nr_blocks > 1) - return -EAGAIN; - if (folio_test_uptodate(folio)) return 0; @@ -1928,7 +1930,12 @@ static int iomap_writepage_map(struct iomap_writepage_ctx *wpc, WARN_ON_ONCE(end_pos <= pos); if (i_blocks_per_folio(inode, folio) > 1) { - if (!ifs) { + /* + * This should not happen since we always allocate ifs in + * iomap_folio_mkwrite_iter() and there is more than one + * blocks per folio in __iomap_write_begin(). + */ + if (WARN_ON_ONCE(!ifs)) { ifs = ifs_alloc(inode, folio, 0); iomap_set_range_dirty(folio, 0, end_pos - pos); }