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 A1D331170B; Tue, 13 Feb 2024 00:21:01 +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=1707783661; cv=none; b=WgS7IaVTyTVqsAfiMR9qq0sK/EonW9ob5YNKFFpAnnZrUdagYJZ1oV80d1RNcykf+zEHde+5JuUgm5fZLAckorFPrHlIYwvzsFj/71g2nnyXzvFS1fILW8LwQ0m4BH59Nahq9i3scDW75OCz+eCiNVyWoVWwQcg9tc4keuDOI2E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707783661; c=relaxed/simple; bh=mEZhJ+CMAS0d+aoCaCr5xPrw3Uxvg+w87QQyeITvjjM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=kjAWDG89YYTpq4OxR6rf30xil5hdW7nXkb3gc5xNdxYY/E8sbMiJYU4uSkrVnHpjcbu5uS7Ckzhs3DKjuY3dO+nDrHnRKPGEHzH8iw/iDcAUU9BB8Q700x7PpLFirMlgR8JKL+wfR1JlJ0J+5IwMMPCOqZji4LCyi6dle7T4pr4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MBAN8GB5; 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="MBAN8GB5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 67088C433F1; Tue, 13 Feb 2024 00:21:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1707783661; bh=mEZhJ+CMAS0d+aoCaCr5xPrw3Uxvg+w87QQyeITvjjM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MBAN8GB5Sfy1OnCnX5JK6vHuiAnVnyMXqJqwa4v2tDL/CIMcHtKHj9lalT6XfQYWt 2IBrB1AChZWVJEzwef5HDJJu8L02xwtcMgqWCyedRYQ3qfb5r2zp0cDr8AmFynkaCj jJbqp9gm0dzPrEXvzT95rLmld9wV1IYd2yHQk23m1oXS8ngulc7d8pYSUISXlRQ+/X Egql/H2pBIgeBU5DC4YW38XW69eGt+DfdpmTYIUEpn7gLMOMNU12XN5qdRQUS6m+QC 7F53zfw+GJLf3lFwwHKpcaeZnxrxVHFzkublXz1fu/wveoLkbB0wVK90HG6TmbpRzv 50l+F4ysImyaw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Konstantin Komarov , Sasha Levin , ntfs3@lists.linux.dev Subject: [PATCH AUTOSEL 6.6 07/51] fs/ntfs3: Fix multithreaded stress test Date: Mon, 12 Feb 2024 19:19:44 -0500 Message-ID: <20240213002052.670571-7-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240213002052.670571-1-sashal@kernel.org> References: <20240213002052.670571-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: ntfs3@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.6.16 Content-Transfer-Encoding: 8bit From: Konstantin Komarov [ Upstream commit a8b0c9fc3a2dba07f697ef7825e04363ff12f071 ] Signed-off-by: Konstantin Komarov Signed-off-by: Sasha Levin --- fs/ntfs3/attrib.c | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) diff --git a/fs/ntfs3/attrib.c b/fs/ntfs3/attrib.c index 63f70259edc0..4b78b669a3bd 100644 --- a/fs/ntfs3/attrib.c +++ b/fs/ntfs3/attrib.c @@ -886,7 +886,7 @@ int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, struct runs_tree *run = &ni->file.run; struct ntfs_sb_info *sbi; u8 cluster_bits; - struct ATTRIB *attr = NULL, *attr_b; + struct ATTRIB *attr, *attr_b; struct ATTR_LIST_ENTRY *le, *le_b; struct mft_inode *mi, *mi_b; CLST hint, svcn, to_alloc, evcn1, next_svcn, asize, end, vcn0, alen; @@ -904,12 +904,8 @@ int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, *len = 0; up_read(&ni->file.run_lock); - if (*len) { - if (*lcn != SPARSE_LCN || !new) - return 0; /* Fast normal way without allocation. */ - else if (clen > *len) - clen = *len; - } + if (*len && (*lcn != SPARSE_LCN || !new)) + return 0; /* Fast normal way without allocation. */ /* No cluster in cache or we need to allocate cluster in hole. */ sbi = ni->mi.sbi; @@ -918,6 +914,17 @@ int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, ni_lock(ni); down_write(&ni->file.run_lock); + /* Repeat the code above (under write lock). */ + if (!run_lookup_entry(run, vcn, lcn, len, NULL)) + *len = 0; + + if (*len) { + if (*lcn != SPARSE_LCN || !new) + goto out; /* normal way without allocation. */ + if (clen > *len) + clen = *len; + } + le_b = NULL; attr_b = ni_find_attr(ni, NULL, &le_b, ATTR_DATA, NULL, 0, NULL, &mi_b); if (!attr_b) { -- 2.43.0