From nobody Mon Nov 25 16:40:28 2024 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 D4A71229B48 for ; Fri, 25 Oct 2024 20:42:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729888922; cv=none; b=kw9bJ4pig4Ok/4Q1ZZjK+a1gKmRnaMLf5sWh7xiB13HKpJ6Tqm8LPjniI9D6rIEFqsEZIwSl9k4nCLm6JvlGQr7xQo2BXdzw/gyLPB3MiEIRfvdKPiROGMexCmck0rreoZ1w3TeFOPoTR4rC2QzbO64HTvpK3I2ZEh8/oK+uY3Y= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729888922; c=relaxed/simple; bh=5o211Bs9aPlGXgBOv9ZEWRYTJwfzYdkVK8vs4FoRbiQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JVluYP6e+lJFErOSf+6S78sgkthW5BSMgfCPG8I1SiBAL62fEcG0x+M4X5S5vWTZ30n8L6JD9D/0SIbqaGSa1rwKc2flbufb81X8NJdvtwoLgccFh8dwO5uMgz2tD+DxW/aPr+oiSzJLJDgDLQImJb0lKvz/b7ukSSogCjtH6hQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=fz8mU1wq; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="fz8mU1wq" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1729888920; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=HO1trrAUxh6ged928OSrE9rZIbGVfYli8k1F5yQtGbY=; b=fz8mU1wq3QeLpYt48ouIjIYe4df88E/hwAloSzcF7oSWSbDsLBDukwqLK/95ynDI4rVrAE 6hdgVpp46hvIEaOajUFwVHHk0PWTePJ+UHa7Pq2kCIZm72E9Mr7cBnYXIU0v4WPykZYb2X +VPIzTuWxlgeMRMot5WWRoBURwdvrus= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-358-2-4fzlHMNnKbyI7I-IjOzQ-1; Fri, 25 Oct 2024 16:41:57 -0400 X-MC-Unique: 2-4fzlHMNnKbyI7I-IjOzQ-1 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 4AF4E1955F3F; Fri, 25 Oct 2024 20:41:54 +0000 (UTC) Received: from warthog.procyon.org.uk.com (unknown [10.42.28.231]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 65AA219560A2; Fri, 25 Oct 2024 20:41:49 +0000 (UTC) From: David Howells To: Christian Brauner , Steve French , Matthew Wilcox Cc: David Howells , Jeff Layton , Gao Xiang , Dominique Martinet , Marc Dionne , Paulo Alcantara , Shyam Prasad N , Tom Talpey , Eric Van Hensbergen , Ilya Dryomov , netfs@lists.linux.dev, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org, ceph-devel@vger.kernel.org, v9fs@lists.linux.dev, linux-erofs@lists.ozlabs.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 14/31] afs: Fix directory format encoding struct Date: Fri, 25 Oct 2024 21:39:41 +0100 Message-ID: <20241025204008.4076565-15-dhowells@redhat.com> In-Reply-To: <20241025204008.4076565-1-dhowells@redhat.com> References: <20241025204008.4076565-1-dhowells@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Content-Type: text/plain; charset="utf-8" The AFS directory format structure, union afs_xdr_dir_block::meta, has too many alloc counter slots declared and so pushes the hash table along and over the data. This doesn't cause a problem at the moment because I'm currently ignoring the hash table and only using the correct number of alloc_ctrs in the code anyway. In future, however, I should start using the hash table to try and speed up afs_lookup(). Fix this by using the correct constant to declare the counter array. Fixes: 4ea219a839bf ("afs: Split the directory content defs into a header") Signed-off-by: David Howells cc: Marc Dionne cc: linux-afs@lists.infradead.org --- fs/afs/xdr_fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/afs/xdr_fs.h b/fs/afs/xdr_fs.h index 8ca868164507..cc5f143d21a3 100644 --- a/fs/afs/xdr_fs.h +++ b/fs/afs/xdr_fs.h @@ -88,7 +88,7 @@ union afs_xdr_dir_block { =20 struct { struct afs_xdr_dir_hdr hdr; - u8 alloc_ctrs[AFS_DIR_MAX_BLOCKS]; + u8 alloc_ctrs[AFS_DIR_BLOCKS_WITH_CTR]; __be16 hashtable[AFS_DIR_HASHTBL_SIZE]; } meta;