From patchwork Tue Sep 22 21:09:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nick Terrell X-Patchwork-Id: 11793129 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 09A2A618 for ; Tue, 22 Sep 2020 21:05:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CCA9623600 for ; Tue, 22 Sep 2020 21:05:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="FCwxSgM6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726788AbgIVVF0 (ORCPT ); Tue, 22 Sep 2020 17:05:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726615AbgIVVF0 (ORCPT ); Tue, 22 Sep 2020 17:05:26 -0400 Received: from mail-pf1-x430.google.com (mail-pf1-x430.google.com [IPv6:2607:f8b0:4864:20::430]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1A2ABC061755; Tue, 22 Sep 2020 14:05:26 -0700 (PDT) Received: by mail-pf1-x430.google.com with SMTP id b124so13582624pfg.13; Tue, 22 Sep 2020 14:05:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=4G8NJ7gBvmk7nE2Yhc5f36mYV1caN+TA2ng5rrNJ52k=; b=FCwxSgM6K2/NiOo2CDV2fpSy7IIVzi4O1xn2OtkQwVjhj4MbNdor+BRP0zjoEKMk7K 7+QzHcXXIJngJ96pqMLWLNqa5R6vlh4tmeGegYAT8Mkb8BdsX/0XaJLVVg19HCE0Bboy y4RjMHZomNHPwQCgX5gYxXPEHCr6bNSk7p5hCU73P5xVcFC1FwS0JfCu1VKaU+R/TlB8 UTiWxn6lNanI2gumsU9tZAPPDerSxjzPLXgSeUxQprsOz56QlSWDUDn9Dfx/D2Z404+I WNuhxZ9UuzbrxvXKOPEYxlSlSpPfa/Tf5XPtRcF8a0yCzaWtObhLQ7w/685adZ8hATDp 8aXg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=4G8NJ7gBvmk7nE2Yhc5f36mYV1caN+TA2ng5rrNJ52k=; b=c+7qQ8Ga9dXisdtpAbFMhVB4L2RezdLj2OU3mL9w1aOW3QkvLE+cKiZpcd6FQdU+YU XBz5wrBiHGa9bJcJjiz7O25vHEWgqlXdiaxs+oWIYfJQNqA4aWgMUuL6fu7/XeR7ON5w dNjBqzSx2Hul2wc/X1IG1OcmKPS20mZjsL+EWucYsD1uPytdsRu48llCPZeQiYtr1Ns0 cfpVtbkNuObcTxjq9znQpjifWgumjxg3ydSRygn7ytu4hYSMBeQZgZkhVWiz3n23Klr6 8BdrDQtfdj9A7tiK79Z4+nHoFv90S75yXJDAb5u4IU1RIb5wsR1e3525CLSrXxv9mZCp LfNg== X-Gm-Message-State: AOAM5325588dOG97Cz6Ux5MxVmq8Zu+ZyrPgfovTJm6GGYfDvKJfzUNa 6v6lj79rsU47zER+3VEjOOk= X-Google-Smtp-Source: ABdhPJzGdXirHxahAlzuI006RfM4OJ32uzMPP02lnvomYipfH9OsmI8py/MeDfhemsciTS0xEA5zCg== X-Received: by 2002:a63:c74f:: with SMTP id v15mr4876886pgg.143.1600808725467; Tue, 22 Sep 2020 14:05:25 -0700 (PDT) Received: from nickserv.localdomain (c-98-33-101-203.hsd1.ca.comcast.net. [98.33.101.203]) by smtp.gmail.com with ESMTPSA id i15sm16118945pfk.145.2020.09.22.14.05.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Sep 2020 14:05:24 -0700 (PDT) From: Nick Terrell To: Herbert Xu Cc: linux-crypto@vger.kernel.org, linux-btrfs@vger.kernel.org, squashfs-devel@lists.sourceforge.net, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, Kernel Team , Nick Terrell , Nick Terrell , Chris Mason , Petr Malat , Johannes Weiner , Niket Agarwal , Yann Collet Subject: [PATCH v2 1/9] lib: zstd: Add zstd compatibility wrapper Date: Tue, 22 Sep 2020 14:09:16 -0700 Message-Id: <20200922210924.1725-2-nickrterrell@gmail.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200922210924.1725-1-nickrterrell@gmail.com> References: <20200922210924.1725-1-nickrterrell@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org From: Nick Terrell Adds zstd_compat.h which provides the necessary functions from the current zstd.h API. It is only active for zstd versions 1.4.6 and newer. That means it is disabled currently, but will become active when a later patch in this series updates the zstd library in the kernel to 1.4.6. This header allows the zstd upgrade to 1.4.6 without changing any callers, since they all include zstd through the compatibility wrapper. Later patches in this series transition each caller away from the compatibility wrapper. After all the callers have been transitioned away from the compatibility wrapper, the final patch in this series deletes it. Signed-off-by: Nick Terrell --- crypto/zstd.c | 2 +- fs/btrfs/zstd.c | 2 +- fs/f2fs/compress.c | 2 +- fs/squashfs/zstd_wrapper.c | 2 +- include/linux/zstd_compat.h | 116 ++++++++++++++++++++++++++++++++++++ lib/decompress_unzstd.c | 2 +- 6 files changed, 121 insertions(+), 5 deletions(-) create mode 100644 include/linux/zstd_compat.h diff --git a/crypto/zstd.c b/crypto/zstd.c index 1a3309f066f7..dcda3cad3b5c 100644 --- a/crypto/zstd.c +++ b/crypto/zstd.c @@ -11,7 +11,7 @@ #include #include #include -#include +#include #include diff --git a/fs/btrfs/zstd.c b/fs/btrfs/zstd.c index 9a4871636c6c..a7367ff573d4 100644 --- a/fs/btrfs/zstd.c +++ b/fs/btrfs/zstd.c @@ -16,7 +16,7 @@ #include #include #include -#include +#include #include "misc.h" #include "compression.h" #include "ctree.h" diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c index 1dfb126a0cb2..e056f3a2b404 100644 --- a/fs/f2fs/compress.c +++ b/fs/f2fs/compress.c @@ -11,7 +11,7 @@ #include #include #include -#include +#include #include "f2fs.h" #include "node.h" diff --git a/fs/squashfs/zstd_wrapper.c b/fs/squashfs/zstd_wrapper.c index b7cb1faa652d..f8c512a6204e 100644 --- a/fs/squashfs/zstd_wrapper.c +++ b/fs/squashfs/zstd_wrapper.c @@ -11,7 +11,7 @@ #include #include #include -#include +#include #include #include "squashfs_fs.h" diff --git a/include/linux/zstd_compat.h b/include/linux/zstd_compat.h new file mode 100644 index 000000000000..cda9208bf04a --- /dev/null +++ b/include/linux/zstd_compat.h @@ -0,0 +1,116 @@ +/* + * Copyright (c) 2016-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of https://github.com/facebook/zstd. + * An additional grant of patent rights can be found in the PATENTS file in the + * same directory. + * + * This program is free software; you can redistribute it and/or modify it under + * the terms of the GNU General Public License version 2 as published by the + * Free Software Foundation. This program is dual-licensed; you may select + * either version 2 of the GNU General Public License ("GPL") or BSD license + * ("BSD"). + */ + +#ifndef ZSTD_COMPAT_H +#define ZSTD_COMPAT_H + +#include + +#if defined(ZSTD_VERSION_NUMBER) && (ZSTD_VERSION_NUMBER >= 10406) +/* + * This header provides backwards compatibility for the zstd-1.4.6 library + * upgrade. This header allows us to upgrade the zstd library version without + * modifying any callers. Then we will migrate callers from the compatibility + * wrapper one at a time until none remain. At which point we will delete this + * header. + * + * It is temporary and will be deleted once the upgrade is complete. + */ + +#include + +static inline size_t ZSTD_CCtxWorkspaceBound(ZSTD_compressionParameters compression_params) +{ + return ZSTD_estimateCCtxSize_usingCParams(compression_params); +} + +static inline size_t ZSTD_CStreamWorkspaceBound(ZSTD_compressionParameters compression_params) +{ + return ZSTD_estimateCStreamSize_usingCParams(compression_params); +} + +static inline size_t ZSTD_DCtxWorkspaceBound(void) +{ + return ZSTD_estimateDCtxSize(); +} + +static inline size_t ZSTD_DStreamWorkspaceBound(unsigned long long window_size) +{ + return ZSTD_estimateDStreamSize(window_size); +} + +static inline ZSTD_CCtx* ZSTD_initCCtx(void* wksp, size_t wksp_size) +{ + if (wksp == NULL) + return NULL; + return ZSTD_initStaticCCtx(wksp, wksp_size); +} + +static inline ZSTD_CStream* ZSTD_initCStream_compat(ZSTD_parameters params, uint64_t pledged_src_size, void* wksp, size_t wksp_size) +{ + ZSTD_CStream* cstream; + size_t ret; + + if (wksp == NULL) + return NULL; + + cstream = ZSTD_initStaticCStream(wksp, wksp_size); + if (cstream == NULL) + return NULL; + + /* 0 means unknown in old API but means 0 in new API */ + if (pledged_src_size == 0) + pledged_src_size = ZSTD_CONTENTSIZE_UNKNOWN; + + ret = ZSTD_initCStream_advanced(cstream, NULL, 0, params, pledged_src_size); + if (ZSTD_isError(ret)) + return NULL; + + return cstream; +} +#define ZSTD_initCStream ZSTD_initCStream_compat + +static inline ZSTD_DCtx* ZSTD_initDCtx(void* wksp, size_t wksp_size) +{ + if (wksp == NULL) + return NULL; + return ZSTD_initStaticDCtx(wksp, wksp_size); +} + +static inline ZSTD_DStream* ZSTD_initDStream_compat(unsigned long long window_size, void* wksp, size_t wksp_size) +{ + if (wksp == NULL) + return NULL; + (void)window_size; + return ZSTD_initStaticDStream(wksp, wksp_size); +} +#define ZSTD_initDStream ZSTD_initDStream_compat + +typedef ZSTD_frameHeader ZSTD_frameParams; + +static inline size_t ZSTD_getFrameParams(ZSTD_frameParams* frame_params, const void* src, size_t src_size) +{ + return ZSTD_getFrameHeader(frame_params, src, src_size); +} + +static inline size_t ZSTD_compressCCtx_compat(ZSTD_CCtx* cctx, void* dst, size_t dst_capacity, const void* src, size_t src_size, ZSTD_parameters params) +{ + return ZSTD_compress_advanced(cctx, dst, dst_capacity, src, src_size, NULL, 0, params); +} +#define ZSTD_compressCCtx ZSTD_compressCCtx_compat + +#endif /* ZSTD_VERSION_NUMBER >= 10406 */ +#endif /* ZSTD_COMPAT_H */ diff --git a/lib/decompress_unzstd.c b/lib/decompress_unzstd.c index 0ad2c15479ed..dbc290af26b4 100644 --- a/lib/decompress_unzstd.c +++ b/lib/decompress_unzstd.c @@ -77,7 +77,7 @@ #include #include -#include +#include /* 128MB is the maximum window size supported by zstd. */ #define ZSTD_WINDOWSIZE_MAX (1 << ZSTD_WINDOWLOG_MAX)