linux-kernel - [PATCH 9/9] lib: zstd: Remove zstd compatibility wrapper

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Date:   Tue, 15 Sep 2020 20:43:07 -0700
From:   Nick Terrell <nickrterrell@...il.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>
Cc:     linux-crypto@...r.kernel.org, linux-btrfs@...r.kernel.org,
        squashfs-devel@...ts.sourceforge.net,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, Kernel Team <Kernel-team@...com>,
        Nick Terrell <nickrterrell@...il.com>,
        Nick Terrell <terrelln@...com>, Chris Mason <clm@...com>,
        Petr Malat <oss@...at.biz>, Johannes Weiner <jweiner@...com>,
        Niket Agarwal <niketa@...com>, Yann Collet <cyan@...com>
Subject: [PATCH 9/9] lib: zstd: Remove zstd compatibility wrapper

From: Nick Terrell <terrelln@...com>

All callers have been transitioned to the new zstd-1.4.6 API. There are
no more callers of the zstd compatibility wrapper, so delete it.

Signed-off-by: Nick Terrell <terrelln@...com>
---
 include/linux/zstd_compat.h | 112 ------------------------------------
 1 file changed, 112 deletions(-)
 delete mode 100644 include/linux/zstd_compat.h

diff --git a/include/linux/zstd_compat.h b/include/linux/zstd_compat.h
deleted file mode 100644
index 11acf14d9d70..000000000000
--- a/include/linux/zstd_compat.h
+++ /dev/null
@@ -1,112 +0,0 @@
-/*
- * 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 <linux/zstd.h>
-
-#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 <linux/zstd_errors.h>
-
-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, size_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;
-
-    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 */
-- 
2.28.0