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From: Sven Schmidt <4sschmid@informatik.uni-hamburg.de>
To: akpm@linux-foundation.org
Cc: bongkyu.kim@lge.com, rsalvaterra@gmail.com,
	sergey.senozhatsky@gmail.com, gregkh@linuxfoundation.org,
	linux-kernel@vger.kernel.org, herbert@gondor.apana.org.au,
	davem@davemloft.net, linux-crypto@vger.kernel.org,
	anton@enomsg.org, ccross@android.com, keescook@chromium.org,
	tony.luck@intel.com,
	Sven Schmidt <4sschmid@informatik.uni-hamburg.de>
Subject: [PATCH v6 5/5] lib/lz4: Remove back-compat wrappers
Date: Fri, 27 Jan 2017 23:02:04 +0100	[thread overview]
Message-ID: <1485554524-4844-6-git-send-email-4sschmid@informatik.uni-hamburg.de> (raw)
In-Reply-To: <1485554524-4844-1-git-send-email-4sschmid@informatik.uni-hamburg.de>

This patch removes the functions introduced as wrappers for providing
backwards compatibility to the prior LZ4 version.
They're not needed anymore since there's no callers left.

Signed-off-by: Sven Schmidt <4sschmid@informatik.uni-hamburg.de>
---
 include/linux/lz4.h      | 73 ------------------------------------------------
 lib/lz4/lz4_compress.c   | 22 ---------------
 lib/lz4/lz4_decompress.c | 42 ----------------------------
 lib/lz4/lz4hc_compress.c | 23 ---------------
 4 files changed, 160 deletions(-)

diff --git a/include/linux/lz4.h b/include/linux/lz4.h
index ed59cb9..2844e6f 100644
--- a/include/linux/lz4.h
+++ b/include/linux/lz4.h
@@ -173,14 +173,6 @@ static inline int LZ4_compressBound(size_t isize)
 }
 
 /*
- * For backward compatibility
- */
-static inline int lz4_compressbound(size_t isize)
-{
-	return LZ4_COMPRESSBOUND(isize);
-}
-
-/*
  * LZ4_compress_default()
  *	Compresses 'sourceSize' bytes from buffer 'source'
  *	into already allocated 'dest' buffer of size 'maxOutputSize'.
@@ -249,23 +241,6 @@ int LZ4_compress_fast(const char *source, char *dest, int inputSize,
 int LZ4_compress_destSize(const char *source, char *dest, int *sourceSizePtr,
 	int targetDestSize, void *wrkmem);
 
-/*
- * lz4_compress()
- *	src    : source address of the original data
- *	src_len: size of the original data
- *	dst    : output buffer address of the compressed data
- *           This requires 'dst' of size LZ4_COMPRESSBOUND.
- *	dst_len: is the output size, which is returned after compress done
- *	workmem: address of the working memory.
- *           This requires 'workmem' of size LZ4_MEM_COMPRESS.
- *	return	: Success if return 0
- *            Error if return (< 0)
- *	note :	Destination buffer and workmem must be already allocated with
- *		the defined size.
- */
-int lz4_compress(const unsigned char *src, size_t src_len, unsigned char *dst,
-	size_t *dst_len, void *wrkmem);
-
 /*-************************************************************************
  *	Decompression Functions
  **************************************************************************/
@@ -340,37 +315,6 @@ int LZ4_decompress_safe(const char *source, char *dest, int compressedSize,
 int LZ4_decompress_safe_partial(const char *source, char *dest,
 	int compressedSize, int targetOutputSize, int maxDecompressedSize);
 
-
-/*
- * lz4_decompress_unknownoutputsize() :
- *	src     : source address of the compressed data
- *	src_len : is the input size, therefore the compressed size
- *	dest    : output buffer address of the decompressed data
- *	dest_len: is the max size of the destination buffer, which is
- *            returned with actual size of decompressed data after
- *            decompress done
- * return: Success if return 0
- *         Error if return (< 0)
- * note:   Destination buffer must be already allocated.
- */
-int lz4_decompress_unknownoutputsize(const unsigned char *src, size_t src_len,
-	unsigned char *dest, size_t *dest_len);
-
-/*
- * lz4_decompress() :
- *	src            : source address of the compressed data
- *	src_len        : is the input size,
- *                   which is returned after decompress done
- *	dest           : output buffer address of the decompressed data
- *	actual_dest_len: is the size of uncompressed data, supposing it's known
- *	return: Success if return 0
- *          Error if return (< 0)
- *	note  : Destination buffer must be already allocated.
- *          slightly faster than lz4_decompress_unknownoutputsize()
- */
-int lz4_decompress(const unsigned char *src, size_t *src_len,
-	unsigned char *dest, size_t actual_dest_len);
-
 /*-************************************************************************
  *	LZ4 HC Compression
  **************************************************************************/
@@ -399,23 +343,6 @@ int LZ4_compress_HC(const char *src, char *dst, int srcSize, int dstCapacity,
 	int compressionLevel, void *wrkmem);
 
 /*
- * lz4hc_compress()
- *	src    : source address of the original data
- *	src_len: size of the original data
- *	dst    : output buffer address of the compressed data
- *           This requires 'dst' of size LZ4_COMPRESSBOUND.
- *	dst_len: is the output size, which is returned after compress done
- *	workmem: address of the working memory.
- *           This requires 'workmem' of size LZ4HC_MEM_COMPRESS.
- * return	: Success if return 0
- *          Error if return (< 0)
- * note   : Destination buffer and workmem must be already allocated with
- *          the defined size.
- */
-int lz4hc_compress(const unsigned char *src, size_t src_len, unsigned char *dst,
-	size_t *dst_len, void *wrkmem);
-
-/*
  *	These functions compress data in successive blocks of any size,
  *	using previous blocks as dictionary. One key assumption is that previous
  *	blocks (up to 64 KB) remain read-accessible while
diff --git a/lib/lz4/lz4_compress.c b/lib/lz4/lz4_compress.c
index 295c71b..e78dbf3 100644
--- a/lib/lz4/lz4_compress.c
+++ b/lib/lz4/lz4_compress.c
@@ -872,27 +872,5 @@ int LZ4_compress_fast_continue(LZ4_stream_t *LZ4_stream, const char *source,
 }
 EXPORT_SYMBOL(LZ4_compress_fast_continue);
 
-/*-******************************
- *	For backwards compatibility
- ********************************/
-int lz4_compress(const unsigned char *src, size_t src_len, unsigned char *dst,
-	size_t *dst_len, void *wrkmem) {
-	*dst_len = LZ4_compress_default(src, dst, (int)src_len,
-		(int)((size_t)dst_len), wrkmem);
-
-	/*
-	 * Prior lz4_compress will return -1 in case of error
-	 * and 0 on success
-	 * while new LZ4_compress_fast/default
-	 * returns 0 in case of error
-	 * and the output length on success
-	 */
-	if (!dst_len)
-		return -1;
-	else
-		return 0;
-}
-EXPORT_SYMBOL(lz4_compress);
-
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_DESCRIPTION("LZ4 compressor");
diff --git a/lib/lz4/lz4_decompress.c b/lib/lz4/lz4_decompress.c
index 322ea3a..f97ee6d 100644
--- a/lib/lz4/lz4_decompress.c
+++ b/lib/lz4/lz4_decompress.c
@@ -485,47 +485,5 @@ int LZ4_decompress_fast_usingDict(const char *source, char *dest,
 }
 EXPORT_SYMBOL(LZ4_decompress_fast_usingDict);
 
-/*-******************************
- *	For backwards compatibility
- ********************************/
-int lz4_decompress_unknownoutputsize(const unsigned char *src,
-	size_t src_len, unsigned char *dest, size_t *dest_len) {
-	 *dest_len = LZ4_decompress_safe(src, dest,
-		 (int)src_len, (int)((size_t)dest_len));
-
-		/*
-		 * Prior lz4_decompress_unknownoutputsize will return
-		 * 0 for success and a negative result for error
-		 * new LZ4_decompress_safe returns
-		 * - the length of data read on success
-		 * - and also a negative result on error
-		 * meaning when result > 0, we just return 0 here
-		 */
-		if (src_len > 0)
-			return 0;
-		else
-			return -1;
-}
-EXPORT_SYMBOL(lz4_decompress_unknownoutputsize);
-
-int lz4_decompress(const unsigned char *src, size_t *src_len,
-	unsigned char *dest, size_t actual_dest_len) {
-	*src_len = LZ4_decompress_fast(src, dest, (int)actual_dest_len);
-
-	/*
-	 * Prior lz4_decompress will return
-	 * 0 for success and a negative result for error
-	 * new LZ4_decompress_fast returns
-	 * - the length of data read on success
-	 * - and also a negative result on error
-	 * meaning when result > 0, we just return 0 here
-	 */
-	if ((int)((size_t)src_len) > 0)
-		return 0;
-	else
-		return -1;
-}
-EXPORT_SYMBOL(lz4_decompress);
-
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_DESCRIPTION("LZ4 decompressor");
diff --git a/lib/lz4/lz4hc_compress.c b/lib/lz4/lz4hc_compress.c
index da8063c..a29dad0 100644
--- a/lib/lz4/lz4hc_compress.c
+++ b/lib/lz4/lz4hc_compress.c
@@ -753,28 +753,5 @@ int LZ4_saveDictHC(
 }
 EXPORT_SYMBOL(LZ4_saveDictHC);
 
-/*-******************************
- *	For backwards compatibility
- ********************************/
-int lz4hc_compress(const unsigned char *src, size_t src_len,
-	unsigned char *dst, size_t *dst_len, void *wrkmem)
-{
-	*dst_len = LZ4_compress_HC(src, dst, (int)src_len,
-		(int)((size_t)dst_len), LZ4HC_DEFAULT_CLEVEL, wrkmem);
-
-	/*
-	 * Prior lz4hc_compress will return -1 in case of error
-	 * and 0 on success
-	 * while new LZ4_compress_HC
-	 * returns 0 in case of error
-	 * and the output length on success
-	 */
-	if (!dst_len)
-		return -1;
-	else
-		return 0;
-}
-EXPORT_SYMBOL(lz4hc_compress);
-
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_DESCRIPTION("LZ4 HC compressor");
-- 
2.1.4

  parent reply	other threads:[~2017-01-27 22:04 UTC|newest]

Thread overview: 84+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1482259992-16680-1-git-send-email-4sschmid@informatik.uni-hamburg.de>
     [not found] ` <1482259992-16680-2-git-send-email-4sschmid@informatik.uni-hamburg.de>
2016-12-22 13:25   ` [PATCH 1/3] crypto: Change lz4 modules to work with new lz4 compressor module version Sergey Senozhatsky
2017-01-07 16:55 ` [PATCH v2 0/4] Update LZ4 compressor module Sven Schmidt
2017-01-07 16:55   ` [PATCH v2 1/4] lib: Update LZ4 compressor module based on LZ4 v1.7.2 Sven Schmidt
2017-01-08 11:22     ` Greg KH
2017-01-10  9:32       ` Sven Schmidt
2017-01-10  9:59         ` Greg KH
2017-01-08 11:25     ` Greg KH
2017-01-08 11:33       ` Rui Salvaterra
2017-01-10  9:21       ` Sven Schmidt
2017-01-10 10:00         ` Greg KH
2017-01-10 10:50           ` Willy Tarreau
2017-01-07 16:55   ` [PATCH v2 2/4] lib/decompress_unlz4: Change module to work with new LZ4 module version Sven Schmidt
2017-01-08 11:23     ` Greg KH
2017-01-07 16:55   ` [PATCH v2 3/4] crypto: Change LZ4 modules " Sven Schmidt
2017-01-07 16:55   ` [PATCH v2 4/4] fs/pstore: fs/squashfs: Change usage of LZ4 to comply " Sven Schmidt
2017-01-07 21:33     ` Kees Cook
2017-01-10  9:45       ` Sven Schmidt
2017-01-21 15:09 ` [PATCH v3 0/4] Update LZ4 compressor module Sven Schmidt
2017-01-21 15:09   ` [PATCH 1/4] lib: " Sven Schmidt
2017-01-21 15:56     ` kbuild test robot
2017-01-21 16:16     ` kbuild test robot
2017-01-21 17:38     ` kbuild test robot
2017-01-22 11:05     ` Greg KH
2017-01-21 15:09   ` [PATCH 2/4] lib/decompress_unlz4: Change module to work with new LZ4 module version Sven Schmidt
2017-01-21 15:09   ` [PATCH 3/4] crypto: Change LZ4 modules " Sven Schmidt
2017-01-21 15:09   ` [PATCH 4/4] fs/pstore: fs/squashfs: Change usage of LZ4 to work with new LZ4 version Sven Schmidt
2017-01-22 19:35 ` [PATCH v4 0/4] Update LZ4 compressor module Sven Schmidt
2017-01-22 19:35   ` [PATCH v4 1/4] lib: " Sven Schmidt
2017-01-24  0:23     ` Andrew Morton
2017-01-24 16:48       ` Sven Schmidt
2017-01-22 19:35   ` [PATCH v4 2/4] lib/decompress_unlz4: Change module to work with new LZ4 module version Sven Schmidt
2017-01-22 19:35   ` [PATCH v4 3/4] crypto: Change LZ4 modules " Sven Schmidt
2017-01-22 19:35   ` [PATCH v4 4/4] fs/pstore: fs/squashfs: Change usage of LZ4 to work with new LZ4 version Sven Schmidt
2017-01-26  7:57 ` [PATCH v5 0/5] Update LZ4 compressor module Sven Schmidt
2017-01-26  7:57   ` [PATCH v5 1/5] lib: " Sven Schmidt
2017-01-26  7:57   ` [PATCH v5 2/5] lib/decompress_unlz4: Change module to work with new LZ4 module version Sven Schmidt
2017-01-26  7:57   ` [PATCH v5 3/5] crypto: Change LZ4 modules " Sven Schmidt
2017-01-26  7:57   ` [PATCH v5 4/5] fs/pstore: fs/squashfs: Change usage of LZ4 to work with new LZ4 version Sven Schmidt
2017-01-26  7:57   ` [PATCH v5 5/5] lib/lz4: Remove back-compat wrappers Sven Schmidt
2017-01-26  9:19   ` [PATCH v5 0/5] Update LZ4 compressor module Eric Biggers
2017-01-26 14:15     ` Sven Schmidt
2017-01-27 22:01 ` [PATCH v6 " Sven Schmidt
2017-01-27 22:02   ` [PATCH v6 1/5] lib: " Sven Schmidt
2017-01-31 22:27     ` Jonathan Corbet
2017-02-01 20:18       ` Sven Schmidt
2017-01-27 22:02   ` [PATCH v6 2/5] lib/decompress_unlz4: Change module to work with new LZ4 module version Sven Schmidt
2017-01-27 22:02   ` [PATCH v6 3/5] crypto: Change LZ4 modules " Sven Schmidt
2017-01-27 22:02   ` [PATCH v6 4/5] fs/pstore: fs/squashfs: Change usage of LZ4 to work with new LZ4 version Sven Schmidt
2017-01-27 22:02   ` Sven Schmidt [this message]
2017-02-05 19:09 ` [PATCH v7 0/5] Update LZ4 compressor module Sven Schmidt
2017-02-05 19:09   ` [PATCH v7 1/5] lib: " Sven Schmidt
2017-02-05 19:09   ` [PATCH v7 2/5] lib/decompress_unlz4: Change module to work with new LZ4 module version Sven Schmidt
2017-02-05 19:09   ` [PATCH v7 3/5] crypto: Change LZ4 modules " Sven Schmidt
2017-02-05 19:09   ` [PATCH v7 4/5] fs/pstore: fs/squashfs: Change usage of LZ4 to work with new LZ4 version Sven Schmidt
2017-02-05 19:09   ` [PATCH v7 5/5] lib/lz4: Remove back-compat wrappers Sven Schmidt
2017-02-08 23:31   ` [PATCH v7 0/5] Update LZ4 compressor module Minchan Kim
2017-02-09  0:24     ` Eric Biggers
2017-02-09  5:24       ` Eric Biggers
2017-02-09 11:05         ` Sven Schmidt
2017-02-09 18:20           ` Eric Biggers
2017-02-10  0:14         ` Minchan Kim
2017-02-09 11:02       ` Sven Schmidt
2017-02-09 18:29         ` Eric Biggers
2017-02-10  3:57           ` David Miller
2017-02-09 10:56     ` Sven Schmidt
2017-02-10  0:13       ` Minchan Kim
2017-02-12 11:16         ` Sven Schmidt
2017-02-12 11:16           ` [PATCH] lz4: fix performance regressions Sven Schmidt
2017-02-12 13:05             ` Willy Tarreau
2017-02-12 15:20               ` Sven Schmidt
2017-02-12 21:41                 ` Willy Tarreau
2017-02-13 11:53                   ` Sven Schmidt
2017-02-13 13:37                     ` Willy Tarreau
2017-02-12 23:38             ` Eric Biggers
2017-02-14 10:33               ` Sven Schmidt
2017-02-13  0:03           ` [PATCH v7 0/5] Update LZ4 compressor module Minchan Kim
2017-02-13 12:08             ` Sven Schmidt
2017-02-15  7:29               ` Minchan Kim
2017-02-15 18:16 ` [PATCH v8 " Sven Schmidt
2017-02-15 18:16   ` [PATCH v8 1/5] lib: " Sven Schmidt
2017-02-15 18:16   ` [PATCH v8 2/5] lib/decompress_unlz4: Change module to work with new LZ4 module version Sven Schmidt
2017-02-15 18:16   ` [PATCH v8 3/5] crypto: Change LZ4 modules " Sven Schmidt
2017-02-15 18:16   ` [PATCH v8 4/5] fs/pstore: fs/squashfs: Change usage of LZ4 to work with new LZ4 version Sven Schmidt
2017-02-15 18:16   ` [PATCH v8 5/5] lib/lz4: Remove back-compat wrappers Sven Schmidt

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