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Sun, 27 Sep 2026 21:26:02 -0700 (PDT) Date: Mon, 28 Sep 2026 13:25:53 +0900 From: Sergey Senozhatsky To: Michal Wilczynski Message-ID: References: <20260925-lz4-vendor-upstream-v1-0-1c7ffbe21c4b@samsung.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20260925-lz4-vendor-upstream-v1-0-1c7ffbe21c4b@samsung.com> X-Headers-End: 1xB3Oj-0001KO-I0 Subject: Re: [f2fs-dev] [PATCH RFC 0/9] lib/lz4: stop forking upstream LZ4, vendor it instead X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Dave Hansen , linux-mips@vger.kernel.org, "James E.J. Bottomley" , Bill Wendling , "H. Peter Anvin" , Alexander Gordeev , Sungguk , Marek Szyprowski , linux-s390@vger.kernel.org, Herbert Xu , Minchan Kim , Helge Deller , x86@kernel.org, Russell King , Ingo Molnar , Yann Collet , Gao Xiang , Christian Borntraeger , Sven Schnelle , llvm@lists.linux.dev, Vasily Gorbik , Heiko Carstens , linux-crypto@vger.kernel.org, Nathan Chancellor , Nick Terrell , Borislav Petkov , Jaegeuk Kim , linux-arm-kernel@lists.infradead.org, Jens Axboe , linux-block@vger.kernel.org, Thomas Bogendoerfer , linux-parisc@vger.kernel.org, Nick Desaulniers , linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, Sergey Senozhatsky , Thomas Gleixner , Justin Stitt , Phillip Lougher , Andrew Morton , linux-erofs@lists.ozlabs.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net On (26/09/25 13:27), Michal Wilczynski wrote: [..] > Michal Wilczynski (9): > lib/lz4: import upstream LZ4 sources verbatim > lib/lz4: backport upstream's -Wmissing-prototypes fix > lib/lz4: add the build environment for the vendored sources > arch: boot: put the LZ4 freestanding headers on the decompressor path > lib/lz4: switch the compressor to the vendored sources > lib/lz4: switch the HC compressor to the vendored sources > lib/lz4: switch the decompressor to the vendored sources > lib/lz4: fold lz4_kernel_api.h into > MAINTAINERS: add an entry for the LZ4 compression library On my x86_64 build .text size change seems to be quite significant: ./scripts/bloat-o-meter lib/lz4/lz4_compress-old.ko lib/lz4/lz4_compress.ko add/remove: 0/2 grow/shrink: 5/1 up/down: 8022/-1755 (6267) Function old new delta LZ4_compress_fast_continue 6028 10486 +4458 LZ4_compress_destSize 158 3112 +2954 LZ4_compress_fast_extState 4078 4597 +519 LZ4_saveDict 82 153 +71 __UNIQUE_ID_modinfo_466 52 72 +20 __pfx_LZ4_compress_destSize_generic 16 - -16 LZ4_loadDict 261 204 -57 LZ4_compress_destSize_generic 1682 - -1682 Total: Before=14756, After=21023, chg +42.47% _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4E61AC9832F for ; 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Sun, 27 Sep 2026 21:26:02 -0700 (PDT) Received: from google.com ([2a00:79e0:2031:6:fdbe:318b:98fe:bd96]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3a0b99917besm17891690a91.14.2026.09.27.21.25.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 27 Sep 2026 21:26:02 -0700 (PDT) Date: Mon, 28 Sep 2026 13:25:53 +0900 From: Sergey Senozhatsky To: Michal Wilczynski Cc: Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , Russell King , Thomas Bogendoerfer , "James E.J. Bottomley" , Helge Deller , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Minchan Kim , Sergey Senozhatsky , Jens Axboe , Andrew Morton , linux-kernel@vger.kernel.org, llvm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-s390@vger.kernel.org, linux-block@vger.kernel.org, Yann Collet , Nick Terrell , Gao Xiang , Chao Yu , Jaegeuk Kim , Herbert Xu , Phillip Lougher , Sungguk , Jaehoon Chung , Marek Szyprowski , linux-erofs@lists.ozlabs.org, linux-f2fs-devel@lists.sourceforge.net, linux-crypto@vger.kernel.org Subject: Re: [PATCH RFC 0/9] lib/lz4: stop forking upstream LZ4, vendor it instead Message-ID: References: <20260925-lz4-vendor-upstream-v1-0-1c7ffbe21c4b@samsung.com> X-Mailing-List: linux-erofs@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260925-lz4-vendor-upstream-v1-0-1c7ffbe21c4b@samsung.com> On (26/09/25 13:27), Michal Wilczynski wrote: [..] > Michal Wilczynski (9): > lib/lz4: import upstream LZ4 sources verbatim > lib/lz4: backport upstream's -Wmissing-prototypes fix > lib/lz4: add the build environment for the vendored sources > arch: boot: put the LZ4 freestanding headers on the decompressor path > lib/lz4: switch the compressor to the vendored sources > lib/lz4: switch the HC compressor to the vendored sources > lib/lz4: switch the decompressor to the vendored sources > lib/lz4: fold lz4_kernel_api.h into > MAINTAINERS: add an entry for the LZ4 compression library On my x86_64 build .text size change seems to be quite significant: ./scripts/bloat-o-meter lib/lz4/lz4_compress-old.ko lib/lz4/lz4_compress.ko add/remove: 0/2 grow/shrink: 5/1 up/down: 8022/-1755 (6267) Function old new delta LZ4_compress_fast_continue 6028 10486 +4458 LZ4_compress_destSize 158 3112 +2954 LZ4_compress_fast_extState 4078 4597 +519 LZ4_saveDict 82 153 +71 __UNIQUE_ID_modinfo_466 52 72 +20 __pfx_LZ4_compress_destSize_generic 16 - -16 LZ4_loadDict 261 204 -57 LZ4_compress_destSize_generic 1682 - -1682 Total: Before=14756, After=21023, chg +42.47%