From patchwork Wed Sep 23 22:42:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nick Terrell X-Patchwork-Id: 11795733 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 AFFBA6CB for ; Wed, 23 Sep 2020 22:39:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8AA17214F1 for ; Wed, 23 Sep 2020 22:39:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="qvQ/xnrj" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726810AbgIWWjS (ORCPT ); Wed, 23 Sep 2020 18:39:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52604 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726199AbgIWWjM (ORCPT ); Wed, 23 Sep 2020 18:39:12 -0400 Received: from mail-pl1-x642.google.com (mail-pl1-x642.google.com [IPv6:2607:f8b0:4864:20::642]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3ABA2C0613CE; Wed, 23 Sep 2020 15:39:12 -0700 (PDT) Received: by mail-pl1-x642.google.com with SMTP id r19so533063pls.1; Wed, 23 Sep 2020 15:39:12 -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=sx8gkWC2/W3tgh9YK60ypbpCcfln3QjdLnGplGzjxCM=; b=qvQ/xnrj7PSkIjlq4rXSHLoKfQMXhyl9/83UuOG+/d7tBbTiqhBtkhEWcJj2akF3/X sGOzqhtN8bnV3+eoMz5u1hrIB0tAwRI2wlm4D6PiUt5y5m1NW1fl0oyP9Axrctu3casc G/8VYv4VG1ZoCSx8bR2UyApV3yQnC8wt57M42nwJcrW4F6uVYjMUM4HrqNhw9lVFbBVB 3aZdrRsDhGcddsEZ8QrSmRah9Lbf0S58k+yyItu6DBZBb7OB49ys07LUVLwq4YV2a3Hp amagtD7cLySkXL8Q3kRR7vksfPKW6iIP4RgVBwmOI8Szz9rAHDFjjf1aZ/Bl/dAKxqHo c4Mw== 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=sx8gkWC2/W3tgh9YK60ypbpCcfln3QjdLnGplGzjxCM=; b=FxGG0aOpG93dSNzMLMJ7hg6Hpj22aBX+fIB9vu6HrvIJ86S+Z7UfDNNuz4FjwnwKuK 1esq/uEVQN6P8YxtvslGl3KOfi9K0mkU85JkIGSD9XjmvGAuKTTKfMHN8U0KV+UeWCAr JyOSbqMn4idhHt4IkjSdxjFqfcTbf7QVhhnB+xNPz+FEDnTMFUZcCtS1GWWjOOID/68L 5nEIeIXnOrraozf3/me9wfVOdS7pMfYPa/bbbHmdiT+8uYUunj0JcbTwpTglRxIhuZsU 022aI7lsT/7q5bQjutLcKoQeL5LRSG2jnK/GbMPoWspwBtSskp4ffHZQE8jLn/JMk0Er vlqQ== X-Gm-Message-State: AOAM533PcngmL+axsEgMN/a+X1KKcgZ+afwPrkTsNFADNNmooptX0sag IqBJKnOsgv+SE/t1mlVz+SY= X-Google-Smtp-Source: ABdhPJyUXCVNxcGs2ink7+3P+XHNqdgRgUtXCEM9ymE/nASMuTlDtoP6Q3pB9TVWUiGTxIJ+OWFlfQ== X-Received: by 2002:a17:90a:1b62:: with SMTP id q89mr1340373pjq.74.1600900751702; Wed, 23 Sep 2020 15:39:11 -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 d20sm417964pjv.39.2020.09.23.15.39.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Sep 2020 15:39:11 -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 , Christoph Hellwig Subject: [PATCH v3 6/9] f2fs: zstd: Switch to the zstd-1.4.6 API Date: Wed, 23 Sep 2020 15:42:03 -0700 Message-Id: <20200923224206.68968-7-nickrterrell@gmail.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200923224206.68968-1-nickrterrell@gmail.com> References: <20200923224206.68968-1-nickrterrell@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org From: Nick Terrell Move away from the compatibility wrapper to the zstd-1.4.6 API. This code is more efficient because it uses the single-pass API instead of the streaming API. The streaming API is not necessary because the whole input and output buffers are available. This saves memory because we don't need to allocate a buffer for the window. It is also more efficient because it saves unnecessary memcpy calls. Compression memory increases from 168 KB to 204 KB because upstream uses slightly more memory. Decompression memory decreases from 1.4 MB to 158 KB. Signed-off-by: Nick Terrell --- fs/f2fs/compress.c | 102 +++++++++++++++++---------------------------- 1 file changed, 38 insertions(+), 64 deletions(-) diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c index e056f3a2b404..b79efce81651 100644 --- a/fs/f2fs/compress.c +++ b/fs/f2fs/compress.c @@ -11,7 +11,8 @@ #include #include #include -#include +#include +#include #include "f2fs.h" #include "node.h" @@ -298,21 +299,21 @@ static const struct f2fs_compress_ops f2fs_lz4_ops = { static int zstd_init_compress_ctx(struct compress_ctx *cc) { ZSTD_parameters params; - ZSTD_CStream *stream; + ZSTD_CCtx *ctx; void *workspace; unsigned int workspace_size; params = ZSTD_getParams(F2FS_ZSTD_DEFAULT_CLEVEL, cc->rlen, 0); - workspace_size = ZSTD_CStreamWorkspaceBound(params.cParams); + workspace_size = ZSTD_estimateCCtxSize_usingCParams(params.cParams); workspace = f2fs_kvmalloc(F2FS_I_SB(cc->inode), workspace_size, GFP_NOFS); if (!workspace) return -ENOMEM; - stream = ZSTD_initCStream(params, 0, workspace, workspace_size); - if (!stream) { - printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_initCStream failed\n", + ctx = ZSTD_initStaticCCtx(workspace, workspace_size); + if (!ctx) { + printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_inittaticCStream failed\n", KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, __func__); kvfree(workspace); @@ -320,7 +321,7 @@ static int zstd_init_compress_ctx(struct compress_ctx *cc) } cc->private = workspace; - cc->private2 = stream; + cc->private2 = ctx; cc->clen = cc->rlen - PAGE_SIZE - COMPRESS_HEADER_SIZE; return 0; @@ -335,65 +336,48 @@ static void zstd_destroy_compress_ctx(struct compress_ctx *cc) static int zstd_compress_pages(struct compress_ctx *cc) { - ZSTD_CStream *stream = cc->private2; - ZSTD_inBuffer inbuf; - ZSTD_outBuffer outbuf; - int src_size = cc->rlen; - int dst_size = src_size - PAGE_SIZE - COMPRESS_HEADER_SIZE; - int ret; - - inbuf.pos = 0; - inbuf.src = cc->rbuf; - inbuf.size = src_size; - - outbuf.pos = 0; - outbuf.dst = cc->cbuf->cdata; - outbuf.size = dst_size; - - ret = ZSTD_compressStream(stream, &outbuf, &inbuf); - if (ZSTD_isError(ret)) { - printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_compressStream failed, ret: %d\n", - KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, - __func__, ZSTD_getErrorCode(ret)); - return -EIO; - } - - ret = ZSTD_endStream(stream, &outbuf); + ZSTD_CCtx *ctx = cc->private2; + const size_t src_size = cc->rlen; + const size_t dst_size = src_size - PAGE_SIZE - COMPRESS_HEADER_SIZE; + ZSTD_parameters params = ZSTD_getParams(F2FS_ZSTD_DEFAULT_CLEVEL, src_size, 0); + size_t ret; + + ret = ZSTD_compress_advanced( + ctx, cc->cbuf->cdata, dst_size, cc->rbuf, src_size, NULL, 0, params); if (ZSTD_isError(ret)) { - printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_endStream returned %d\n", + /* + * there is compressed data remained in intermediate buffer due to + * no more space in cbuf.cdata + */ + if (ZSTD_getErrorCode(ret) == ZSTD_error_dstSize_tooSmall) + return -EAGAIN; + /* other compression errors return -EIO */ + printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_compress_advanced failed, err: %s\n", KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, - __func__, ZSTD_getErrorCode(ret)); + __func__, ZSTD_getErrorName(ret)); return -EIO; } - /* - * there is compressed data remained in intermediate buffer due to - * no more space in cbuf.cdata - */ - if (ret) - return -EAGAIN; - - cc->clen = outbuf.pos; + cc->clen = ret; return 0; } static int zstd_init_decompress_ctx(struct decompress_io_ctx *dic) { - ZSTD_DStream *stream; + ZSTD_DCtx *ctx; void *workspace; unsigned int workspace_size; - workspace_size = ZSTD_DStreamWorkspaceBound(MAX_COMPRESS_WINDOW_SIZE); + workspace_size = ZSTD_estimateDCtxSize(); workspace = f2fs_kvmalloc(F2FS_I_SB(dic->inode), workspace_size, GFP_NOFS); if (!workspace) return -ENOMEM; - stream = ZSTD_initDStream(MAX_COMPRESS_WINDOW_SIZE, - workspace, workspace_size); - if (!stream) { - printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_initDStream failed\n", + ctx = ZSTD_initStaticDCtx(workspace, workspace_size); + if (!ctx) { + printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_initStaticDCtx failed\n", KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, __func__); kvfree(workspace); @@ -401,7 +385,7 @@ static int zstd_init_decompress_ctx(struct decompress_io_ctx *dic) } dic->private = workspace; - dic->private2 = stream; + dic->private2 = ctx; return 0; } @@ -415,28 +399,18 @@ static void zstd_destroy_decompress_ctx(struct decompress_io_ctx *dic) static int zstd_decompress_pages(struct decompress_io_ctx *dic) { - ZSTD_DStream *stream = dic->private2; - ZSTD_inBuffer inbuf; - ZSTD_outBuffer outbuf; - int ret; - - inbuf.pos = 0; - inbuf.src = dic->cbuf->cdata; - inbuf.size = dic->clen; - - outbuf.pos = 0; - outbuf.dst = dic->rbuf; - outbuf.size = dic->rlen; + ZSTD_DCtx *ctx = dic->private2; + size_t ret; - ret = ZSTD_decompressStream(stream, &outbuf, &inbuf); + ret = ZSTD_decompressDCtx(ctx, dic->rbuf, dic->rlen, dic->cbuf->cdata, dic->clen); if (ZSTD_isError(ret)) { - printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_compressStream failed, ret: %d\n", + printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_decompressDCtx failed, err: %s\n", KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, - __func__, ZSTD_getErrorCode(ret)); + __func__, ZSTD_getErrorName(ret)); return -EIO; } - if (dic->rlen != outbuf.pos) { + if (dic->rlen != ret) { printk_ratelimited("%sF2FS-fs (%s): %s ZSTD invalid rlen:%zu, " "expected:%lu\n", KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id,