From patchwork Mon Oct 4 16:57:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Neeraj Singh (WINDOWS-SFS)" X-Patchwork-Id: 12534349 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D822C433EF for ; Mon, 4 Oct 2021 16:58:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7B68A61357 for ; Mon, 4 Oct 2021 16:58:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237960AbhJDQ7y (ORCPT ); Mon, 4 Oct 2021 12:59:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56976 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237889AbhJDQ7n (ORCPT ); Mon, 4 Oct 2021 12:59:43 -0400 Received: from mail-wm1-x334.google.com (mail-wm1-x334.google.com [IPv6:2a00:1450:4864:20::334]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EDE22C061753 for ; Mon, 4 Oct 2021 09:57:53 -0700 (PDT) Received: by mail-wm1-x334.google.com with SMTP id s24so13980361wmh.4 for ; Mon, 04 Oct 2021 09:57:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:in-reply-to:references:from:date:subject:fcc :content-transfer-encoding:mime-version:to:cc; bh=fv7nQ5ZUwa4uFFNumJcqLSj/tyOInbTAFP+n8tQn3ko=; b=LZ/LYkNqQ3O9dyC60IxG2iRCgYz0XAor8wzW0gw684NiJU6BLyr2b6reyJ1rPO1oMZ h+NkFjUrXudHUqBe4SyvepFjIRsQEV9UZT115it8gu4j71ZGdmrmhxkI2KU9WE2Ms9p6 n4GZfA8oU56mX9pbrF7wxjChX5Af8+8D11vofYdhSVPFOhVyehPLGiKfRIerCmGocQn8 xv7G7PyPlrtn5tQVGhbBlsKItwPSKuQNK0wLeTYTkExw34rDGAcQ10NmlzF8mpwj1hav C09MwzqPWANIl8aCaoXnxupCJW6hyoS9+AL2/d8x3ire3foooHUXyvkMS3bp/v0fcu/G O8kw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:in-reply-to:references:from:date :subject:fcc:content-transfer-encoding:mime-version:to:cc; bh=fv7nQ5ZUwa4uFFNumJcqLSj/tyOInbTAFP+n8tQn3ko=; b=TyLVRqV8Jpe7mNkmoFnEWkcEV64PiuRbNaI6CXRfbkNt7jwKmkbX+njXVBjpKYJd5m E+S7POwx8ZyYzg2pDnybko/rdHffamT7qSg+bqN1K8sazpQekNePkL2izA3pWw+OiMt3 Dm6UTMbg7SjWkObB9fAKONOyM8HVe8Dj3xalK2nFkm8383q7N8Qvdg2ObHCpI5m2gA65 i9mO4Y60Tb31iEKTt5JoJ27B7BYtPQAgA5sDsFswLrGNJjQJye6URiP5E/PUEz/bySDl I49QLfMMXhoqCcbDScQOvPB4X2VO3gRN/pXfZhXlkVyone5Oh6D3w0gfBIXT88bvhRV5 OEgg== X-Gm-Message-State: AOAM530U7/15ot5K6xrpjPpZ2hTioJJiDonQ9jZZ3D3xb1f8gIftgzB9 qn03juzBlRmcMmruCZ/Qhc9e9dlDM88= X-Google-Smtp-Source: ABdhPJzSvIW+3O+cfFFsf2YkujGCYfKRs9tQ8q3RfyWkBr+rYb9JpMGNsc3kf9RsBP1T8H5BxsNxvw== X-Received: by 2002:a05:600c:21ca:: with SMTP id x10mr13281615wmj.106.1633366672559; Mon, 04 Oct 2021 09:57:52 -0700 (PDT) Received: from [127.0.0.1] ([13.74.141.28]) by smtp.gmail.com with ESMTPSA id i14sm2110824wmq.29.2021.10.04.09.57.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Oct 2021 09:57:52 -0700 (PDT) Message-Id: <8df32eaaa9a9c41b6d9d49a50630952f14f33495.1633366667.git.gitgitgadget@gmail.com> In-Reply-To: References: Date: Mon, 04 Oct 2021 16:57:43 +0000 Subject: [PATCH v8 5/9] core.fsyncobjectfiles: add windows support for batch mode Fcc: Sent MIME-Version: 1.0 To: git@vger.kernel.org Cc: Neeraj-Personal , Johannes Schindelin , Jeff King , Jeff Hostetler , Christoph Hellwig , =?utf-8?b?w4Z2YXIgQXJuZmrDtnLDsA==?= Bjarmason , "Randall S. Becker" , Bagas Sanjaya , Elijah Newren , "Neeraj K. Singh" , Neeraj Singh Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org From: Neeraj Singh From: Neeraj Singh This commit adds a win32 implementation for fsync_no_flush that is called git_fsync. The 'NtFlushBuffersFileEx' function being called is available since Windows 8. If the function is not available, we return -1 and Git falls back to doing a full fsync. The operating system is told to flush data only without a hardware flush primitive. A later full fsync will cause the metadata log to be flushed and then the disk cache to be flushed on NTFS and ReFS. Other filesystems will treat this as a full flush operation. I added a new file here for this system call so as not to conflict with downstream changes in the git-for-windows repository related to fscache. Signed-off-by: Neeraj Singh --- compat/mingw.h | 3 +++ compat/win32/flush.c | 28 ++++++++++++++++++++++++++++ config.mak.uname | 2 ++ contrib/buildsystems/CMakeLists.txt | 3 ++- wrapper.c | 4 ++++ 5 files changed, 39 insertions(+), 1 deletion(-) create mode 100644 compat/win32/flush.c diff --git a/compat/mingw.h b/compat/mingw.h index c9a52ad64a6..6074a3d3ced 100644 --- a/compat/mingw.h +++ b/compat/mingw.h @@ -329,6 +329,9 @@ int mingw_getpagesize(void); #define getpagesize mingw_getpagesize #endif +int win32_fsync_no_flush(int fd); +#define fsync_no_flush win32_fsync_no_flush + struct rlimit { unsigned int rlim_cur; }; diff --git a/compat/win32/flush.c b/compat/win32/flush.c new file mode 100644 index 00000000000..75324c24ee7 --- /dev/null +++ b/compat/win32/flush.c @@ -0,0 +1,28 @@ +#include "../../git-compat-util.h" +#include +#include "lazyload.h" + +int win32_fsync_no_flush(int fd) +{ + IO_STATUS_BLOCK io_status; + +#define FLUSH_FLAGS_FILE_DATA_ONLY 1 + + DECLARE_PROC_ADDR(ntdll.dll, NTSTATUS, NtFlushBuffersFileEx, + HANDLE FileHandle, ULONG Flags, PVOID Parameters, ULONG ParameterSize, + PIO_STATUS_BLOCK IoStatusBlock); + + if (!INIT_PROC_ADDR(NtFlushBuffersFileEx)) { + errno = ENOSYS; + return -1; + } + + memset(&io_status, 0, sizeof(io_status)); + if (NtFlushBuffersFileEx((HANDLE)_get_osfhandle(fd), FLUSH_FLAGS_FILE_DATA_ONLY, + NULL, 0, &io_status)) { + errno = EINVAL; + return -1; + } + + return 0; +} diff --git a/config.mak.uname b/config.mak.uname index e6d482fbcc6..34c93314a50 100644 --- a/config.mak.uname +++ b/config.mak.uname @@ -451,6 +451,7 @@ endif CFLAGS = BASIC_CFLAGS = -nologo -I. -Icompat/vcbuild/include -DWIN32 -D_CONSOLE -DHAVE_STRING_H -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_DEPRECATE COMPAT_OBJS = compat/msvc.o compat/winansi.o \ + compat/win32/flush.o \ compat/win32/path-utils.o \ compat/win32/pthread.o compat/win32/syslog.o \ compat/win32/trace2_win32_process_info.o \ @@ -626,6 +627,7 @@ ifneq (,$(findstring MINGW,$(uname_S))) COMPAT_CFLAGS += -DSTRIP_EXTENSION=\".exe\" COMPAT_OBJS += compat/mingw.o compat/winansi.o \ compat/win32/trace2_win32_process_info.o \ + compat/win32/flush.o \ compat/win32/path-utils.o \ compat/win32/pthread.o compat/win32/syslog.o \ compat/win32/dirent.o diff --git a/contrib/buildsystems/CMakeLists.txt b/contrib/buildsystems/CMakeLists.txt index 171b4124afe..b573a5ee122 100644 --- a/contrib/buildsystems/CMakeLists.txt +++ b/contrib/buildsystems/CMakeLists.txt @@ -261,7 +261,8 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Windows") NOGDI OBJECT_CREATION_MODE=1 __USE_MINGW_ANSI_STDIO=0 USE_NED_ALLOCATOR OVERRIDE_STRDUP MMAP_PREVENTS_DELETE USE_WIN32_MMAP UNICODE _UNICODE HAVE_WPGMPTR ENSURE_MSYSTEM_IS_SET) - list(APPEND compat_SOURCES compat/mingw.c compat/winansi.c compat/win32/path-utils.c + list(APPEND compat_SOURCES compat/mingw.c compat/winansi.c + compat/win32/flush.c compat/win32/path-utils.c compat/win32/pthread.c compat/win32mmap.c compat/win32/syslog.c compat/win32/trace2_win32_process_info.c compat/win32/dirent.c compat/nedmalloc/nedmalloc.c compat/strdup.c) diff --git a/wrapper.c b/wrapper.c index bb4f9f043ce..1a1e2fba9c9 100644 --- a/wrapper.c +++ b/wrapper.c @@ -567,6 +567,10 @@ int git_fsync(int fd, enum fsync_action action) SYNC_FILE_RANGE_WAIT_AFTER); #endif +#ifdef fsync_no_flush + return fsync_no_flush(fd); +#endif + errno = ENOSYS; return -1;