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Tobias Klauser 20f50bba49 [release-branch.go1.15] internal/poll: use copy_file_range only on Linux kernel >= 5.3 
https://man7.org/linux/man-pages/man2/copy_file_range.2.html#VERSIONS states:

  A major rework of the kernel implementation occurred in 5.3.  Areas
  of the API that weren't clearly defined were clarified and the API
  bounds are much more strictly checked than on earlier kernels.
  Applications should target the behaviour and requirements of 5.3
  kernels.

Rather than attempting to detect the file system for source and
destination files (which means two additional statfs syscalls) and skip
copy_file_range in case of known defects (e.g. CIFS -> CIFS), just
assume copy_file_range to be broken on kernels < 5.3.

Fixes #42550

Change-Id: I3a531296182c1d6e341772cc9d2be5bf83e52575
Reviewed-on: https://go-review.googlesource.com/c/go/+/268338
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
(cherry picked from commit 1c7650aa93)
Reviewed-on: https://go-review.googlesource.com/c/go/+/269759
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2020-11-20 21:54:27 +00:00
.github .github: add link to questions in ISSUE_TEMPLATE 2020-01-06 17:05:31 +00:00
api go/printer: remove exported StdFormat flag 2020-07-17 02:15:01 +00:00
doc [release-branch.go1.15] doc/go1.14: document json.Umarshal map key support of TextUnmarshaler 2020-09-02 13:39:54 +00:00
lib/time lib/time, time/tzdata: update tz data to 2020a 2020-04-30 08:07:39 +00:00
misc [release-branch.go1.15-security] cmd/go, cmd/cgo: don't let bogus symbol set cgo_ldflag 2020-11-11 23:35:14 +00:00
src [release-branch.go1.15] internal/poll: use copy_file_range only on Linux kernel >= 5.3 2020-11-20 21:54:27 +00:00
test [release-branch.go1.15] cmd/compile: fix storeType to handle pointers to go:notinheap types 2020-10-27 23:05:53 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore
AUTHORS A+C: add Kush Patel (corporate CLA for Hootsuite Inc) 2020-07-08 00:10:44 +00:00
CONTRIBUTING.md
CONTRIBUTORS [release-branch.go1.15] all: merge master into release-branch.go1.15 2020-08-11 17:05:57 +00:00
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SECURITY.md SECURITY.md: update go versions 2019-09-26 15:34:57 +00:00
VERSION [release-branch.go1.15-security] go1.15.5 2020-11-12 16:39:58 +00:00

README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.

Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

Download and Install

Binary Distributions

Official binary distributions are available at https://golang.org/dl/.

After downloading a binary release, visit https://golang.org/doc/install or load doc/install.html in your web browser for installation instructions.

Install From Source

If a binary distribution is not available for your combination of operating system and architecture, visit https://golang.org/doc/install/source or load doc/install-source.html in your web browser for source installation instructions.

Contributing

Go is the work of thousands of contributors. We appreciate your help!

To contribute, please read the contribution guidelines: https://golang.org/doc/contribute.html

Note that the Go project uses the issue tracker for bug reports and proposals only. See https://golang.org/wiki/Questions for a list of places to ask questions about the Go language.