From: Pádraig Brady <P@draigBrady.com>
Date: Fri, 28 Jan 2022 15:13:25 +0000 (+0000)
Subject: doc: NEWS: explain _why_ copy_file_range() is used
X-Git-Tag: v9.1~124
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=795a16627c02fe47da1c7db7779b53faa1a5cbcf;p=thirdparty%2Fcoreutils.git

doc: NEWS: explain _why_ copy_file_range() is used

* NEWS: Mention why we're making the change in behavior in cat(1).
---

diff --git a/NEWS b/NEWS
index 757abee154..ebcd5cb2f5 100644
--- a/NEWS
+++ b/NEWS
@@ -35,7 +35,8 @@ GNU coreutils NEWS                                    -*- outline -*-
 ** Changes in behavior
 
   cat now uses the copy_file_range syscall if available, when doing
-  simple copies between regular files.
+  simple copies between regular files.  This may be more efficient, by avoiding
+  user space copies, and possibly employing copy offloading or reflinking.
 
   date +'%-N' now suppresses excess trailing digits, instead of always
   padding them with zeros to 9 digits.  It uses clock_getres and