Enable use of sendfile

[exim.git] / src / OS / os.h-Linux

diff --git a/src/OS/os.h-Linux b/src/OS/os.h-Linux
index cc1cef99be849c10d487aef94e5a767f02d95b38..3e9303cab8a28a36403b8b0a91c2b8529c87636c 100644 (file)
--- a/src/OS/os.h-Linux
+++ b/src/OS/os.h-Linux
@@ -18,9 +18,10 @@ with the issue. */
 /* When using the DKIM, setting HAVE_LINUX_SENDFILE can increase
 performance on outgoing mail a bit. Note: With older glibc versions
 this setting will conflict with the _FILE_OFFSET_BITS=64 setting
-defined as part of the Linux CFLAGS. */
+defined as part of the Linux CFLAGS.  As of 2017 those are declared
+to be too old to build by default. */
 
-/* #define HAVE_LINUX_SENDFILE */
+#define HAVE_LINUX_SENDFILE
 
 #define F_FREESP     O_TRUNC
 typedef struct flock flock_t;