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-rw-r--r--ChangeLog3
-rw-r--r--manual/llio.texi5
2 files changed, 8 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index 3d7cf67c2f..6f3a85f123 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2014-11-06  Carlos O'Donell  <carlos@redhat.com>
 
+	* manual/llio.texi: Add comment that write safety has been
+	fixed in Linux.
+
 	* elf/Makefile (all-built-dso): Add $(common-objpfx)elf/ld.so.
 	(localplt-build-dso): Add elf/ld.so.
 	* sysdeps/unix/sysv/linux/i386/localplt.data: Add ___tls_get_addr
diff --git a/manual/llio.texi b/manual/llio.texi
index 393ddf30ab..4f3fada1e7 100644
--- a/manual/llio.texi
+++ b/manual/llio.texi
@@ -491,6 +491,11 @@ When the source file is compiled with @code{_FILE_OFFSET_BITS == 64} on a
 @c
 @c So we mark it thread safe, it doesn't blow up, but you might loose
 @c data, and we don't strictly meet the POSIX requirements.
+@c
+@c The fix for file offsets racing was merged in 3.14, the commits were:
+@c 9c225f2655e36a470c4f58dbbc99244c5fc7f2d4, and
+@c d7a15f8d0777955986a2ab00ab181795cab14b01.  Therefore after Linux 3.14 you
+@c should get mostly MT-safe writes.
 The @code{write} function writes up to @var{size} bytes from
 @var{buffer} to the file with descriptor @var{filedes}.  The data in
 @var{buffer} is not necessarily a character string and a null character is