From 70fdcbc20ad7e2c980284cabb66e9363babc61da Mon Sep 17 00:00:00 2001 From: Michael Kerrisk Date: Sat, 17 Dec 2016 10:31:40 +0100 Subject: [PATCH] unix.7: Note that the ETOOMANYREFS diagnostic may be backported to older kernels Reported-by: Willy Tarreau Signed-off-by: Michael Kerrisk --- man7/unix.7 | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/man7/unix.7 b/man7/unix.7 index 3f41ad4cc..d04adb4f9 100644 --- a/man7/unix.7 +++ b/man7/unix.7 @@ -552,7 +552,8 @@ An in-flight file descriptor is one that has been sent using but has not yet been accepted in the recipient process using .BR recvmsg (2). -This error is diagnosed since Linux 4.5. +This error is diagnosed since mainline Linux 4.5 +(and in some earlier kernel versions where the fix has been backported). .\" commit 712f4aad406bb1ed67f3f98d04c044191f0ff593 In earlier kernel versions, it was possible to place an unlimited number of file descriptors in flight,