This is a note to let you know that I've just added the patch titled
doc: Change the min default value of tcp_wmem/tcp_rmem.
to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: doc-change-the-min-default-value-of-tcp_wmem-tcp_rmem.patch and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Tue Mar 6 19:02:56 PST 2018
From: Tonghao Zhang xiangxia.m.yue@gmail.com Date: Sun, 4 Feb 2018 18:07:10 -0800 Subject: doc: Change the min default value of tcp_wmem/tcp_rmem.
From: Tonghao Zhang xiangxia.m.yue@gmail.com
[ Upstream commit a61a86f8db92923a2a4c857c49a795bcae754497 ]
The SK_MEM_QUANTUM was changed from PAGE_SIZE to 4096. And the tcp_wmem/tcp_rmem min default values are 4096.
Fixes: bd68a2a854ad ("net: set SK_MEM_QUANTUM to 4096") Cc: Eric Dumazet edumazet@google.com Signed-off-by: Tonghao Zhang xiangxia.m.yue@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- Documentation/networking/ip-sysctl.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -508,7 +508,7 @@ tcp_rmem - vector of 3 INTEGERs: min, de min: Minimal size of receive buffer used by TCP sockets. It is guaranteed to each TCP socket, even under moderate memory pressure. - Default: 1 page + Default: 4K
default: initial size of receive buffer used by TCP sockets. This value overrides net.core.rmem_default used by other protocols. @@ -666,7 +666,7 @@ tcp_window_scaling - BOOLEAN tcp_wmem - vector of 3 INTEGERs: min, default, max min: Amount of memory reserved for send buffers for TCP sockets. Each TCP socket has rights to use it due to fact of its birth. - Default: 1 page + Default: 4K
default: initial size of send buffer used by TCP sockets. This value overrides net.core.wmem_default used by other protocols.
Patches currently in stable-queue which might be from xiangxia.m.yue@gmail.com are
queue-4.15/doc-change-the-min-default-value-of-tcp_wmem-tcp_rmem.patch