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Subject[PATCH 4.15 060/122] doc: Change the min default value of tcp_wmem/tcp_rmem.
Date
4.15-stable review patch.  If anyone has any objections, please let me know.

------------------

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.

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