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Commit 52bf376c authored by John Heffner's avatar John Heffner Committed by David S. Miller
Browse files

[TCP]: Fix up sysctl_tcp_mem initialization. 



Fix up tcp_mem initial settings to take into account the size of the
hash entries (different on SMP and non-SMP systems).

Signed-off-by: default avatarJohn Heffner <jheffner@psc.edu>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 337dde79

net/ipv4/tcp.c

+4 −3
Original line number Diff line number Diff line
@@ -2316,9 +2316,10 @@ void __init tcp_init(void) 
		sysctl_max_syn_backlog = 128;

	}



	sysctl_tcp_mem[0] =  768 << order;

	sysctl_tcp_mem[1] = 1024 << order;

	sysctl_tcp_mem[2] = 1536 << order;

	/* Allow no more than 3/4 kernel memory (usually less) allocated to TCP */

	sysctl_tcp_mem[0] = (1536 / sizeof (struct inet_bind_hashbucket)) << order;

	sysctl_tcp_mem[1] = sysctl_tcp_mem[0] * 4 / 3;

	sysctl_tcp_mem[2] = sysctl_tcp_mem[0] * 2;



	limit = ((unsigned long)sysctl_tcp_mem[1]) << (PAGE_SHIFT - 7);

	max_share = min(4UL*1024*1024, limit);