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net: avoid limits overflow

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Robin Holt tried to boot a 16TB machine and found some limits were
reached : sysctl_tcp_mem[2], sysctl_udp_mem[2]

We can switch infrastructure to use long "instead" of "int", now
atomic_long_t primitives are available for free.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Reported-by: Robin Holt <holt@sgi.com>
Reviewed-by: Robin Holt <holt@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2010-11-09 23:24:26 +00:00
committed by David S. Miller
parent 67286640f6
commit 8d987e5c75
15 changed files with 40 additions and 38 deletions
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include/net/udp.h
+2 -2
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@@ -105,10 +105,10 @@ static inline struct udp_hslot *udp_hashslot2(struct udp_table *table,
extern struct proto udp_prot;
extern atomic_t udp_memory_allocated;
extern atomic_long_t udp_memory_allocated;
/* sysctl variables for udp */
extern int sysctl_udp_mem[3];
extern long sysctl_udp_mem[3];
extern int sysctl_udp_rmem_min;
extern int sysctl_udp_wmem_min;