Tim Bird 31fe62b958 mm: add a low limit to alloc_large_system_hash
UDP stack needs a minimum hash size value for proper operation and also
uses alloc_large_system_hash() for proper NUMA distribution of its hash
tables and automatic sizing depending on available system memory.

On some low memory situations, udp_table_init() must ignore the
alloc_large_system_hash() result and reallocs a bigger memory area.

As we cannot easily free old hash table, we leak it and kmemleak can
issue a warning.

This patch adds a low limit parameter to alloc_large_system_hash() to
solve this problem.

We then specify UDP_HTABLE_SIZE_MIN for UDP/UDPLite hash table
allocation.

Reported-by: Mark Asselstine <mark.asselstine@windriver.com>
Reported-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-24 00:28:21 -04:00
..
2012-04-04 17:26:08 -07:00
2011-07-26 16:49:45 -07:00
2011-09-23 12:05:29 +05:30
2012-03-28 18:30:03 +01:00
2012-04-26 12:06:09 +02:00
2012-03-26 12:50:53 +10:30
2012-03-29 19:52:46 +08:00
2012-03-23 16:58:41 -07:00
2012-03-28 18:30:03 +01:00
2012-05-08 12:35:06 +02:00
2011-10-31 17:30:44 -07:00
2011-09-19 17:04:37 -07:00
2012-03-15 18:17:55 -07:00