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tcp: use alloc_large_system_hash() to allocate table_perturb

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[ Upstream commit e67b72b90b ]

In our server, there may be no high order (>= 6) memory since we reserve
lots of HugeTLB pages when booting.  Then the system panic.  So use
alloc_large_system_hash() to allocate table_perturb.

Fixes: e926147618 ("tcp: dynamically allocate the perturb table used by source ports")
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20220607070214.94443-1-songmuchun@bytedance.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Muchun Song 2022-06-07 15:02:14 +08:00 committed by Greg Kroah-Hartman
parent 9b18f01a51
commit 9c1fb2e938
1 changed files with 6 additions and 4 deletions
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10
net/ipv4/inet_hashtables.c
View file

@ -917,10 +917,12 @@ void __init inet_hashinfo2_init(struct inet_hashinfo *h, const char *name,
init_hashinfo_lhash2(h);
/* this one is used for source ports of outgoing connections */
table_perturb = kmalloc_array(INET_TABLE_PERTURB_SIZE,
sizeof(*table_perturb), GFP_KERNEL);
if (!table_perturb)
panic("TCP: failed to alloc table_perturb");
table_perturb = alloc_large_system_hash("Table-perturb",
sizeof(*table_perturb),
INET_TABLE_PERTURB_SIZE,
0, 0, NULL, NULL,
INET_TABLE_PERTURB_SIZE,
INET_TABLE_PERTURB_SIZE);
}
int inet_hashinfo2_init_mod(struct inet_hashinfo *h)