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mm: replace various uses of num_physpages by totalram_pages

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Sizing of memory allocations shouldn't depend on the number of physical
pages found in a system, as that generally includes (perhaps a huge amount
of) non-RAM pages.  The amount of what actually is usable as storage
should instead be used as a basis here.

Some of the calculations (i.e.  those not intending to use high memory)
should likely even use (totalram_pages - totalhigh_pages).

Signed-off-by: Jan Beulich <[email protected]>
Acked-by: Rusty Russell <[email protected]>
Acked-by: Ingo Molnar <[email protected]>
Cc: Dave Airlie <[email protected]>
Cc: Kyle McMartin <[email protected]>
Cc: Jeremy Fitzhardinge <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Patrick McHardy <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Jan Beulich 2009-09-21 17:03:05 -07:00 • committed by Linus Torvalds
commit 4481374ce8
21 changed files with 38 additions and 41 deletions
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2
net/ipv4/route.c
View file

@ -3414,7 +3414,7 @@ int __init ip_rt_init(void)
alloc_large_system_hash("IP route cache",
sizeof(struct rt_hash_bucket),
rhash_entries,
(num_physpages >= 128 * 1024) ?
(totalram_pages >= 128 * 1024) ?
15 : 17,
0,
&rt_hash_log,

4
net/ipv4/tcp.c
View file

@ -2862,7 +2862,7 @@ void __init tcp_init(void)
alloc_large_system_hash("TCP established",
sizeof(struct inet_ehash_bucket),
thash_entries,
(num_physpages >= 128 * 1024) ?
(totalram_pages >= 128 * 1024) ?
13 : 15,
0,
&tcp_hashinfo.ehash_size,
@ -2879,7 +2879,7 @@ void __init tcp_init(void)
alloc_large_system_hash("TCP bind",
sizeof(struct inet_bind_hashbucket),
tcp_hashinfo.ehash_size,
(num_physpages >= 128 * 1024) ?
(totalram_pages >= 128 * 1024) ?
13 : 15,
0,
&tcp_hashinfo.bhash_size,