mm: replace various uses of num_physpages by totalram_pages
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 <jbeulich@novell.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Dave Airlie <airlied@linux.ie>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/net/core/sock.c b/net/core/sock.c
index 30d5446..524712a 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1206,12 +1206,12 @@
void __init sk_init(void)
{
- if (num_physpages <= 4096) {
+ if (totalram_pages <= 4096) {
sysctl_wmem_max = 32767;
sysctl_rmem_max = 32767;
sysctl_wmem_default = 32767;
sysctl_rmem_default = 32767;
- } else if (num_physpages >= 131072) {
+ } else if (totalram_pages >= 131072) {
sysctl_wmem_max = 131071;
sysctl_rmem_max = 131071;
}
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index 923db06..bc44670 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -1049,10 +1049,10 @@
*
* The methodology is similar to that of the buffer cache.
*/
- if (num_physpages >= (128 * 1024))
- goal = num_physpages >> (21 - PAGE_SHIFT);
+ if (totalram_pages >= (128 * 1024))
+ goal = totalram_pages >> (21 - PAGE_SHIFT);
else
- goal = num_physpages >> (23 - PAGE_SHIFT);
+ goal = totalram_pages >> (23 - PAGE_SHIFT);
if (thash_entries)
goal = (thash_entries *
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 9383d3e..57662ca 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -1750,7 +1750,7 @@
dn_route_timer.expires = jiffies + decnet_dst_gc_interval * HZ;
add_timer(&dn_route_timer);
- goal = num_physpages >> (26 - PAGE_SHIFT);
+ goal = totalram_pages >> (26 - PAGE_SHIFT);
for(order = 0; (1UL << order) < goal; order++)
/* NOTHING */;
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 91867d3..df93473 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -3414,7 +3414,7 @@
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,
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 19a0612..21387eb 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2862,7 +2862,7 @@
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 @@
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,
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index b371098..7c9ec3d 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -1245,9 +1245,9 @@
* machine has 512 buckets. >= 1GB machines have 16384 buckets. */
if (!nf_conntrack_htable_size) {
nf_conntrack_htable_size
- = (((num_physpages << PAGE_SHIFT) / 16384)
+ = (((totalram_pages << PAGE_SHIFT) / 16384)
/ sizeof(struct hlist_head));
- if (num_physpages > (1024 * 1024 * 1024 / PAGE_SIZE))
+ if (totalram_pages > (1024 * 1024 * 1024 / PAGE_SIZE))
nf_conntrack_htable_size = 16384;
if (nf_conntrack_htable_size < 32)
nf_conntrack_htable_size = 32;
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index a6ac83a..f01955c 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -617,7 +617,7 @@
int cpu;
/* Pedantry: prevent them from hitting BUG() in vmalloc.c --RR */
- if ((SMP_ALIGN(size) >> PAGE_SHIFT) + 2 > num_physpages)
+ if ((SMP_ALIGN(size) >> PAGE_SHIFT) + 2 > totalram_pages)
return NULL;
newinfo = kzalloc(XT_TABLE_INFO_SZ, GFP_KERNEL);
diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
index 219dcdb..dd16e40 100644
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -194,9 +194,9 @@
if (minfo->cfg.size)
size = minfo->cfg.size;
else {
- size = ((num_physpages << PAGE_SHIFT) / 16384) /
+ size = ((totalram_pages << PAGE_SHIFT) / 16384) /
sizeof(struct list_head);
- if (num_physpages > (1024 * 1024 * 1024 / PAGE_SIZE))
+ if (totalram_pages > (1024 * 1024 * 1024 / PAGE_SIZE))
size = 8192;
if (size < 16)
size = 16;
@@ -266,9 +266,9 @@
if (minfo->cfg.size) {
size = minfo->cfg.size;
} else {
- size = (num_physpages << PAGE_SHIFT) / 16384 /
+ size = (totalram_pages << PAGE_SHIFT) / 16384 /
sizeof(struct list_head);
- if (num_physpages > 1024 * 1024 * 1024 / PAGE_SIZE)
+ if (totalram_pages > 1024 * 1024 * 1024 / PAGE_SIZE)
size = 8192;
if (size < 16)
size = 16;
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index c5aab6a..55180b9 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2091,10 +2091,10 @@
if (!nl_table)
goto panic;
- if (num_physpages >= (128 * 1024))
- limit = num_physpages >> (21 - PAGE_SHIFT);
+ if (totalram_pages >= (128 * 1024))
+ limit = totalram_pages >> (21 - PAGE_SHIFT);
else
- limit = num_physpages >> (23 - PAGE_SHIFT);
+ limit = totalram_pages >> (23 - PAGE_SHIFT);
order = get_bitmask_order(limit) - 1 + PAGE_SHIFT;
limit = (1UL << order) / sizeof(struct hlist_head);
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index c557f1f..612dc87 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -1184,10 +1184,10 @@
/* Size and allocate the association hash table.
* The methodology is similar to that of the tcp hash tables.
*/
- if (num_physpages >= (128 * 1024))
- goal = num_physpages >> (22 - PAGE_SHIFT);
+ if (totalram_pages >= (128 * 1024))
+ goal = totalram_pages >> (22 - PAGE_SHIFT);
else
- goal = num_physpages >> (24 - PAGE_SHIFT);
+ goal = totalram_pages >> (24 - PAGE_SHIFT);
for (order = 0; (1UL << order) < goal; order++)
;
