Re: [RFC PATCH v2, part4 37/39] mm: use totalram_pages instead of num_physpages at runtime

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Hello.

On 24-03-2013 11:25, Jiang Liu wrote:

The global variable num_physpages is scheduled to be removed, so use
totalram_pages instead of num_physpages at runtime.

Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxx>
Cc: Miklos Szeredi <miklos@xxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Alexey Kuznetsov <kuznet@xxxxxxxxxxxxx>
Cc: James Morris <jmorris@xxxxxxxxx>
Cc: Hideaki YOSHIFUJI <yoshfuji@xxxxxxxxxxxxxx>
Cc: Patrick McHardy <kaber@xxxxxxxxx>
Cc: fuse-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: netdev@xxxxxxxxxxxxxxx
---
  fs/fuse/inode.c          |    2 +-
  kernel/power/snapshot.c  |    4 ++--
  net/ipv4/inet_fragment.c |    2 +-
  3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index b730fda..4c2a420 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -781,7 +781,7 @@ static const struct super_operations fuse_super_operations = {
  static void sanitize_global_limit(unsigned *limit)
  {
  	if (*limit == 0)
-		*limit = ((num_physpages << PAGE_SHIFT) >> 13) /
+		*limit = ((totalram_pages << PAGE_SHIFT) >> 13) /
  			 sizeof(struct fuse_req);

  	if (*limit >= 1 << 16)
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 0de2857..8b5d1cd 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1651,7 +1651,7 @@ unsigned long snapshot_get_image_size(void)
  static int init_header(struct swsusp_info *info)
  {
  	memset(info, 0, sizeof(struct swsusp_info));
-	info->num_physpages = num_physpages;
+	info->num_physpages = get_num_physpages();
  	info->image_pages = nr_copy_pages;
  	info->pages = snapshot_get_image_size();
  	info->size = info->pages;
@@ -1795,7 +1795,7 @@ static int check_header(struct swsusp_info *info)
  	char *reason;

  	reason = check_image_kernel(info);
-	if (!reason && info->num_physpages != num_physpages)
+	if (!reason && info->num_physpages != get_num_physpages())
  		reason = "memory size";
  	if (reason) {
  		printk(KERN_ERR "PM: Image mismatch: %s\n", reason);
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index 4750d2b..94a99a1 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -60,7 +60,7 @@ void inet_frags_init(struct inet_frags *f)

  	rwlock_init(&f->lock);

-	f->rnd = (u32) ((num_physpages ^ (num_physpages>>7)) ^
+	f->rnd = (u32) ((totalram_pages ^ (totalram_pages>>7)) ^
  				   (jiffies ^ (jiffies >> 6)));

  	setup_timer(&f->secret_timer, inet_frag_secret_rebuild,

   Isn't patch 37 the same as patch 9?

WBR, Sergei

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