arch, mm: filter disallowed nodes from arch specific show_mem functions

Architectures that implement their own show_mem() function did not pass
the filter argument to show_free_areas() to appropriately avoid emitting
the state of nodes that are disallowed in the current context.  This patch
now passes the filter argument to show_free_areas() so those nodes are now
avoided.

This patch also removes the show_free_areas() wrapper around
__show_free_areas() and converts existing callers to pass an empty filter.

ia64 emits additional information for each node, so skip_free_areas_zone()
must be made global to filter disallowed nodes and it is converted to use
a nid argument rather than a zone for this use case.

Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Helge Deller <deller@gmx.de>
Cc: James Bottomley <jejb@parisc-linux.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/mm/nommu.c b/mm/nommu.c
index c4c542c..5afce48 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1235,7 +1235,7 @@ error_free:
 enomem:
 	printk("Allocation of length %lu from process %d (%s) failed\n",
 	       len, current->pid, current->comm);
-	show_free_areas();
+	show_free_areas(0);
 	return -ENOMEM;
 }
 
@@ -1468,14 +1468,14 @@ error_getting_vma:
 	printk(KERN_WARNING "Allocation of vma for %lu byte allocation"
 	       " from process %d failed\n",
 	       len, current->pid);
-	show_free_areas();
+	show_free_areas(0);
 	return -ENOMEM;
 
 error_getting_region:
 	printk(KERN_WARNING "Allocation of vm region for %lu byte allocation"
 	       " from process %d failed\n",
 	       len, current->pid);
-	show_free_areas();
+	show_free_areas(0);
 	return -ENOMEM;
 }
 EXPORT_SYMBOL(do_mmap_pgoff);