mm: reduce noise in show_mem for lowmem allocations

While discussing early DMA pool pre-allocation failure with Christoph [1]
I have realized that the allocation failure warning is rather noisy for
constrained allocations like GFP_DMA{32}.  Those zones are usually not
populated on all nodes very often as their memory ranges are constrained.

This is an attempt to reduce the ballast that doesn't provide any relevant
information for those allocation failures investigation.  Please note that
I have only compile tested it (in my default config setup) and I am
throwing it mostly to see what people think about it.

[1] http://lkml.kernel.org/r/[email protected]

[[email protected]: update]
  Link: https://lkml.kernel.org/r/[email protected]
[[email protected]: fix build]
[[email protected]: fix it for mapletree]
[[email protected]: update it for Michal's update]
[[email protected]: fix arch/powerpc/xmon/xmon.c]
  Link: https://lkml.kernel.org/r/[email protected]
[[email protected]: fix arch/sparc/kernel/setup_32.c]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Michal Hocko <[email protected]>
Acked-by: Johannes Weiner <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Dan Carpenter <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions