diff options
| author | Mel Gorman <mgorman@suse.de> | 2013-02-22 16:34:27 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-23 17:50:16 -0800 |
| commit | 3abef4e6c23feef4aa9ab161ae138d6d39ae69f3 (patch) | |
| tree | af0648448caa7715fca89ba78c9bca606a1d9e74 /mm/mm_init.c | |
| parent | 34f0315adb58af3b01f59d05b2bce267474e71cb (diff) | |
mm: numa: take THP into account when migrating pages for NUMA balancing
Wanpeng Li pointed out that numamigrate_isolate_page() assumes that only
one base page is being migrated when in fact it can also be checking
THP.
The consequences are that a migration will be attempted when a target
node is nearly full and fail later. It's unlikely to be user-visible
but it should be fixed. While we are there, migrate_balanced_pgdat()
should treat nr_migrate_pages as an unsigned long as it is treated as a
watermark.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Suggested-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Simon Jeons <simon.jeons@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mm_init.c')
0 files changed, 0 insertions, 0 deletions