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| author | Mel Gorman <mgorman@suse.de> | 2012-11-27 11:31:44 +0100 |
|---|---|---|
| committer | Mel Gorman <mgorman@suse.de> | 2012-12-11 15:42:58 +0100 |
| commit | 7548341b28956ccd35a63ab12f01d8541041aa70 (patch) | |
| tree | efa2a33587ac785c6462fee04146c52258740e66 /mm | |
| parent | mm: numa: Add THP migration for the NUMA working set scanning fault case buil... (diff) | |
| download | linux-7548341b28956ccd35a63ab12f01d8541041aa70.tar.xz linux-7548341b28956ccd35a63ab12f01d8541041aa70.zip | |
mm: numa: Account for failed allocations and isolations as migration failures
Subject says it all. Allocation failures and a failure to isolate should
be accounted as a migration failure. This is partially another
difference between base page and transhuge page migration. A base page
migration makes multiple attempts for these conditions before it would
be accounted for as a failure.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/migrate.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index 9341a501d168..26537c4f3094 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1635,12 +1635,15 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm, new_page = alloc_pages_node(node, (GFP_TRANSHUGE | GFP_THISNODE) & ~__GFP_WAIT, HPAGE_PMD_ORDER); - if (!new_page) + if (!new_page) { + count_vm_events(PGMIGRATE_FAIL, HPAGE_PMD_NR); goto out_dropref; + } page_xchg_last_nid(new_page, page_last_nid(page)); isolated = numamigrate_isolate_page(pgdat, page); if (!isolated) { + count_vm_events(PGMIGRATE_FAIL, HPAGE_PMD_NR); put_page(new_page); goto out_keep_locked; } |