diff options
| -rw-r--r-- | mm/page_alloc.c | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index ae721a713bda..c42ec374df96 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3085,7 +3085,6 @@ out: return page; } - /* * Maximum number of compaction retries wit a progress before OOM * killer is consider as the only way to move forward. @@ -3373,11 +3372,6 @@ bool gfp_pfmemalloc_allowed(gfp_t gfp_mask) return false; } -static inline bool is_thp_gfp_mask(gfp_t gfp_mask) -{ - return (gfp_mask & (GFP_TRANSHUGE | __GFP_KSWAPD_RECLAIM)) == GFP_TRANSHUGE; -} - /* * Maximum number of reclaim retries without any progress before OOM killer * is consider as the only way to move forward. @@ -3536,8 +3530,11 @@ __alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order, if (page) goto got_pg; - /* Checks for THP-specific high-order allocations */ - if (is_thp_gfp_mask(gfp_mask)) { + /* + * Checks for costly allocations with __GFP_NORETRY, which + * includes THP page fault allocations + */ + if (gfp_mask & __GFP_NORETRY) { /* * If compaction is deferred for high-order allocations, * it is because sync compaction recently failed. If @@ -3557,11 +3554,10 @@ __alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order, goto nopage; /* - * It can become very expensive to allocate transparent - * hugepages at fault, so use asynchronous memory - * compaction for THP unless it is khugepaged trying to - * collapse. All other requests should tolerate at - * least light sync migration. + * Looks like reclaim/compaction is worth trying, but + * sync compaction could be very expensive, so keep + * using async compaction, unless it's khugepaged + * trying to collapse. */ if (!(current->flags & PF_KTHREAD)) migration_mode = MIGRATE_ASYNC; |