diff options
| -rw-r--r-- | mm/page_alloc.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 41253539b32a..75cd8d74a1a5 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -127,6 +127,20 @@ void pm_restrict_gfp_mask(void) saved_gfp_mask = gfp_allowed_mask; gfp_allowed_mask &= ~GFP_IOFS; } + +static bool pm_suspending(void) +{ + if ((gfp_allowed_mask & GFP_IOFS) == GFP_IOFS) + return false; + return true; +} + +#else + +static bool pm_suspending(void) +{ + return false; +} #endif /* CONFIG_PM_SLEEP */ #ifdef CONFIG_HUGETLB_PAGE_SIZE_VARIABLE @@ -2208,6 +2222,14 @@ rebalance: goto restart; } + + /* + * Suspend converts GFP_KERNEL to __GFP_WAIT which can + * prevent reclaim making forward progress without + * invoking OOM. Bail if we are suspending + */ + if (pm_suspending()) + goto nopage; } /* Check if we should retry the allocation */ |