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Diffstat (limited to 'mm/page_alloc.c')
-rw-r--r--mm/page_alloc.c22
1 files changed, 10 insertions, 12 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 38e5be65f24e..8f65abeb9ad6 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1513,7 +1513,6 @@ failed:
#define ALLOC_HARDER 0x10 /* try to alloc harder */
#define ALLOC_HIGH 0x20 /* __GFP_HIGH set */
#define ALLOC_CPUSET 0x40 /* check for correct cpuset */
-#define ALLOC_PFMEMALLOC 0x80 /* Caller has PF_MEMALLOC set */
#ifdef CONFIG_FAIL_PAGE_ALLOC
@@ -2294,11 +2293,10 @@ gfp_to_alloc_flags(gfp_t gfp_mask)
} else if (unlikely(rt_task(current)) && !in_interrupt())
alloc_flags |= ALLOC_HARDER;
- if ((current->flags & PF_MEMALLOC) ||
- unlikely(test_thread_flag(TIF_MEMDIE))) {
- alloc_flags |= ALLOC_PFMEMALLOC;
-
- if (likely(!(gfp_mask & __GFP_NOMEMALLOC)) && !in_interrupt())
+ if (likely(!(gfp_mask & __GFP_NOMEMALLOC))) {
+ if (gfp_mask & __GFP_MEMALLOC)
+ alloc_flags |= ALLOC_NO_WATERMARKS;
+ else if (likely(!(gfp_mask & __GFP_NOMEMALLOC)) && !in_interrupt())
alloc_flags |= ALLOC_NO_WATERMARKS;
}
@@ -2307,7 +2305,7 @@ gfp_to_alloc_flags(gfp_t gfp_mask)
bool gfp_pfmemalloc_allowed(gfp_t gfp_mask)
{
- return !!(gfp_to_alloc_flags(gfp_mask) & ALLOC_PFMEMALLOC);
+ return !!(gfp_to_alloc_flags(gfp_mask) & ALLOC_NO_WATERMARKS);
}
static inline struct page *
@@ -2498,12 +2496,12 @@ nopage:
return page;
got_pg:
/*
- * page->pfmemalloc is set when the caller had PFMEMALLOC set or is
- * been OOM killed. The expectation is that the caller is taking
- * steps that will free more memory. The caller should avoid the
- * page being used for !PFMEMALLOC purposes.
+ * page->pfmemalloc is set when the caller had PFMEMALLOC set, is
+ * been OOM killed or specified __GFP_MEMALLOC. The expectation is
+ * that the caller is taking steps that will free more memory. The
+ * caller should avoid the page being used for !PFMEMALLOC purposes.
*/
- page->pfmemalloc = !!(alloc_flags & ALLOC_PFMEMALLOC);
+ page->pfmemalloc = !!(alloc_flags & ALLOC_NO_WATERMARKS);
if (kmemcheck_enabled)
kmemcheck_pagealloc_alloc(page, order, gfp_mask);