Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 24bcc5e..61f2f6f 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -24,21 +24,21 @@
#define ___GFP_HIGH 0x20u
#define ___GFP_IO 0x40u
#define ___GFP_FS 0x80u
-#define ___GFP_WRITE 0x100u
-#define ___GFP_NOWARN 0x200u
-#define ___GFP_RETRY_MAYFAIL 0x400u
-#define ___GFP_NOFAIL 0x800u
-#define ___GFP_NORETRY 0x1000u
-#define ___GFP_MEMALLOC 0x2000u
-#define ___GFP_COMP 0x4000u
-#define ___GFP_ZERO 0x8000u
-#define ___GFP_NOMEMALLOC 0x10000u
-#define ___GFP_HARDWALL 0x20000u
-#define ___GFP_THISNODE 0x40000u
-#define ___GFP_ATOMIC 0x80000u
-#define ___GFP_ACCOUNT 0x100000u
-#define ___GFP_DIRECT_RECLAIM 0x200000u
-#define ___GFP_KSWAPD_RECLAIM 0x400000u
+#define ___GFP_ZERO 0x100u
+#define ___GFP_ATOMIC 0x200u
+#define ___GFP_DIRECT_RECLAIM 0x400u
+#define ___GFP_KSWAPD_RECLAIM 0x800u
+#define ___GFP_WRITE 0x1000u
+#define ___GFP_NOWARN 0x2000u
+#define ___GFP_RETRY_MAYFAIL 0x4000u
+#define ___GFP_NOFAIL 0x8000u
+#define ___GFP_NORETRY 0x10000u
+#define ___GFP_MEMALLOC 0x20000u
+#define ___GFP_COMP 0x40000u
+#define ___GFP_NOMEMALLOC 0x80000u
+#define ___GFP_HARDWALL 0x100000u
+#define ___GFP_THISNODE 0x200000u
+#define ___GFP_ACCOUNT 0x400000u
#ifdef CONFIG_LOCKDEP
#define ___GFP_NOLOCKDEP 0x800000u
#else
@@ -81,7 +81,7 @@
*
* %__GFP_HARDWALL enforces the cpuset memory allocation policy.
*
- * %__GFP_THISNODE forces the allocation to be satisified from the requested
+ * %__GFP_THISNODE forces the allocation to be satisfied from the requested
* node with no fallbacks or placement policy enforcements.
*
* %__GFP_ACCOUNT causes the allocation to be accounted to kmemcg.
@@ -325,6 +325,29 @@
return !!(gfp_flags & __GFP_DIRECT_RECLAIM);
}
+/**
+ * gfpflags_normal_context - is gfp_flags a normal sleepable context?
+ * @gfp_flags: gfp_flags to test
+ *
+ * Test whether @gfp_flags indicates that the allocation is from the
+ * %current context and allowed to sleep.
+ *
+ * An allocation being allowed to block doesn't mean it owns the %current
+ * context. When direct reclaim path tries to allocate memory, the
+ * allocation context is nested inside whatever %current was doing at the
+ * time of the original allocation. The nested allocation may be allowed
+ * to block but modifying anything %current owns can corrupt the outer
+ * context's expectations.
+ *
+ * %true result from this function indicates that the allocation context
+ * can sleep and use anything that's associated with %current.
+ */
+static inline bool gfpflags_normal_context(const gfp_t gfp_flags)
+{
+ return (gfp_flags & (__GFP_DIRECT_RECLAIM | __GFP_MEMALLOC)) ==
+ __GFP_DIRECT_RECLAIM;
+}
+
#ifdef CONFIG_HIGHMEM
#define OPT_ZONE_HIGHMEM ZONE_HIGHMEM
#else
@@ -511,14 +534,14 @@
extern struct page *alloc_pages_vma(gfp_t gfp_mask, int order,
struct vm_area_struct *vma, unsigned long addr,
int node, bool hugepage);
-#define alloc_hugepage_vma(gfp_mask, vma, addr, order) \
+#define alloc_hugepage_vma(gfp_mask, vma, addr, order) \
alloc_pages_vma(gfp_mask, order, vma, addr, numa_node_id(), true)
#else
#define alloc_pages(gfp_mask, order) \
alloc_pages_node(numa_node_id(), gfp_mask, order)
#define alloc_pages_vma(gfp_mask, order, vma, addr, node, false)\
alloc_pages(gfp_mask, order)
-#define alloc_hugepage_vma(gfp_mask, vma, addr, order) \
+#define alloc_hugepage_vma(gfp_mask, vma, addr, order) \
alloc_pages(gfp_mask, order)
#endif
#define alloc_page(gfp_mask) alloc_pages(gfp_mask, 0)
@@ -585,12 +608,12 @@
}
#endif /* CONFIG_PM_SLEEP */
-#if (defined(CONFIG_MEMORY_ISOLATION) && defined(CONFIG_COMPACTION)) || defined(CONFIG_CMA)
+#ifdef CONFIG_CONTIG_ALLOC
/* The below functions must be run on a range from a single zone. */
extern int alloc_contig_range(unsigned long start, unsigned long end,
unsigned migratetype, gfp_t gfp_mask);
-extern void free_contig_range(unsigned long pfn, unsigned nr_pages);
#endif
+void free_contig_range(unsigned long pfn, unsigned int nr_pages);
#ifdef CONFIG_CMA
/* CMA stuff */