[185/227] mm/early_ioremap: declare early_memremap_pgprot_adjust()

Commit Message

Andrew Morton March 22, 2022, 9:47 p.m. UTC

From: Vlastimil Babka <[e-mail]>
Subject: mm/early_ioremap: declare early_memremap_pgprot_adjust()

The mm/ directory can almost fully be built with W=1, which would help in
local development.  One remaining issue is missing prototype for
early_memremap_pgprot_adjust().

Thus add a declaration for this function.  Use mm/internal.h instead of
asm/early_ioremap.h to avoid missing type definitions and unnecessary
exposure.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Vlastimil Babka <[e-mail]>
Cc: Mel Gorman <[e-mail]>
Cc: Matthew Wilcox <[e-mail]>
Cc: David Hildenbrand <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 mm/early_ioremap.c |    1 +
 mm/internal.h      |    6 ++++++
 2 files changed, 7 insertions(+)

Patch

--- a/mm/early_ioremap.c~mm-early_ioremap-declare-early_memremap_pgprot_adjust
+++ a/mm/early_ioremap.c
@@ -17,6 +17,7 @@ 
 #include <linux/vmalloc.h>
 #include <asm/fixmap.h>
 #include <asm/early_ioremap.h>
+#include "internal.h"
 
 #ifdef CONFIG_MMU
 static int early_ioremap_debug __initdata;
--- a/mm/internal.h~mm-early_ioremap-declare-early_memremap_pgprot_adjust
+++ a/mm/internal.h
@@ -155,6 +155,12 @@  extern unsigned long highest_memmap_pfn;
 #define MAX_RECLAIM_RETRIES 16
 
 /*
+ * in mm/early_ioremap.c
+ */
+pgprot_t __init early_memremap_pgprot_adjust(resource_size_t phys_addr,
+					unsigned long size, pgprot_t prot);
+
+/*
  * in mm/vmscan.c:
  */
 extern int isolate_lru_page(struct page *page);