From f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 01:04:47 +0000
Subject: [PATCH] add driver 5G
---
kernel/include/linux/pfn_t.h | 13 ++++---------
1 files changed, 4 insertions(+), 9 deletions(-)
diff --git a/kernel/include/linux/pfn_t.h b/kernel/include/linux/pfn_t.h
index 673546b..2d91482 100644
--- a/kernel/include/linux/pfn_t.h
+++ b/kernel/include/linux/pfn_t.h
@@ -9,6 +9,8 @@
* PFN_SG_LAST - pfn references a page and is the last scatterlist entry
* PFN_DEV - pfn is not covered by system memmap by default
* PFN_MAP - pfn has a dynamic page mapping established by a device driver
+ * PFN_SPECIAL - for CONFIG_FS_DAX_LIMITED builds to allow XIP, but not
+ * get_user_pages
*/
#define PFN_FLAGS_MASK (((u64) (~PAGE_MASK)) << (BITS_PER_LONG_LONG - PAGE_SHIFT))
#define PFN_SG_CHAIN (1ULL << (BITS_PER_LONG_LONG - 1))
@@ -64,13 +66,6 @@
return PFN_PHYS(pfn_t_to_pfn(pfn));
}
-static inline void *pfn_t_to_virt(pfn_t pfn)
-{
- if (pfn_t_has_page(pfn))
- return __va(pfn_t_to_phys(pfn));
- return NULL;
-}
-
static inline pfn_t page_to_pfn_t(struct page *page)
{
return pfn_to_pfn_t(page_to_pfn(page));
@@ -102,7 +97,7 @@
#endif
#endif
-#ifdef __HAVE_ARCH_PTE_DEVMAP
+#ifdef CONFIG_ARCH_HAS_PTE_DEVMAP
static inline bool pfn_t_devmap(pfn_t pfn)
{
const u64 flags = PFN_DEV|PFN_MAP;
@@ -120,7 +115,7 @@
defined(CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD)
pud_t pud_mkdevmap(pud_t pud);
#endif
-#endif /* __HAVE_ARCH_PTE_DEVMAP */
+#endif /* CONFIG_ARCH_HAS_PTE_DEVMAP */
#ifdef CONFIG_ARCH_HAS_PTE_SPECIAL
static inline bool pfn_t_special(pfn_t pfn)
--
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