+ csky-mm-fix-build-errors-cause-by-folio-flags-changes.patch added to mm-hotfixes-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: csky/mm: fix build errors cause by folio flags changes
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     csky-mm-fix-build-errors-cause-by-folio-flags-changes.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/csky-mm-fix-build-errors-cause-by-folio-flags-changes.patch

This patch will later appear in the mm-hotfixes-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: "Mike Rapoport (Microsoft)" <rppt@kernel.org>
Subject: csky/mm: fix build errors cause by folio flags changes
Date: Wed, 15 Oct 2025 09:47:59 +0300

Kernel compilation on csky fails because csky was not updated during
conversion of folio flags to memdesc_flags_t:

arch/csky/abiv2/inc/abi/cacheflush.h: In function 'flush_dcache_folio':
arch/csky/abiv2/inc/abi/cacheflush.h:23:39: error: passing argument 2 of 'const_test_bit' from incompatible pointer type [-Werror=incompatible-pointer-types]
   23 |         if (test_bit(PG_dcache_clean, &folio->flags))
      |                                       ^~~~~~~~~~~~~
      |                                       |
      |                                       memdesc_flags_t *
include/linux/bitops.h:47:24: note: in definition of macro 'bitop'
   47 |          const##op(nr, addr) : op(nr, addr))
      |                        ^~~~
arch/csky/abiv2/inc/abi/cacheflush.h:23:13: note: in expansion of macro 'test_bit'
   23 |         if (test_bit(PG_dcache_clean, &folio->flags))
      |             ^~~~~~~~

Update references of folio->flags in arch/csky.

Link: https://lkml.kernel.org/r/20251015064759.2993842-1-rppt@kernel.org
Fixes: 53fbef56e07d ("mm: introduce memdesc_flags_t")
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Guo Ren <guoren@kernel.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/csky/abiv2/cacheflush.c         |    2 +-
 arch/csky/abiv2/inc/abi/cacheflush.h |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

--- a/arch/csky/abiv2/cacheflush.c~csky-mm-fix-build-errors-cause-by-folio-flags-changes
+++ a/arch/csky/abiv2/cacheflush.c
@@ -21,7 +21,7 @@ void update_mmu_cache_range(struct vm_fa
 
 	folio = page_folio(pfn_to_page(pfn));
 
-	if (test_and_set_bit(PG_dcache_clean, &folio->flags))
+	if (test_and_set_bit(PG_dcache_clean, &folio->flags.f))
 		return;
 
 	icache_inv_range(address, address + nr*PAGE_SIZE);
--- a/arch/csky/abiv2/inc/abi/cacheflush.h~csky-mm-fix-build-errors-cause-by-folio-flags-changes
+++ a/arch/csky/abiv2/inc/abi/cacheflush.h
@@ -20,8 +20,8 @@
 
 static inline void flush_dcache_folio(struct folio *folio)
 {
-	if (test_bit(PG_dcache_clean, &folio->flags))
-		clear_bit(PG_dcache_clean, &folio->flags);
+	if (test_bit(PG_dcache_clean, &folio->flags.f))
+		clear_bit(PG_dcache_clean, &folio->flags.f);
 }
 #define flush_dcache_folio flush_dcache_folio
 
_

Patches currently in -mm which might be from rppt@kernel.org are

csky-mm-fix-build-errors-cause-by-folio-flags-changes.patch
kho-drop-notifiers.patch