[PATCH 36/39] mm: eliminate VM_SPECIAL, VMA_SPECIAL_FLAGS

["Lorenzo Stoakes (ARM)" <ljs@kernel.org>]

Every user of the VM_SPECIAL or VMA_SPECIAL_FLAGS has now been converted to
predicates which explicitly express what is actually being checked for
rather than the nebulous concept of possessing 'special' VMA flags.

In any case 'special' is not so special a term of art in mm - it includes
VDSO/VVAR mappings, special in the sense of vm_normal_folio() and probably
other cases too.

Therefore make things less special by eliminating these now unused flags.

No functional change intended.

Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
---
 include/linux/mm.h              | 8 --------
 tools/testing/vma/include/dup.h | 8 --------
 2 files changed, 16 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index e6c3ebb09c8d..b5784685272a 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -576,14 +576,6 @@ enum {
 #define VM_ACCESS_FLAGS (VM_READ | VM_WRITE | VM_EXEC)
 #define VMA_ACCESS_FLAGS mk_vma_flags(VMA_READ_BIT, VMA_WRITE_BIT, VMA_EXEC_BIT)
 
-/*
- * Special vmas that are non-mergable, non-mlock()able.
- */
-
-#define VMA_SPECIAL_FLAGS mk_vma_flags(VMA_IO_BIT, VMA_DONTEXPAND_BIT, \
-				       VMA_PFNMAP_BIT, VMA_MIXEDMAP_BIT)
-#define VM_SPECIAL vma_flags_to_legacy(VMA_SPECIAL_FLAGS)
-
 /*
  * Physically remapped pages are special. Tell the
  * rest of the world about it:
diff --git a/tools/testing/vma/include/dup.h b/tools/testing/vma/include/dup.h
index e6cb2ea196f2..61b08589e592 100644
--- a/tools/testing/vma/include/dup.h
+++ b/tools/testing/vma/include/dup.h
@@ -352,14 +352,6 @@ enum {
 #define VM_ACCESS_FLAGS (VM_READ | VM_WRITE | VM_EXEC)
 #define VMA_ACCESS_FLAGS mk_vma_flags(VMA_READ_BIT, VMA_WRITE_BIT, VMA_EXEC_BIT)
 
-/*
- * Special vmas that are non-mergable, non-mlock()able.
- */
-#define VM_SPECIAL (VM_IO | VM_DONTEXPAND | VM_PFNMAP | VM_MIXEDMAP)
-
-#define VMA_SPECIAL_FLAGS mk_vma_flags(VMA_IO_BIT, VMA_DONTEXPAND_BIT, \
-				       VMA_PFNMAP_BIT, VMA_MIXEDMAP_BIT)
-
 #define VMA_REMAP_FLAGS mk_vma_flags(VMA_IO_BIT, VMA_PFNMAP_BIT,	\
 				     VMA_DONTEXPAND_BIT, VMA_DONTDUMP_BIT)
 

-- 
2.55.0