diff options
| author | Laura Abbott <lauraa@codeaurora.org> | 2013-08-22 13:46:07 -0700 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2019-05-02 21:02:56 +0200 |
| commit | 55118233f47e9284f72a19bf89396914c9585877 (patch) | |
| tree | 2ad5eb281f9a56d64bb4c3fe8b8f4b81888e3237 /include | |
| parent | 0deaaafa5e17afebd21198beaa1b053211685488 (diff) | |
mm: Update is_vmalloc_addr to account for vmalloc savings
is_vmalloc_addr current assumes that all vmalloc addresses
exist between VMALLOC_START and VMALLOC_END. This may not be
the case when interleaving vmalloc and lowmem. Update the
is_vmalloc_addr to properly check for this.
Change-Id: I5def3d6ae1a4de59ea36f095b8c73649a37b1f36
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mm.h | 12 | ||||
| -rw-r--r-- | include/linux/vmalloc.h | 1 |
2 files changed, 7 insertions, 6 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 8aecdef77..7060750a8 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -325,16 +325,16 @@ unsigned long vmalloc_to_pfn(const void *addr); * On nommu, vmalloc/vfree wrap through kmalloc/kfree directly, so there * is no special casing required. */ -static inline int is_vmalloc_addr(const void *x) -{ -#ifdef CONFIG_MMU - unsigned long addr = (unsigned long)x; - return addr >= VMALLOC_START && addr < VMALLOC_END; +#ifdef CONFIG_MMU +extern int is_vmalloc_addr(const void *x); #else +static inline int is_vmalloc_addr(const void *x) +{ return 0; -#endif } +#endif + #ifdef CONFIG_MMU extern int is_vmalloc_or_module_addr(const void *x); #else diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index 8549594c7..c87676e71 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -16,6 +16,7 @@ struct vm_area_struct; /* vma defining user mapping in mm_types.h */ #define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */ #define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */ #define VM_UNLIST 0x00000020 /* vm_struct is not listed in vmlist */ +#define VM_LOWMEM 0x00000040 /* Tracking of direct mapped lowmem */ /* bits [20..32] reserved for arch specific ioremap internals */ /* |