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| author | Jann Horn <jannh@google.com> | 2019-04-06 03:39:01 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-04-06 04:02:31 +0200 |
| commit | fcae96ff96538f66e7acd5d4e0f2e7516ff8cbd0 (patch) | |
| tree | a3113c1cc5889419069be5e8ec2634c63ce0b7ad /include | |
| parent | lib/lzo: fix bugs for very short or empty input (diff) | |
| download | linux-fcae96ff96538f66e7acd5d4e0f2e7516ff8cbd0.tar.xz linux-fcae96ff96538f66e7acd5d4e0f2e7516ff8cbd0.zip | |
mm: fix vm_fault_t cast in VM_FAULT_GET_HINDEX()
Symmetrically to VM_FAULT_SET_HINDEX(), we need a force-cast in
VM_FAULT_GET_HINDEX() to tell sparse that this is intentional.
Sparse complains about the current code when building a kernel with
CONFIG_MEMORY_FAILURE:
arch/x86/mm/fault.c:1058:53: warning: restricted vm_fault_t degrades to integer
Link: http://lkml.kernel.org/r/20190327204117.35215-1-jannh@google.com
Fixes: 3d3539018d2c ("mm: create the new vm_fault_t type")
Signed-off-by: Jann Horn <jannh@google.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mm_types.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 7eade9132f02..4ef4bbe78a1d 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -671,7 +671,7 @@ enum vm_fault_reason { /* Encode hstate index for a hwpoisoned large page */ #define VM_FAULT_SET_HINDEX(x) ((__force vm_fault_t)((x) << 16)) -#define VM_FAULT_GET_HINDEX(x) (((x) >> 16) & 0xf) +#define VM_FAULT_GET_HINDEX(x) (((__force unsigned int)(x) >> 16) & 0xf) #define VM_FAULT_ERROR (VM_FAULT_OOM | VM_FAULT_SIGBUS | \ VM_FAULT_SIGSEGV | VM_FAULT_HWPOISON | \ |