On 2/19/19 12:04 PM, [email protected] wrote:
From: Jérôme Glisse <[email protected]>
Use an unsigned field for flags other than blockable and convert
the blockable field to be one of those flags.
Signed-off-by: Jérôme Glisse <[email protected]>
Cc: Christian König <[email protected]>
Cc: Joonas Lahtinen <[email protected]>
Cc: Jani Nikula <[email protected]>
Cc: Rodrigo Vivi <[email protected]>
Cc: Jan Kara <[email protected]>
Cc: Andrea Arcangeli <[email protected]>
Cc: Peter Xu <[email protected]>
Cc: Felix Kuehling <[email protected]>
Cc: Jason Gunthorpe <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Ross Zwisler <[email protected]>
Cc: Dan Williams <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Cc: Radim Krčmář <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Christian Koenig <[email protected]>
Cc: Ralph Campbell <[email protected]>
Cc: John Hubbard <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: Arnd Bergmann <[email protected]>
---
include/linux/mmu_notifier.h | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h
index e630def131ce..c8672c366f67 100644
--- a/include/linux/mmu_notifier.h
+++ b/include/linux/mmu_notifier.h
@@ -25,11 +25,13 @@ struct mmu_notifier_mm {
spinlock_t lock;
};
+#define MMU_NOTIFIER_RANGE_BLOCKABLE (1 << 0)
+
struct mmu_notifier_range {
struct mm_struct *mm;
unsigned long start;
unsigned long end;
- bool blockable;
+ unsigned flags;
};
struct mmu_notifier_ops {
@@ -229,7 +231,7 @@ extern void __mmu_notifier_invalidate_range(struct
mm_struct *mm,
static inline bool
mmu_notifier_range_blockable(const struct mmu_notifier_range *range)
{
- return range->blockable;
+ return (range->flags & MMU_NOTIFIER_RANGE_BLOCKABLE);
}
static inline void mmu_notifier_release(struct mm_struct *mm)
@@ -275,7 +277,7 @@ static inline void
mmu_notifier_invalidate_range_start(struct mmu_notifier_range *range)
{
if (mm_has_notifiers(range->mm)) {
- range->blockable = true;
+ range->flags |= MMU_NOTIFIER_RANGE_BLOCKABLE;
__mmu_notifier_invalidate_range_start(range);
}
}
@@ -284,7 +286,7 @@ static inline int
mmu_notifier_invalidate_range_start_nonblock(struct mmu_notifier_range *range)
{
if (mm_has_notifiers(range->mm)) {
- range->blockable = false;
+ range->flags &= ~MMU_NOTIFIER_RANGE_BLOCKABLE;
return __mmu_notifier_invalidate_range_start(range);
}
return 0;
@@ -331,6 +333,7 @@ static inline void mmu_notifier_range_init(struct
mmu_notifier_range *range,
range->mm = mm;
range->start = start;
range->end = end;
+ range->flags = 0;
}
#define ptep_clear_flush_young_notify(__vma, __address, __ptep) \
Reviewed-by: Ralph Campbell <[email protected]>
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