From: Jérôme Glisse <jglisse@xxxxxxxxxx>
The #if/#else/#endif for IS_ENABLED(CONFIG_HMM) were wrong. Because
of this after multiple include there was multiple definition of both
hmm_mm_init() and hmm_mm_destroy() leading to build failure if HMM
was enabled (CONFIG_HMM set).
Changed since v1:
- Fix the maze when CONFIG_HMM is disabled not just when it is
disabled. This fix bot build failure.
- Improved commit message.
Signed-off-by: Jérôme Glisse <jglisse@xxxxxxxxxx>
Acked-by: Balbir Singh <bsingharora@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Ralph Campbell <rcampbell@xxxxxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Evgeny Baskakov <ebaskakov@xxxxxxxxxx>
---
include/linux/hmm.h | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/include/linux/hmm.h b/include/linux/hmm.h
index 325017ad9311..36dd21fe5caf 100644
--- a/include/linux/hmm.h
+++ b/include/linux/hmm.h
@@ -498,23 +498,16 @@ struct hmm_device {
struct hmm_device *hmm_device_new(void *drvdata);
void hmm_device_put(struct hmm_device *hmm_device);
#endif /* CONFIG_DEVICE_PRIVATE || CONFIG_DEVICE_PUBLIC */
-#endif /* IS_ENABLED(CONFIG_HMM) */
/* Below are for HMM internal use only! Not to be used by device driver! */
-#if IS_ENABLED(CONFIG_HMM_MIRROR)
void hmm_mm_destroy(struct mm_struct *mm);
static inline void hmm_mm_init(struct mm_struct *mm)
{
mm->hmm = NULL;
}
-#else /* IS_ENABLED(CONFIG_HMM_MIRROR) */
-static inline void hmm_mm_destroy(struct mm_struct *mm) {}
-static inline void hmm_mm_init(struct mm_struct *mm) {}
-#endif /* IS_ENABLED(CONFIG_HMM_MIRROR) */
-
-
#else /* IS_ENABLED(CONFIG_HMM) */
static inline void hmm_mm_destroy(struct mm_struct *mm) {}
static inline void hmm_mm_init(struct mm_struct *mm) {}
+#endif /* IS_ENABLED(CONFIG_HMM) */
#endif /* LINUX_HMM_H */
--
2.14.3