From: Jérôme Glisse <[email protected]> Several use case for getting pointer to spinlock protecting a directory.
Signed-off-by: Jérôme Glisse <[email protected]> --- include/linux/hmm_pt.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/include/linux/hmm_pt.h b/include/linux/hmm_pt.h index 36f7e00..27668a8 100644 --- a/include/linux/hmm_pt.h +++ b/include/linux/hmm_pt.h @@ -255,6 +255,16 @@ static inline void hmm_pt_directory_lock(struct hmm_pt *pt, spin_lock(&pt->lock); } +static inline spinlock_t *hmm_pt_directory_lock_ptr(struct hmm_pt *pt, + struct page *ptd, + unsigned level) +{ + if (level) + return &ptd->ptl; + else + return &pt->lock; +} + static inline void hmm_pt_directory_unlock(struct hmm_pt *pt, struct page *ptd, unsigned level) @@ -272,6 +282,13 @@ static inline void hmm_pt_directory_lock(struct hmm_pt *pt, spin_lock(&pt->lock); } +static inline spinlock_t *hmm_pt_directory_lock_ptr(struct hmm_pt *pt, + struct page *ptd, + unsigned level) +{ + return &pt->lock; +} + static inline void hmm_pt_directory_unlock(struct hmm_pt *pt, struct page *ptd, unsigned level) @@ -397,6 +414,13 @@ static inline void hmm_pt_iter_directory_lock(struct hmm_pt_iter *iter, hmm_pt_directory_lock(pt, iter->ptd[pt->llevel - 1], pt->llevel); } +static inline spinlock_t *hmm_pt_iter_directory_lock_ptr(struct hmm_pt_iter *iter, + struct hmm_pt *pt) +{ + return hmm_pt_directory_lock_ptr(pt, iter->ptd[pt->llevel - 1], + pt->llevel); +} + static inline void hmm_pt_iter_directory_unlock(struct hmm_pt_iter *iter, struct hmm_pt *pt) { -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
