diff options
| author | Jérôme Glisse <jglisse@redhat.com> | 2015-05-15 08:17:28 -0400 |
|---|---|---|
| committer | Jérôme Glisse <jglisse@redhat.com> | 2015-10-20 15:48:06 -0400 |
| commit | 6255a774b91c81ccc8de2f084ed97e7bdf2e3aea (patch) | |
| tree | f5ae0d4b86ec21cecfcdca53158abd1f02a3f850 | |
| parent | 6723a6939b4fa185882efd15f70c362ba4add6c5 (diff) | |
HMM: allow to get pointer to spinlock protecting a directory.
Several use case for getting pointer to spinlock protecting a directory.
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
| -rw-r--r-- | include/linux/hmm_pt.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/linux/hmm_pt.h b/include/linux/hmm_pt.h index f745d6c319dc..22100a6c3aa6 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) @@ -358,6 +375,14 @@ 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 *i) +{ + struct hmm_pt *pt = i->pt; + + return hmm_pt_directory_lock_ptr(pt, i->ptd[pt->llevel - 1], + pt->llevel); +} + static inline void hmm_pt_iter_directory_unlock(struct hmm_pt_iter *iter) { struct hmm_pt *pt = iter->pt; |