diff options
| author | Ahmed S. Darwish <a.darwish@linutronix.de> | 2020-08-27 14:40:43 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-09-10 12:19:29 +0300 |
| commit | 24bf401cebfd630cc9e2c3746e43945e836626f9 (patch) | |
| tree | 4a2cd28e61390783176df3f11346a254c7e9bf2c /include | |
| parent | a1f1066133d85d5f42217cc72a2490bb7aa889c5 (diff) | |
| download | linux-24bf401cebfd630cc9e2c3746e43945e836626f9.tar.xz | |
rbtree_latch: Use seqcount_latch_t
Latch sequence counters have unique read and write APIs, and thus
seqcount_latch_t was recently introduced at seqlock.h.
Use that new data type instead of plain seqcount_t. This adds the
necessary type-safety and ensures that only latching-safe seqcount APIs
are to be used.
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200827114044.11173-8-a.darwish@linutronix.de
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/rbtree_latch.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/rbtree_latch.h b/include/linux/rbtree_latch.h index 7d012faa509a..3d1a9e716b80 100644 --- a/include/linux/rbtree_latch.h +++ b/include/linux/rbtree_latch.h @@ -42,8 +42,8 @@ struct latch_tree_node { }; struct latch_tree_root { - seqcount_t seq; - struct rb_root tree[2]; + seqcount_latch_t seq; + struct rb_root tree[2]; }; /** @@ -206,7 +206,7 @@ latch_tree_find(void *key, struct latch_tree_root *root, do { seq = raw_read_seqcount_latch(&root->seq); node = __lt_find(key, root, seq & 1, ops->comp); - } while (read_seqcount_retry(&root->seq, seq)); + } while (read_seqcount_latch_retry(&root->seq, seq)); return node; } |