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| author | Monam Agarwal | 2014-03-23 19:28:27 +0100 |
|---|---|---|
| committer | Mike Snitzer | 2014-03-27 21:56:24 +0100 |
| commit | 9cdb8520049629271ad411ac91ab1bea3e1cfa2b (patch) | |
| tree | ef6f040556af438122f4527bd72e393138a3d65c /drivers/md/dm.c | |
| parent | dm: stop using bi_private (diff) | |
| download | kernel-qcow2-linux-9cdb8520049629271ad411ac91ab1bea3e1cfa2b.tar.gz kernel-qcow2-linux-9cdb8520049629271ad411ac91ab1bea3e1cfa2b.tar.xz kernel-qcow2-linux-9cdb8520049629271ad411ac91ab1bea3e1cfa2b.zip | |
dm: use RCU_INIT_POINTER instead of rcu_assign_pointer in __unbind
Replace rcu_assign_pointer(p, NULL) with RCU_INIT_POINTER(p, NULL).
The rcu_assign_pointer() ensures that the initialization of a structure
is carried out before storing a pointer to that structure. And in the
case of the NULL pointer, there is no structure to initialize. So,
rcu_assign_pointer(p, NULL) can be safely converted to
RCU_INIT_POINTER(p, NULL).
Signed-off-by: Monam Agarwal <monamagarwal123@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm.c')
| -rw-r--r-- | drivers/md/dm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 0d52f6ff2a1e..6382213dbd88 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2163,7 +2163,7 @@ static struct dm_table *__unbind(struct mapped_device *md) return NULL; dm_table_event_callback(map, NULL, NULL); - rcu_assign_pointer(md->map, NULL); + RCU_INIT_POINTER(md->map, NULL); dm_sync_table(md); return map; |