Annotate dax_read_{lock,unlock} with their locking expectations to fix
this sparse report:drivers/dax/super.c:45:5: sparse: warning: context imbalance in 'dax_read_lock' - wrong count at exit drivers/dax/super.c: note: in included file (through include/linux/notifier.h, include/linux/memory_hotplug.h, include/linux/mmzone.h, include/linux/gfp.h, include/linux/mm.h, include/linux/pagemap.h): ./include/linux/srcu.h:189:9: sparse: warning: context imbalance in 'dax_read_unlock' - unexpected unlock Reported-by: kernel test robot <[email protected]> Link: http://lore.kernel.org/r/[email protected] Signed-off-by: Dan Williams <[email protected]> --- drivers/dax/super.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dax/super.c b/drivers/dax/super.c index 4909ad945a49..41342e47662d 100644 --- a/drivers/dax/super.c +++ b/drivers/dax/super.c @@ -42,13 +42,13 @@ static DEFINE_IDA(dax_minor_ida); static struct kmem_cache *dax_cache __read_mostly; static struct super_block *dax_superblock __read_mostly; -int dax_read_lock(void) +int dax_read_lock(void) __acquires(&dax_srcu) { return srcu_read_lock(&dax_srcu); } EXPORT_SYMBOL_GPL(dax_read_lock); -void dax_read_unlock(int id) +void dax_read_unlock(int id) __releases(&dax_srcu) { srcu_read_unlock(&dax_srcu, id); }
