Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
---
fs/configfs/item.c | 6 ++++++
include/linux/configfs.h | 1 +
2 files changed, 7 insertions(+)
diff --git a/fs/configfs/item.c b/fs/configfs/item.c
index 8b2a994042dd..e3501b9bbb60 100644
--- a/fs/configfs/item.c
+++ b/fs/configfs/item.c
@@ -138,6 +138,12 @@ struct config_item *config_item_get(struct config_item *item)
}
EXPORT_SYMBOL(config_item_get);
+struct config_item *config_item_get_unless_zero(struct config_item *item)
+{
+ return item && kref_get_unless_zero(&item->ci_kref) ? item : NULL;
+}
+EXPORT_SYMBOL(config_item_get_unless_zero);
+
static void config_item_cleanup(struct config_item *item)
{
struct config_item_type *t = item->ci_type;
diff --git a/include/linux/configfs.h b/include/linux/configfs.h
index 2319b8c108e8..406e16dabc28 100644
--- a/include/linux/configfs.h
+++ b/include/linux/configfs.h
@@ -75,6 +75,7 @@ extern void config_item_init_type_name(struct config_item *item,
struct config_item_type *type);
extern struct config_item * config_item_get(struct config_item *);
+extern struct config_item * config_item_get_unless_zero(struct config_item *);
extern void config_item_put(struct config_item *);
struct config_item_type {
--
2.11.0
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