[PATCH v2 03/26] pstore: add flush

[dragos.tatulea@intel.com]

From: Adrian Hunter <adrian.hunter@intel.com>

Let the back end know when writing has finished by adding a flush method.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
---
 fs/pstore/platform.c   |    3 +++
 include/linux/pstore.h |    1 +
 2 files changed, 4 insertions(+)

diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index b9ab942..97ae8a9 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -114,6 +114,9 @@ static void pstore_dump(struct kmsg_dumper *dumper,
 
 	why = get_reason_str(reason);
 
+	if (psinfo->flush)
+		psinfo->flush(psinfo);
+
 	if (in_nmi()) {
 		is_locked = spin_trylock(&psinfo->buf_lock);
 		if (!is_locked)
diff --git a/include/linux/pstore.h b/include/linux/pstore.h
index 27f1995..3f93b4a 100644
--- a/include/linux/pstore.h
+++ b/include/linux/pstore.h
@@ -68,6 +68,7 @@ struct pstore_info {
 			struct pstore_info *psi);
 	int		(*erase)(enum pstore_type_id type, u64 id,
 			struct pstore_info *psi);
+	int		(*flush)(struct pstore_info *psi);
 	void		*data;
 };
 
-- 
1.7.9.5