linux-kernel - [PATCH v2 03/26] pstore: add flush

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Message-Id: <1352379984-18381-4-git-send-email-dragos.tatulea@intel.com>
Date:	Thu,  8 Nov 2012 15:06:01 +0200
From:	dragos.tatulea@...el.com
To:	linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org,
	cjb@...top.org
Cc:	kirill.shutemov@...ux.intel.com, irina.tirdea@...el.com,
	octavian.purdila@...el.com, tony.luck@...el.com,
	keescook@...omium.org, dragos.tatulea@...il.com,
	Adrian Hunter <adrian.hunter@...el.com>
Subject: [PATCH v2 03/26] pstore: add flush

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

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

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Signed-off-by: Irina Tirdea <irina.tirdea@...el.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

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