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Subject[PATCH 4/9] fs:ubifs: add hook for UBI bakvol in ubifs layer
Date
Add hook for UBI bakvol in ubifs layer.

open/close bakvol operation in ubifs mount.

Signed-off-by: Bean Huo <beanhuo@micron.com>
---
fs/ubifs/super.c | 6 ++++++
fs/ubifs/ubifs.h | 1 +
2 files changed, 7 insertions(+)

diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 9547a278..f3bf548 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1463,6 +1463,8 @@ static int mount_ubifs(struct ubifs_info *c)
dbg_gen("max. seq. number: %llu", c->max_sqnum);
dbg_gen("commit number: %llu", c->cmt_no);

+ init_bakvol(c->ubi, 1);
+
return 0;

out_infos:
@@ -1774,6 +1776,10 @@ static void ubifs_put_super(struct super_block *sb)
* the mutex is locked.
*/
mutex_lock(&c->umount_mutex);
+
+ /* Disable ubi MLC power loss backup function */
+ init_bakvol(c->ubi, 0);
+
if (!c->ro_mount) {
/*
* First of all kill the background thread to make sure it does
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index de75902..4af2d5a 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -1479,6 +1479,7 @@ extern const struct inode_operations ubifs_dir_inode_operations;
extern const struct inode_operations ubifs_symlink_inode_operations;
extern struct backing_dev_info ubifs_backing_dev_info;
extern struct ubifs_compressor *ubifs_compressors[UBIFS_COMPR_TYPES_CNT];
+extern void init_bakvol(struct ubi_volume_desc *desc, uint8_t choice);

/* io.c */
void ubifs_ro_mode(struct ubifs_info *c, int err);
--
1.9.1
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