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Subject[PATCH 1/3] f2fs: fix to consider multiple device for readonly check
Date
This patch introduce f2fs_hw_is_readonly() to check whether lower
device is readonly or not, it adapts multiple device scenario.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
---
fs/f2fs/f2fs.h | 14 ++++++++++++++
fs/f2fs/super.c | 2 +-
2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index e066f48b3f67..a73e7340a62f 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -3590,6 +3590,20 @@ static inline bool f2fs_realtime_discard_enable(struct f2fs_sb_info *sbi)
f2fs_hw_should_discard(sbi);
}

+static inline bool f2fs_hw_is_readonly(struct f2fs_sb_info *sbi)
+{
+ int i;
+
+ if (!f2fs_is_multi_device(sbi))
+ return bdev_read_only(sbi->sb->s_bdev);
+
+ for (i = 0; i < sbi->s_ndevs; i++)
+ if (bdev_read_only(FDEV(i).bdev))
+ return true;
+ return false;
+}
+
+
static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt)
{
clear_opt(sbi, ADAPTIVE);
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index cbbb1e35070d..0c3abcc0dd27 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -3377,7 +3377,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
* mount should be failed, when device has readonly mode, and
* previous checkpoint was not done by clean system shutdown.
*/
- if (bdev_read_only(sb->s_bdev) &&
+ if (f2fs_hw_is_readonly(sbi) &&
!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
err = -EROFS;
goto free_meta;
--
2.18.0.rc1
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