[PATCH v2 16/35] ubifs: fill ->s_dev in ubifs_fill_super
Dongsheng Yang
yangds.fnst at cn.fujitsu.com
Wed Jul 29 22:48:12 PDT 2015
Some tools in userspace, such as quota-tools, are using
stat() to get the st_dev of a mount point then to find
out the device mounted on this mount point.
So we have to fill ->s_dev here to tell them which device
is mounted on this point.
Signed-off-by: Dongsheng Yang <yangds.fnst at cn.fujitsu.com>
---
fs/ubifs/super.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 27e1739..161b1a6 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -36,6 +36,7 @@
#include <linux/mount.h>
#include <linux/math64.h>
#include <linux/writeback.h>
+#include <linux/cdev.h>
#include "ubifs.h"
/*
@@ -2033,6 +2034,7 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_bdi = &c->bdi;
sb->s_cdev = ubi_get_volume_cdev(c->ubi);
+ sb->s_dev = sb->s_cdev->dev;
sb->s_fs_info = c;
sb->s_magic = UBIFS_SUPER_MAGIC;
sb->s_blocksize = UBIFS_BLOCK_SIZE;
--
1.8.4.2
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