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authorAnand Jain <Anand.Jain@oracle.com>2014-07-30 20:04:10 +0800
committerChris Mason <clm@fb.com>2014-09-17 13:38:01 -0700
commit79aec2b80db1089f983d60e4a22cb95d8b939844 (patch)
treeaf9e646054814b3f81be56e7e4393316376f1104 /fs/btrfs/sysfs.c
parent20ee0825ecec889afdf12f7c13b9dc3af0bb9f14 (diff)
btrfs: sysfs label interface should check for read only FS
Not sure how this escaped many eyes so far Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/sysfs.c')
-rw-r--r--fs/btrfs/sysfs.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index e6a5e7d82f42..b2e7bb4393f6 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -377,6 +377,9 @@ static ssize_t btrfs_label_store(struct kobject *kobj,
int ret;
size_t p_len;
+ if (fs_info->sb->s_flags & MS_RDONLY)
+ return -EROFS;
+
/*
* p_len is the len until the first occurrence of either
* '\n' or '\0'