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btrfs: sysfs label interface should check for read only FS

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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>
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Anand Jain 2014-07-30 20:04:10 +08:00 • committed by Chris Mason
parent 20ee0825ec
commit 79aec2b80d
1 changed files with 3 additions and 0 deletions
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3
fs/btrfs/sysfs.c
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@ -377,6 +377,9 @@ static ssize_t btrfs_label_store(struct kobject *kobj,
int ret; int ret;
size_t p_len; 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 * p_len is the len until the first occurrence of either
* '\n' or '\0' * '\n' or '\0'