X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=fs%2Fbtrfs%2Fsysfs.c;h=b2e7bb4393f65cf17575dadc2686a693d83bd253;hb=f667aef6af626d0cdce0204bc7a2888e62076525;hp=a1c10886d9f29043f57236feaad887c382ee434c;hpb=98b3d389eb473f28ef69547c0a9f72041c4c40e6;p=cascardo%2Flinux.git

diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index a1c10886d9f2..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'
@@ -401,7 +404,7 @@ static ssize_t btrfs_label_store(struct kobject *kobj,
 
 	return ret;
 }
-BTRFS_ATTR_RW(label, 0644, btrfs_label_show, btrfs_label_store);
+BTRFS_ATTR_RW(label, btrfs_label_show, btrfs_label_store);
 
 static ssize_t btrfs_nodesize_show(struct kobject *kobj,
 				struct kobj_attribute *a, char *buf)