bin_attributes created/updated in create_files() (such as those listed
via (struct device).attribute_groups) were not placed under the
specified group, and instead appeared in the base kobj directory.

Fix this by making bin_attributes use creating code similar to normal
attributes.

A quick grep shows that no one is using bin_attrs in a named attribute
group yet, so we can do this without breaking anything in usespace.

Note that I do not add is_visible() support to
bin_attributes, though that could be done as well.

Signed-off-by: Cody P Schafer <c...@linux.vnet.ibm.com>
---
 fs/sysfs/group.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index 6b57938..aa04068 100644
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c
@@ -70,8 +70,11 @@ static int create_files(struct kernfs_node *parent, struct 
kobject *kobj,
        if (grp->bin_attrs) {
                for (bin_attr = grp->bin_attrs; *bin_attr; bin_attr++) {
                        if (update)
-                               sysfs_remove_bin_file(kobj, *bin_attr);
-                       error = sysfs_create_bin_file(kobj, *bin_attr);
+                               kernfs_remove_by_name(parent,
+                                               (*bin_attr)->attr.name);
+                       error = sysfs_add_file_mode_ns(parent,
+                                       &(*bin_attr)->attr, true,
+                                       (*bin_attr)->attr.mode, NULL);
                        if (error)
                                break;
                }
-- 
1.8.5.4

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