author: Daniel Vetter <daniel.vetter@ffwll.ch> 2020-11-27 17:41:25 +0100
committer: Daniel Vetter <daniel.vetter@ffwll.ch> 2021-01-12 14:26:31 +0100
commit: 74b30195395c406c787280a77ae55aed82dbbfc7
parent: 71a1d8ed900f8cf53151beff17e3e2ff8e9283a1
Commit Summary:
Diffstat:
1 file changed, 9 insertions, 0 deletions
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 96d0da65e088..9aefa7779b29 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -170,6 +170,16 @@ static int sysfs_kf_bin_mmap(struct kernfs_open_file *of,
return battr->mmap(of->file, kobj, battr, vma);
}
+static int sysfs_kf_bin_open(struct kernfs_open_file *of)
+{
+ struct bin_attribute *battr = of->kn->priv;
+
+ if (battr->mapping)
+ of->file->f_mapping = battr->mapping;
+
+ return 0;
+}
+
void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr)
{
struct kernfs_node *kn = kobj->sd, *tmp;
@@ -241,6 +251,7 @@ static const struct kernfs_ops sysfs_bin_kfops_mmap = {
.read = sysfs_kf_bin_read,
.write = sysfs_kf_bin_write,
.mmap = sysfs_kf_bin_mmap,
+ .open = sysfs_kf_bin_open,
};
int sysfs_add_file_mode_ns(struct kernfs_node *parent,