regulator: remove unused rockchip-pwm-regulator driver

[firefly-linux-kernel-4.4.55.git] / fs / xattr.c

diff --git a/fs/xattr.c b/fs/xattr.c
index 44377b6f60012d60dc4424049161008a4705c0ee..f0da9d24e9ca2ed4d23980dc8c0595d7e3dcbe21 100644 (file)
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -442,7 +442,7 @@ getxattr(struct dentry *d, const char __user *name, void __user *value,
                        size = XATTR_SIZE_MAX;
                kvalue = kzalloc(size, GFP_KERNEL | __GFP_NOWARN);
                if (!kvalue) {
-                       vvalue = vmalloc(size);
+                       vvalue = vzalloc(size);
                        if (!vvalue)
                                return -ENOMEM;
                        kvalue = vvalue;
@@ -790,6 +790,30 @@ EXPORT_SYMBOL(generic_listxattr);
 EXPORT_SYMBOL(generic_setxattr);
 EXPORT_SYMBOL(generic_removexattr);
 
+/**
+ * xattr_full_name  -  Compute full attribute name from suffix
+ *
+ * @handler:   handler of the xattr_handler operation
+ * @name:      name passed to the xattr_handler operation
+ *
+ * The get and set xattr handler operations are called with the remainder of
+ * the attribute name after skipping the handler's prefix: for example, "foo"
+ * is passed to the get operation of a handler with prefix "user." to get
+ * attribute "user.foo".  The full name is still "there" in the name though.
+ *
+ * Note: the list xattr handler operation when called from the vfs is passed a
+ * NULL name; some file systems use this operation internally, with varying
+ * semantics.
+ */
+const char *xattr_full_name(const struct xattr_handler *handler,
+                           const char *name)
+{
+       size_t prefix_len = strlen(handler->prefix);
+
+       return name - prefix_len;
+}
+EXPORT_SYMBOL(xattr_full_name);
+
 /*
  * Allocate new xattr and copy in the value; but leave the name to callers.
  */