Merge tag 'locking-urgent-2022-05-08' of git://git.kernel.org/pub/scm/linux/kernel...

[linux-2.6-microblaze.git] / include / linux / net.h

diff --git a/include/linux/net.h b/include/linux/net.h
index ba736b4..12093f4 100644 (file)
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -125,6 +125,25 @@ struct socket {
        struct socket_wq        wq;
 };
 
+/*
+ * "descriptor" for what we're up to with a read.
+ * This allows us to use the same read code yet
+ * have multiple different users of the data that
+ * we read from a file.
+ *
+ * The simplest case just copies the data to user
+ * mode.
+ */
+typedef struct {
+       size_t written;
+       size_t count;
+       union {
+               char __user *buf;
+               void *data;
+       } arg;
+       int error;
+} read_descriptor_t;
+
 struct vm_area_struct;
 struct page;
 struct sockaddr;