Added a comment.

alex · alex · commit ad0e9b7062c6 · 2018-06-19T22:47:02.000Z
diff --git a/src/sysctl.rs b/src/sysctl.rs
@@ -15,6 +15,8 @@ pub struct Sysctl<T: SysctlStorage> {
     header: *mut bindings::ctl_table_header,
 }
 
+// This is safe because the only public method we have is get(), which returns
+// &T, and T: Sync. Any new methods must adhere to this requirement.
 unsafe impl<T: SysctlStorage> Sync for Sysctl<T> {}
 
 pub trait SysctlStorage: Sync {

Original file line number	Diff line number	Diff line change
`@@ -15,6 +15,8 @@ pub struct Sysctl<T: SysctlStorage> {`
`15`	`15`	`header: *mut bindings::ctl_table_header,`
`16`	`16`	`}`
`17`	`17`
	`18`	`+// This is safe because the only public method we have is get(), which returns`
	`19`	`+// &T, and T: Sync. Any new methods must adhere to this requirement.`
`18`	`20`	`unsafe impl<T: SysctlStorage> Sync for Sysctl<T> {}`
`19`	`21`
`20`	`22`	`pub trait SysctlStorage: Sync {`