From: Vakul Garg
Date: Mon, 16 Jul 2018 21:27:11 +0530
> Zero-copy mode was left enabled even when zerocopy_from_iter() failed.
> Set the zero-copy mode only when zerocopy_from_iter() succeeds. This
> leads to removal of argument 'zc' of function decrypt_skb_update().
> Function decrypt_skb_updat
Zero-copy mode was left enabled even when zerocopy_from_iter() failed.
Set the zero-copy mode only when zerocopy_from_iter() succeeds. This
leads to removal of argument 'zc' of function decrypt_skb_update().
Function decrypt_skb_update() does not need to check whether
ctx->decrypted is set since it