Re: [PATCH] staging: lustre: Fix the warning messages about casting without __user macro

From: Al Viro
Date: Wed Dec 10 2014 - 02:10:17 EST

On Tue, Dec 09, 2014 at 10:56:12PM -0800, Shalin Mehta wrote:
> From: Shalin Mehta <shalinmehta85@xxxxxxxxx>
> This issue is showed up while compiling with sparse. The iov_base in struct iovec struct explicitly declares that the assigned value should be user space pointer with __user macro. Where as here, the __user macro isn't used while casting.

... and pointers are not user space ones at all. Which is to say, quit
messing with casts; it's not struct iovec. Proper fix is to replace
it here (and in almost all places throughout drivers/staging/lustre) with
struct kvec. And yes, such a patch had been sent. Still not applied,
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