linux-kernel - Re: [PATCH RFC v2 1/3] mm: Add f_op->populate() for populating memory outside of core mm

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Date:   Tue, 8 Mar 2022 13:16:34 +0200
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     linux-mm@...ck.org, linux-fsdevel@...r.kernel.org
Cc:     Dave Hansen <dave.hansen@...ux.intel.com>,
        Nathaniel McCallum <nathaniel@...fian.com>,
        Reinette Chatre <reinette.chatre@...el.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        linux-sgx@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH RFC v2 1/3] mm: Add f_op->populate() for populating
 memory outside of core mm

On Tue, Mar 08, 2022 at 01:10:01PM +0200, Jarkko Sakkinen wrote:
> @@ -1619,8 +1622,6 @@ int __mm_populate(unsigned long start, unsigned long len, int ignore_errors)
>  		 * range with the first VMA. Also, skip undesirable VMA types.
>  		 */
>  		nend = min(end, vma->vm_end);
> -		if (vma->vm_flags & (VM_IO | VM_PFNMAP))
> -			continue;
>  		if (nstart < vma->vm_start)
>  			nstart = vma->vm_start;
>  		/*

This was unintended, i.e. leaked into patch by mistake. I'll send an
update. There was one diff missing from staging area.

BR, Jarkko