Re: [PATCH RFCv2] mm/madvise: introduce MADV_POPULATE_(READ|WRITE) to prefault/prealloc memory
From: Kirill A. Shutemov <hidden>
Date: 2021-03-15 13:04:36
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linux-alpha, linux-api, linux-arch, lkml
On Mon, Mar 15, 2021 at 01:25:40PM +0100, David Hildenbrand wrote:
On 15.03.21 13:22, Kirill A. Shutemov wrote:quoted
On Mon, Mar 08, 2021 at 05:45:20PM +0100, David Hildenbrand wrote:quoted
+ case -EHWPOISON: /* Skip over any poisoned pages. */ + start += PAGE_SIZE; + continue;Why is it good approach? It's not abvious to me.My main motivation was to simplify return code handling. I don't want to return -EHWPOISON to user space
Why? Hiding the problem under the rug doesn't help anybody. SIGBUS later is not better than an error upfront. -- Kirill A. Shutemov