Hi Linus, please pull from:
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
tags/dax-fixes-6.1-rc8
...to receive a few bug fixes around the handling of "Soft Reserved"
memory and memory tiering information. Linux is starting to enounter
more real world systems that deploy an ACPI H
Shiyang Ruan wrote:
> fsdax page is used not only when CoW, but also mapread. To make the it
> easily understood, use 'share' to indicate that the dax page is shared
> by more than one extent. And add helper functions to use it.
>
> Also, the flag needs to be renamed to PAGE_MAPPING_DAX_SHARED.
>
Shiyang Ruan wrote:
> Changes since v1:
> 1. Added a snippet of the warning message and some of the failed cases
> 2. Separated the patch for easily review
> 3. Added page->share and its helper functions
> 4. Included the patch[1] that removes the restrictions of fsdax and reflink
> [1]
> http
On Fri, 2022-12-02 at 09:25 +, Shiyang Ruan wrote:
> If srcmap contains invalid data, such as HOLE and UNWRITTEN, the dest
> page should be zeroed. Otherwise, since it's a pmem, old data may
> remains on the dest page, the result of CoW will be incorrect.
>
> The function name is also not eas
On Fri, 2022-12-02 at 09:23 +, Shiyang Ruan wrote:
> fsdax page is used not only when CoW, but also mapread. To make the
> it
> easily understood, use 'share' to indicate that the dax page is
> shared
> by more than one extent. And add helper functions to use it.
>
> Also, the flag needs to b
On Fri, 2 Dec 2022 09:23:11 + Shiyang Ruan wrote:
> fsdax page is used not only when CoW, but also mapread. To make the it
> easily understood, use 'share' to indicate that the dax page is shared
> by more than one extent. And add helper functions to use it.
>
> Also, the flag needs to be r
If srcmap contains invalid data, such as HOLE and UNWRITTEN, the dest
page should be zeroed. Otherwise, since it's a pmem, old data may
remains on the dest page, the result of CoW will be incorrect.
The function name is also not easy to understand, rename it to
"dax_iomap_copy_around()", which me
fsdax page is used not only when CoW, but also mapread. To make the it
easily understood, use 'share' to indicate that the dax page is shared
by more than one extent. And add helper functions to use it.
Also, the flag needs to be renamed to PAGE_MAPPING_DAX_SHARED.
Signed-off-by: Shiyang Ruan
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