On Thu, 1 Dec 2022 15:58:11 -0800 "Darrick J. Wong" wrote:
> > --- a/fs/dax.c
> > +++ b/fs/dax.c
> > @@ -1092,7 +1092,7 @@ static int dax_iomap_direct_access(const struct iomap
> > *iomap, loff_t pos,
> > }
> >
> > /**
> > - * dax_iomap_cow_copy - Copy the data from source to destination
On Thu, Dec 01, 2022 at 03:28:53PM +, 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
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
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