On Tue, Aug 25, 2020 at 03:23:55PM -0700, Darrick J. Wong wrote:
> Sorry for my ultra-slow response to this. The u64 length seems ok to me
> (or uint64_t, I don't care all /that/ much), but using loff_t as a
> return type bothers me because I see that and think that this function
> is returning a
On Mon, Aug 24, 2020 at 03:55:10PM +0100, Matthew Wilcox (Oracle) wrote:
> Pass the full length to iomap_zero() and dax_iomap_zero(), and have
> them return how many bytes they actually handled. This is preparatory
> work for handling THP, although it looks like DAX could actually take
> advantage
On Tue, Aug 25, 2020 at 01:40:24PM +0100, Matthew Wilcox wrote:
> Any objection to leaving this patch as-is with a u64 length?
No objection here - I just wanted to make sure that signed/unsigned
overflow was not going to be an issue...
Cheers,
Dave.
--
Dave Chinner
da...@fromorbit.com
On Tue, Aug 25, 2020 at 02:27:11PM +1000, Dave Chinner wrote:
> On Mon, Aug 24, 2020 at 09:35:59PM -0600, Andreas Dilger wrote:
> > On Aug 24, 2020, at 9:26 PM, Matthew Wilcox wrote:
> > >
> > > On Tue, Aug 25, 2020 at 10:27:35AM +1000, Dave Chinner wrote:
> > >>> do {
> > >>> -
On Mon, Aug 24, 2020 at 09:35:59PM -0600, Andreas Dilger wrote:
> On Aug 24, 2020, at 9:26 PM, Matthew Wilcox wrote:
> >
> > On Tue, Aug 25, 2020 at 10:27:35AM +1000, Dave Chinner wrote:
> >>> do {
> >>> - unsigned offset, bytes;
> >>> -
> >>> - offset = offset_in_page(pos);
> >
On Aug 24, 2020, at 9:26 PM, Matthew Wilcox wrote:
>
> On Tue, Aug 25, 2020 at 10:27:35AM +1000, Dave Chinner wrote:
>>> do {
>>> - unsigned offset, bytes;
>>> -
>>> - offset = offset_in_page(pos);
>>> - bytes = min_t(loff_t, PAGE_SIZE - offset, count);
>>> +
On Tue, Aug 25, 2020 at 10:27:35AM +1000, Dave Chinner wrote:
> > do {
> > - unsigned offset, bytes;
> > -
> > - offset = offset_in_page(pos);
> > - bytes = min_t(loff_t, PAGE_SIZE - offset, count);
> > + loff_t bytes;
> >
> > if (IS_DAX(ino
On Mon, Aug 24, 2020 at 03:55:10PM +0100, Matthew Wilcox (Oracle) wrote:
> Pass the full length to iomap_zero() and dax_iomap_zero(), and have
> them return how many bytes they actually handled. This is preparatory
> work for handling THP, although it looks like DAX could actually take
> advantage
Pass the full length to iomap_zero() and dax_iomap_zero(), and have
them return how many bytes they actually handled. This is preparatory
work for handling THP, although it looks like DAX could actually take
advantage of it if there's a larger contiguous area.
Signed-off-by: Matthew Wilcox (Oracl
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