[PATCH 26/94] Maple Tree: Add new data structure

[Liam Howlett]

Hello Peter,

Thank you for looking at this patch set!

* Peter Zijlstra <peterz at infradead.org> [210514 06:41]:
> On Wed, Apr 28, 2021 at 03:36:02PM +0000, Liam Howlett wrote:
> 
> > +/* Flags:
> > + * MAPLE_ALLOC_RANGE	Use allocation ranges (tracks gaps) in this tree
> > + * MAPLE_USE_RCU	Operate in read/copy/update mode for multi-readers.
> > + * MAPLE_HEIGHT_OFFSET	The position of the tree height in the flags
> > + * MAPLE_HEIGHT_MASK	The mask for the maple tree height value.
> > + */
> 
> Regular comment style would be:
> 
> /*
>  * Flags:
>  ...
>  */

I will fix this.

> 
> > +#define MAPLE_ALLOC_RANGE	1	// Bit 0
> > +#define MAPLE_USE_RCU		2	// Bit 1
> > +#define	MAPLE_HEIGHT_OFFSET	2	// Bit 2
> > +#define	MAPLE_HEIGHT_MASK	60	// Bits 2-5
> 
> Can we pretty please keep masks in hex, like:
> 
> #define MAPLE_HEIGHT_MASK	0x3c
> 
> Because then it's instantly obvious is it bits 2-5.
> 

Sure, I will change them all to two digit hex so they align.  I should
probably check that whitespace too.