[dm-devel] [PATCH 0/4] eliminate SECTOR related magic numbers and duplicated conversions

[antlists]

On 05/05/2020 12:55, Zhen Lei wrote:
> When I studied the code of mm/swap, I found "1 << (PAGE_SHIFT - 9)" appears
> many times. So I try to clean up it.
> 
> 1. Replace "1 << (PAGE_SHIFT - 9)" or similar with SECTORS_PER_PAGE
> 2. Replace "PAGE_SHIFT - 9" with SECTORS_PER_PAGE_SHIFT
> 3. Replace "9" with SECTOR_SHIFT
> 4. Replace "512" with SECTOR_SIZE

Naive question - what is happening about 4096-byte sectors? Do we need 
to forward-plan?

Cheers,
Wol