Re: [PATCH v6 1/5] mm/sparse: abstract sparse buffer allocations

[Oscar Salvador]

On Mon, Jul 16, 2018 at 01:44:43PM -0400, Pavel Tatashin wrote:
> When struct pages are allocated for sparse-vmemmap VA layout, we first try
> to allocate one large buffer, and than if that fails allocate struct pages
> for each section as we go.
> 
> The code that allocates buffer is uses global variables and is spread
> across several call sites.
> 
> Cleanup the code by introducing three functions to handle the global
> buffer:
> 
> sparse_buffer_init()	initialize the buffer
> sparse_buffer_fini()	free the remaining part of the buffer
> sparse_buffer_alloc()	alloc from the buffer, and if buffer is empty
> return NULL
> 
> Define these functions in sparse.c instead of sparse-vmemmap.c because
> later we will use them for non-vmemmap sparse allocations as well.
> 
> Signed-off-by: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>

I did not see anything wrong, so:

Reviewed-by: Oscar Salvador <osalvador@xxxxxxx>

Thanks
-- 
Oscar Salvador
SUSE L3