[PATCHv3 03/11] drm/i915/gem: Use PG_dropbehind instead of PG_reclaim

[Andi Shyti]

Hi Kirill,

On Thu, Jan 30, 2025 at 12:00:41PM +0200, Kirill A. Shutemov wrote:
> The recently introduced PG_dropbehind allows for freeing folios
> immediately after writeback. Unlike PG_reclaim, it does not need vmscan
> to be involved to get the folio freed.
> 
> Instead of using folio_set_reclaim(), use folio_set_dropbehind() in
> __shmem_writeback()
> 
> It is safe to leave PG_dropbehind on the folio if, for some reason
> (bug?), the folio is not in a writeback state after ->writepage().
> In these cases, the kernel had to clear PG_reclaim as it shared a page
> flag bit with PG_readahead.
> 
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov at linux.intel.com>
> Acked-by: David Hildenbrand <david at redhat.com>

Reviewed-by: Andi Shyti <andi.shyti at linux.intel.com>

Thanks,
Andi