14 Oct
2021
14 Oct
'21
4:52 p.m.
On Thu, Oct 14, 2021 at 10:39:28AM -0500, Alex Sierra wrote:
From: Ralph Campbell rcampbell@nvidia.com
ZONE_DEVICE struct pages have an extra reference count that complicates the code for put_page() and several places in the kernel that need to check the reference count to see that a page is not being used (gup, compaction, migration, etc.). Clean up the code so the reference count doesn't need to be treated specially for ZONE_DEVICE.
Signed-off-by: Ralph Campbell rcampbell@nvidia.com Signed-off-by: Alex Sierra alex.sierra@amd.com Reviewed-by: Christoph Hellwig hch@lst.de
Reviewed-by: Matthew Wilcox (Oracle) willy@infradead.org