On Thu, Oct 14, 2021 at 10:39:28AM -0500, Alex Sierra wrote: > From: Ralph Campbell <rcampbell@xxxxxxxxxx> > > 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@xxxxxxxxxx> > Signed-off-by: Alex Sierra <alex.sierra@xxxxxxx> > Reviewed-by: Christoph Hellwig <hch@xxxxxx> Reviewed-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
