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All callers now use copy_folio_from_iter_atomic(), so convert copy_page_from_iter_atomic(). While I'm in there, use kmap_local_folio() and pagefault_disable() instead of kmap_atomic(). That allows preemption and/or task migration to happen during the copy_from_user(). Also use the new folio_test_partial_kmap() predicate instead of open-coding it. Link: https://lkml.kernel.org/r/20250514170607.3000994-4-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Hugh Dickins <hughd@google.com> Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>