• Andrew Morton's avatar
    [PATCH] kmap_atomic fix in bio_copy() · 9d8e6506
    Andrew Morton authored
    bio_copy is doing
    
    	vfrom = kmap_atomic(bv->bv_page, KM_BIO_IRQ);
    	vto = kmap_atomic(bbv->bv_page, KM_BIO_IRQ);
    
    which, if I understand atomic kmaps, is incorrect.  Both source and
    dest will get the same pte.
    
    The patch creates a separate atomic kmap member for the destination and
    source of this copy.
    9d8e6506
aops.c 22.9 KB