Mel Gorman <mgor...@techsingularity.net> writes: > > __GFP_BITS_SHIFT + 5 (AS_NO_WRITEBACK_TAGS) = 31 > > mapping->flags is a combination of AS and GFP flags so increasing > __GFP_BITS_SHIFT overflows mapping->flags on 32-bit as gfp_t is an > unsigned int.
Couldn't we just split mapping->flags into two fields? I'm sure more GFP bits will be needed eventually. -Andi
