Hello, This patch fixes a regression in the size of bitmap_head that resulted from the removal of all the #ifdef GATHER_STATISTICS tests.
Instead of a pointer to a descriptor, this patch gives each bitmap an integer that is the index of the bitmap_descriptor. Bootstrapped&tested on powerpc64-unknown-linux-gnu, and built on the same platform with memory statistics gathering enabled. OK for trunk? Ciao! Steven
smaller_bitmap_head.diff
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