• Andrew Morton's avatar
    [PATCH] discontigmem fixes and cleanups · 4b4b90a7
    Andrew Morton authored
    From Martin Bligh
    
    This patch fixes a nasty bug that wli found in buffer.c which
    cause an oops - we were using contig_page_data on a discontigmem
    machine. It's a slightly modified version of the fix wli suggested,
    tested on NUMA-Q.
    
    I've also added code to not define contig_page_data for discontigmem
    systems, to stop this from happening again. I wrapped a couple of
    bootmem functions that were using it in #ifndef CONFIG_DISCONTIGMEM.
    I suppose it's possible (though unlikely) that some other discontig
    arch might need to wrap a couple of functions in their tree similarly,
    but any borkage will just give a simple clear compiler error telling
    them exactly where the problem is.
    4b4b90a7
buffer.c 69 KB