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    SubjectRe: 2.6.23-rc6-mm1 panic (memory controller issue ?)
    On Wed, 19 Sep 2007, Balbir Singh wrote:

    > Yes, the whole code is very interesting. From add_to_page_cache()
    > we call radix_tree_preload with __GFP_HIGHMEM cleared, but
    > from __add_to_swap_cache(), we don't make any changes to the
    > gfp_mask. radix_tree_preload() calls kmem_cache_alloc() and in slub
    > there is a check
    > BUG_ON(flags & GFP_SLAB_BUG_MASK);
    > So, I guess all our allocations should check against __GFP_DMA and
    > __GFP_HIGHMEM. I'll review the code, test it and send a fix.

    You need to use the proper mask from include/linux/gfp.h. Masking
    individual bits will create problems when we create new bits.

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      Last update: 2007-09-19 20:57    [W:0.020 / U:4.692 seconds]
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