On 11/25/2015 06:32 AM, Joonsoo Kim wrote: > Now, we have tracepoint in test_pages_isolated() to notify > pfn which cannot be isolated. But, in alloc_contig_range(), > some error path doesn't call test_pages_isolated() so it's still > hard to know exact pfn that causes allocation failure. > > This patch change this situation by calling test_pages_isolated() > in almost error path. In allocation failure case, some overhead > is added by this change, but, allocation failure is really rare > event so it would not matter. > > In fatal signal pending case, we don't call test_pages_isolated() > because this failure is intentional one. > > There was a bogus outer_start problem due to unchecked buddy order > and this patch also fix it. Before this patch, it didn't matter, > because end result is same thing. But, after this patch, > tracepoint will report failed pfn so it should be accurate. > > Signed-off-by: Joonsoo Kim <[email protected]>
Acked-by: Vlastimil Babka <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
