Hi, tj, I've reworked the patches on top of percpu/for-3.15. During pcpu_alloc_area(), we might merge the current head with the previous block. Since we have calculated the max_contig using the size of previous block before we skip it, and now we update the size of previous block, so we should renew the max_contig.
Signed-off-by: Jianyu Zhan <[email protected]> --- mm/percpu.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/percpu.c b/mm/percpu.c index 202e104..63e24fb 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -473,9 +473,11 @@ static int pcpu_alloc_area(struct pcpu_chunk *chunk, int size, int align) * uncommon for percpu allocations. */ if (head && (head < sizeof(int) || !(p[-1] & 1))) { + *p = off += head; if (p[-1] & 1) chunk->free_size -= head; - *p = off += head; + else + max_contig = max(*p - p[-1], max_contig); this_size -= head; head = 0; } -- 1.8.5.3 -- 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/
