when zspage define 'huge', crash-utility zram decompress fail.

we need to be compatible with the previous kernel,

so we can't define 'huge' directly in zspage, just move to the right when calculating.

Link: https://lkml.kernel.org/r/20211115185909.3949505-6-minchan@kernel.org

Signed-off-by: chenguanyou <chenguanyou@xiaomi.com>

---

 defs.h     |  4 ++++

 diskdump.c | 21 ++++++++++++++++-----

 2 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/defs.h b/defs.h

index 96a7a2a..ac19410 100644

--- a/defs.h

+++ b/defs.h

@@ -2225,6 +2225,7 @@ struct offset_table {                    /* stash of commonly-used offsets */

    long module_memory_base;

    long module_memory_size;

    long irq_data_irq;

+   long zspage_huge;

 };

 struct size_table {         /* stash of commonly-used sizes */

@@ -7212,6 +7213,9 @@ ulong try_zram_decompress(ulonglong pte_val, unsigned char *buf, ulong len, ulon

 #define ZRAM_FLAG_SAME_BIT      (1<<25)

 struct zspage {

     struct {

+        // Link: https://lkml.kernel.org/r/20211115185909.3949505-6-minchan@kernel.org

+        // unsigned int huge : 1;  // compatible

+

         unsigned int fullness : 2;

         unsigned int class : 9;

         unsigned int isolated : 3;

diff --git a/diskdump.c b/diskdump.c