Merge tag 'md-3.5' of git://neil.brown.name/md

Pull md updates from NeilBrown:
 "It's been a busy cycle for md - lots of fun stuff here..  if you like
  this kind of thing :-)

  Main features:
   - RAID10 arrays can be reshaped - adding and removing devices and
     changing chunks (not 'far' array though)
   - allow RAID5 arrays to be reshaped with a backup file (not tested
     yet, but the priciple works fine for RAID10).
   - arrays can be reshaped while a bitmap is present - you no longer
     need to remove it first
   - SSSE3 support for RAID6 syndrome calculations

  and of course a number of minor fixes etc."

* tag 'md-3.5' of git://neil.brown.name/md: (56 commits)
  md/bitmap: record the space available for the bitmap in the superblock.
  md/raid10: Remove extras after reshape to smaller number of devices.
  md/raid5: improve removal of extra devices after reshape.
  md: check the return of mddev_find()
  MD RAID1: Further conditionalize 'fullsync'
  DM RAID: Use md_error() in place of simply setting Faulty bit
  DM RAID: Record and handle missing devices
  DM RAID: Set recovery flags on resume
  md/raid5: Allow reshape while a bitmap is present.
  md/raid10: resize bitmap when required during reshape.
  md: allow array to be resized while bitmap is present.
  md/bitmap: make sure reshape request are reflected in superblock.
  md/bitmap: add bitmap_resize function to allow bitmap resizing.
  md/bitmap: use DIV_ROUND_UP instead of open-code
  md/bitmap: create a 'struct bitmap_counts' substructure of 'struct bitmap'
  md/bitmap: make bitmap bitops atomic.
  md/bitmap: make _page_attr bitops atomic.
  md/bitmap: merge bitmap_file_unmap and bitmap_file_put.
  md/bitmap: remove async freeing of bitmap file.
  md/bitmap: convert some spin_lock_irqsave to spin_lock_irq
  ...

1 files changed, 25 insertions, 0 deletions

diff --git a/lib/raid6/mktables.c b/lib/raid6/mktables.c
index 8a3780902cec..39787db588b0 100644
--- a/lib/raid6/mktables.c
+++ b/lib/raid6/mktables.c
@@ -81,6 +81,31 @@ int main(int argc, char *argv[])
         printf("EXPORT_SYMBOL(raid6_gfmul);\n");
         printf("#endif\n");
 
+        /* Compute vector multiplication table */
+        printf("\nconst u8  __attribute__((aligned(256)))\n"
+                "raid6_vgfmul[256][32] =\n"
+                "{\n");
+        for (i = 0; i < 256; i++) {
+                printf("\t{\n");
+                for (j = 0; j < 16; j += 8) {
+                        printf("\t\t");
+                        for (k = 0; k < 8; k++)
+                                printf("0x%02x,%c", gfmul(i, j + k),
+                                       (k == 7) ? '\n' : ' ');
+                }
+                for (j = 0; j < 16; j += 8) {
+                        printf("\t\t");
+                        for (k = 0; k < 8; k++)
+                                printf("0x%02x,%c", gfmul(i, (j + k) << 4),
+                                       (k == 7) ? '\n' : ' ');
+                }
+                printf("\t},\n");
+        }
+        printf("};\n");
+        printf("#ifdef __KERNEL__\n");
+        printf("EXPORT_SYMBOL(raid6_vgfmul);\n");
+        printf("#endif\n");
+
         /* Compute power-of-2 table (exponent) */
         v = 1;
         printf("\nconst u8 __attribute__((aligned(256)))\n"