14 files changed, 47 insertions, 32 deletions

diff --git a/drivers/md/dm-log-userspace-base.c b/drivers/md/dm-log-userspace-base.c
index 7ac2c1450d10..1ed0094f064b 100644
--- a/drivers/md/dm-log-userspace-base.c
+++ b/drivers/md/dm-log-userspace-base.c
@@ -5,6 +5,7 @@
  */
 
 #include <linux/bio.h>
+#include <linux/slab.h>
 #include <linux/dm-dirty-log.h>
 #include <linux/device-mapper.h>
 #include <linux/dm-log-userspace.h>
diff --git a/drivers/md/dm-log-userspace-transfer.c b/drivers/md/dm-log-userspace-transfer.c
index f1c8cae70b4b..075cbcf8a9f5 100644
--- a/drivers/md/dm-log-userspace-transfer.c
+++ b/drivers/md/dm-log-userspace-transfer.c
@@ -6,6 +6,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <net/sock.h>
 #include <linux/workqueue.h>
 #include <linux/connector.h>
diff --git a/drivers/md/dm-region-hash.c b/drivers/md/dm-region-hash.c
index 168bd38f5006..bd5c58b28868 100644
--- a/drivers/md/dm-region-hash.c
+++ b/drivers/md/dm-region-hash.c
@@ -11,6 +11,7 @@
 #include <linux/ctype.h>
 #include <linux/init.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/vmalloc.h>
 
 #include "dm.h"
diff --git a/drivers/md/dm-service-time.c b/drivers/md/dm-service-time.c
index cfa668f46c40..9c6c2e47ad62 100644
--- a/drivers/md/dm-service-time.c
+++ b/drivers/md/dm-service-time.c
@@ -11,6 +11,8 @@
 #include "dm.h"
 #include "dm-path-selector.h"
 
+#include <linux/slab.h>
+
 #define DM_MSG_PREFIX   "multipath service-time"
 #define ST_MIN_IO       1
 #define ST_MAX_RELATIVE_THROUGHPUT      100
diff --git a/drivers/md/dm-target.c b/drivers/md/dm-target.c
index 04feccf2a997..11dea11dc0b6 100644
--- a/drivers/md/dm-target.c
+++ b/drivers/md/dm-target.c
@@ -10,7 +10,6 @@
 #include <linux/init.h>
 #include <linux/kmod.h>
 #include <linux/bio.h>
-#include <linux/slab.h>
 
 #define DM_MSG_PREFIX "target"
 
diff --git a/drivers/md/faulty.c b/drivers/md/faulty.c
index 713acd02ab39..8e3850b98cca 100644
--- a/drivers/md/faulty.c
+++ b/drivers/md/faulty.c
@@ -64,6 +64,7 @@
 #define MaxFault        50
 #include <linux/blkdev.h>
 #include <linux/raid/md_u.h>
+#include <linux/slab.h>
 #include "md.h"
 #include <linux/seq_file.h>
 
diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index bb2a23159b21..09437e958235 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -19,6 +19,7 @@
 #include <linux/blkdev.h>
 #include <linux/raid/md_u.h>
 #include <linux/seq_file.h>
+#include <linux/slab.h>
 #include "md.h"
 #include "linear.h"
 
diff --git a/drivers/md/md.c b/drivers/md/md.c
index fdc1890b6ac5..cefd63daff31 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -49,6 +49,7 @@
 #include <linux/delay.h>
 #include <linux/raid/md_p.h>
 #include <linux/raid/md_u.h>
+#include <linux/slab.h>
 #include "md.h"
 #include "bitmap.h"
 
@@ -2108,12 +2109,18 @@ repeat:
                 if (!mddev->in_sync || mddev->recovery_cp != MaxSector) { /* not clean */
                         /* .. if the array isn't clean, an 'even' event must also go
                          * to spares. */
-                        if ((mddev->events&1)==0)
+                        if ((mddev->events&1)==0) {
                                 nospares = 0;
+                                sync_req = 2; /* force a second update to get the
+                                               * even/odd in sync */
+                        }
                 } else {
                         /* otherwise an 'odd' event must go to spares */
-                        if ((mddev->events&1))
+                        if ((mddev->events&1)) {
                                 nospares = 0;
+                                sync_req = 2; /* force a second update to get the
+                                               * even/odd in sync */
+                        }
                 }
         }
 
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 5558ebc705c8..789bf535d29c 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -22,6 +22,7 @@
 #include <linux/blkdev.h>
 #include <linux/raid/md_u.h>
 #include <linux/seq_file.h>
+#include <linux/slab.h>
 #include "md.h"
 #include "multipath.h"
 
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 377cf2a3c333..c3bec024612e 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -20,6 +20,7 @@
 
 #include <linux/blkdev.h>
 #include <linux/seq_file.h>
+#include <linux/slab.h>
 #include "md.h"
 #include "raid0.h"
 
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index f741f77eeb2b..e59b10e66edb 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -31,6 +31,7 @@
  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+#include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/blkdev.h>
 #include <linux/seq_file.h>
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index b4ba41ecbd20..e2766d8251a1 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -18,6 +18,7 @@
  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+#include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/blkdev.h>
 #include <linux/seq_file.h>
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 70ffbd071b2e..15348c393b5d 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -50,6 +50,7 @@
 #include <linux/async.h>
 #include <linux/seq_file.h>
 #include <linux/cpu.h>
+#include <linux/slab.h>
 #include "md.h"
 #include "raid5.h"
 #include "bitmap.h"
@@ -1526,7 +1527,7 @@ static void raid5_end_read_request(struct bio * bi, int error)
 
                 clear_bit(R5_UPTODATE, &sh->dev[i].flags);
                 atomic_inc(&rdev->read_errors);
-                if (conf->mddev->degraded)
+                if (conf->mddev->degraded >= conf->max_degraded)
                         printk_rl(KERN_WARNING
                                   "raid5:%s: read error not correctable "
                                   "(sector %llu on %s).\n",
@@ -1649,8 +1650,8 @@ static sector_t raid5_compute_sector(raid5_conf_t *conf, sector_t r_sector,
                                      int previous, int *dd_idx,
                                      struct stripe_head *sh)
 {
-        long stripe;
-        unsigned long chunk_number;
+        sector_t stripe, stripe2;
+        sector_t chunk_number;
         unsigned int chunk_offset;
         int pd_idx, qd_idx;
         int ddf_layout = 0;
@@ -1670,18 +1671,13 @@ static sector_t raid5_compute_sector(raid5_conf_t *conf, sector_t r_sector,
          */
         chunk_offset = sector_div(r_sector, sectors_per_chunk);
         chunk_number = r_sector;
-        BUG_ON(r_sector != chunk_number);
 
         /*
          * Compute the stripe number
          */
-        stripe = chunk_number / data_disks;
-
-        /*
-         * Compute the data disk and parity disk indexes inside the stripe
-         */
-        *dd_idx = chunk_number % data_disks;
-
+        stripe = chunk_number;
+        *dd_idx = sector_div(stripe, data_disks);
+        stripe2 = stripe;
         /*
          * Select the parity disk based on the user selected algorithm.
          */
@@ -1693,21 +1689,21 @@ static sector_t raid5_compute_sector(raid5_conf_t *conf, sector_t r_sector,
         case 5:
                 switch (algorithm) {
                 case ALGORITHM_LEFT_ASYMMETRIC:
-                        pd_idx = data_disks - stripe % raid_disks;
+                        pd_idx = data_disks - sector_div(stripe2, raid_disks);
                         if (*dd_idx >= pd_idx)
                                 (*dd_idx)++;
                         break;
                 case ALGORITHM_RIGHT_ASYMMETRIC:
-                        pd_idx = stripe % raid_disks;
+                        pd_idx = sector_div(stripe2, raid_disks);
                         if (*dd_idx >= pd_idx)
                                 (*dd_idx)++;
                         break;
                 case ALGORITHM_LEFT_SYMMETRIC:
-                        pd_idx = data_disks - stripe % raid_disks;
+                        pd_idx = data_disks - sector_div(stripe2, raid_disks);
                         *dd_idx = (pd_idx + 1 + *dd_idx) % raid_disks;
                         break;
                 case ALGORITHM_RIGHT_SYMMETRIC:
-                        pd_idx = stripe % raid_disks;
+                        pd_idx = sector_div(stripe2, raid_disks);
                         *dd_idx = (pd_idx + 1 + *dd_idx) % raid_disks;
                         break;
                 case ALGORITHM_PARITY_0:
@@ -1727,7 +1723,7 @@ static sector_t raid5_compute_sector(raid5_conf_t *conf, sector_t r_sector,
 
                 switch (algorithm) {
                 case ALGORITHM_LEFT_ASYMMETRIC:
-                        pd_idx = raid_disks - 1 - (stripe % raid_disks);
+                        pd_idx = raid_disks - 1 - sector_div(stripe2, raid_disks);
                         qd_idx = pd_idx + 1;
                         if (pd_idx == raid_disks-1) {
                                 (*dd_idx)++;    /* Q D D D P */
@@ -1736,7 +1732,7 @@ static sector_t raid5_compute_sector(raid5_conf_t *conf, sector_t r_sector,
                                 (*dd_idx) += 2; /* D D P Q D */
                         break;
                 case ALGORITHM_RIGHT_ASYMMETRIC:
-                        pd_idx = stripe % raid_disks;
+                        pd_idx = sector_div(stripe2, raid_disks);
                         qd_idx = pd_idx + 1;
                         if (pd_idx == raid_disks-1) {
                                 (*dd_idx)++;    /* Q D D D P */
@@ -1745,12 +1741,12 @@ static sector_t raid5_compute_sector(raid5_conf_t *conf, sector_t r_sector,
                                 (*dd_idx) += 2; /* D D P Q D */
                         break;
                 case ALGORITHM_LEFT_SYMMETRIC:
-                        pd_idx = raid_disks - 1 - (stripe % raid_disks);
+                        pd_idx = raid_disks - 1 - sector_div(stripe2, raid_disks);
                         qd_idx = (pd_idx + 1) % raid_disks;
                         *dd_idx = (pd_idx + 2 + *dd_idx) % raid_disks;
                         break;
                 case ALGORITHM_RIGHT_SYMMETRIC:
-                        pd_idx = stripe % raid_disks;
+                        pd_idx = sector_div(stripe2, raid_disks);
                         qd_idx = (pd_idx + 1) % raid_disks;
                         *dd_idx = (pd_idx + 2 + *dd_idx) % raid_disks;
                         break;
@@ -1769,7 +1765,7 @@ static sector_t raid5_compute_sector(raid5_conf_t *conf, sector_t r_sector,
                         /* Exactly the same as RIGHT_ASYMMETRIC, but or
                          * of blocks for computing Q is different.
                          */
-                        pd_idx = stripe % raid_disks;
+                        pd_idx = sector_div(stripe2, raid_disks);
                         qd_idx = pd_idx + 1;
                         if (pd_idx == raid_disks-1) {
                                 (*dd_idx)++;    /* Q D D D P */
@@ -1784,7 +1780,8 @@ static sector_t raid5_compute_sector(raid5_conf_t *conf, sector_t r_sector,
                          * D D D P Q  rather than
                          * Q D D D P
                          */
-                        pd_idx = raid_disks - 1 - ((stripe + 1) % raid_disks);
+                        stripe2 += 1;
+                        pd_idx = raid_disks - 1 - sector_div(stripe2, raid_disks);
                         qd_idx = pd_idx + 1;
                         if (pd_idx == raid_disks-1) {
                                 (*dd_idx)++;    /* Q D D D P */
@@ -1796,7 +1793,7 @@ static sector_t raid5_compute_sector(raid5_conf_t *conf, sector_t r_sector,
 
                 case ALGORITHM_ROTATING_N_CONTINUE:
                         /* Same as left_symmetric but Q is before P */
-                        pd_idx = raid_disks - 1 - (stripe % raid_disks);
+                        pd_idx = raid_disks - 1 - sector_div(stripe2, raid_disks);
                         qd_idx = (pd_idx + raid_disks - 1) % raid_disks;
                         *dd_idx = (pd_idx + 1 + *dd_idx) % raid_disks;
                         ddf_layout = 1;
@@ -1804,27 +1801,27 @@ static sector_t raid5_compute_sector(raid5_conf_t *conf, sector_t r_sector,
 
                 case ALGORITHM_LEFT_ASYMMETRIC_6:
                         /* RAID5 left_asymmetric, with Q on last device */
-                        pd_idx = data_disks - stripe % (raid_disks-1);
+                        pd_idx = data_disks - sector_div(stripe2, raid_disks-1);
                         if (*dd_idx >= pd_idx)
                                 (*dd_idx)++;
                         qd_idx = raid_disks - 1;
                         break;
 
                 case ALGORITHM_RIGHT_ASYMMETRIC_6:
-                        pd_idx = stripe % (raid_disks-1);
+                        pd_idx = sector_div(stripe2, raid_disks-1);
                         if (*dd_idx >= pd_idx)
                                 (*dd_idx)++;
                         qd_idx = raid_disks - 1;
                         break;
 
                 case ALGORITHM_LEFT_SYMMETRIC_6:
-                        pd_idx = data_disks - stripe % (raid_disks-1);
+                        pd_idx = data_disks - sector_div(stripe2, raid_disks-1);
                         *dd_idx = (pd_idx + 1 + *dd_idx) % (raid_disks-1);
                         qd_idx = raid_disks - 1;
                         break;
 
                 case ALGORITHM_RIGHT_SYMMETRIC_6:
-                        pd_idx = stripe % (raid_disks-1);
+                        pd_idx = sector_div(stripe2, raid_disks-1);
                         *dd_idx = (pd_idx + 1 + *dd_idx) % (raid_disks-1);
                         qd_idx = raid_disks - 1;
                         break;
@@ -1869,14 +1866,14 @@ static sector_t compute_blocknr(struct stripe_head *sh, int i, int previous)
                                  : conf->algorithm;
         sector_t stripe;
         int chunk_offset;
-        int chunk_number, dummy1, dd_idx = i;
+        sector_t chunk_number;
+        int dummy1, dd_idx = i;
         sector_t r_sector;
         struct stripe_head sh2;
 
 
         chunk_offset = sector_div(new_sector, sectors_per_chunk);
         stripe = new_sector;
-        BUG_ON(new_sector != stripe);
 
         if (i == sh->pd_idx)
                 return 0;
@@ -1969,7 +1966,7 @@ static sector_t compute_blocknr(struct stripe_head *sh, int i, int previous)
         }
 
         chunk_number = stripe * data_disks + i;
-        r_sector = (sector_t)chunk_number * sectors_per_chunk + chunk_offset;
+        r_sector = chunk_number * sectors_per_chunk + chunk_offset;
 
         check = raid5_compute_sector(conf, r_sector,
                                      previous, &dummy1, &sh2);
diff --git a/drivers/md/raid6algos.c b/drivers/md/raid6algos.c
index bffc61bff5ab..1f8784bfd44d 100644
--- a/drivers/md/raid6algos.c
+++ b/drivers/md/raid6algos.c
@@ -17,6 +17,7 @@
  */
 
 #include <linux/raid/pq.h>
+#include <linux/gfp.h>
 #ifndef __KERNEL__
 #include <sys/mman.h>
 #include <stdio.h>