[PATCH] md: convert 'faulty' and 'in_sync' fields to bits in 'flags' field

This has the advantage of removing the confusion caused by 'rdev_t' and
'mddev_t' both having 'in_sync' fields.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 18 insertions, 18 deletions

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 77610b98d4e0..d1c488b008af 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -525,19 +525,19 @@ static void error(mddev_t *mddev, mdk_rdev_t *rdev)
         raid5_conf_t *conf = (raid5_conf_t *) mddev->private;
         PRINTK("raid5: error called\n");
 
-        if (!rdev->faulty) {
+        if (!test_bit(Faulty, &rdev->flags)) {
                 mddev->sb_dirty = 1;
-                if (rdev->in_sync) {
+                if (test_bit(In_sync, &rdev->flags)) {
                         conf->working_disks--;
                         mddev->degraded++;
                         conf->failed_disks++;
-                        rdev->in_sync = 0;
+                        clear_bit(In_sync, &rdev->flags);
                         /*
                          * if recovery was running, make sure it aborts.
                          */
                         set_bit(MD_RECOVERY_ERR, &mddev->recovery);
                 }
-                rdev->faulty = 1;
+                set_bit(Faulty, &rdev->flags);
                 printk (KERN_ALERT
                         "raid5: Disk failure on %s, disabling device."
                         " Operation continuing on %d devices\n",
@@ -1003,12 +1003,12 @@ static void handle_stripe(struct stripe_head *sh)
                 }
                 if (dev->written) written++;
                 rdev = conf->disks[i].rdev; /* FIXME, should I be looking rdev */
-                if (!rdev || !rdev->in_sync) {
+                if (!rdev || !test_bit(In_sync, &rdev->flags)) {
                         /* The ReadError flag wil just be confusing now */
                         clear_bit(R5_ReadError, &dev->flags);
                         clear_bit(R5_ReWrite, &dev->flags);
                 }
-                if (!rdev || !rdev->in_sync
+                if (!rdev || !test_bit(In_sync, &rdev->flags)
                     || test_bit(R5_ReadError, &dev->flags)) {
                         failed++;
                         failed_num = i;
@@ -1027,7 +1027,7 @@ static void handle_stripe(struct stripe_head *sh)
 
                         if (test_bit(R5_ReadError, &sh->dev[i].flags)) {
                                 mdk_rdev_t *rdev = conf->disks[i].rdev;
-                                if (rdev && rdev->in_sync)
+                                if (rdev && test_bit(In_sync, &rdev->flags))
                                         /* multiple read failures in one stripe */
                                         md_error(conf->mddev, rdev);
                         }
@@ -1384,7 +1384,7 @@ static void handle_stripe(struct stripe_head *sh)
  
                 rcu_read_lock();
                 rdev = rcu_dereference(conf->disks[i].rdev);
-                if (rdev && rdev->faulty)
+                if (rdev && test_bit(Faulty, &rdev->flags))
                         rdev = NULL;
                 if (rdev)
                         atomic_inc(&rdev->nr_pending);
@@ -1458,7 +1458,7 @@ static void unplug_slaves(mddev_t *mddev)
         rcu_read_lock();
         for (i=0; i<mddev->raid_disks; i++) {
                 mdk_rdev_t *rdev = rcu_dereference(conf->disks[i].rdev);
-                if (rdev && !rdev->faulty && atomic_read(&rdev->nr_pending)) {
+                if (rdev && !test_bit(Faulty, &rdev->flags) && atomic_read(&rdev->nr_pending)) {
                         request_queue_t *r_queue = bdev_get_queue(rdev->bdev);
 
                         atomic_inc(&rdev->nr_pending);
@@ -1503,7 +1503,7 @@ static int raid5_issue_flush(request_queue_t *q, struct gendisk *disk,
         rcu_read_lock();
         for (i=0; i<mddev->raid_disks && ret == 0; i++) {
                 mdk_rdev_t *rdev = rcu_dereference(conf->disks[i].rdev);
-                if (rdev && !rdev->faulty) {
+                if (rdev && !test_bit(Faulty, &rdev->flags)) {
                         struct block_device *bdev = rdev->bdev;
                         request_queue_t *r_queue = bdev_get_queue(bdev);
 
@@ -1850,7 +1850,7 @@ static int run(mddev_t *mddev)
 
                 disk->rdev = rdev;
 
-                if (rdev->in_sync) {
+                if (test_bit(In_sync, &rdev->flags)) {
                         char b[BDEVNAME_SIZE];
                         printk(KERN_INFO "raid5: device %s operational as raid"
                                 " disk %d\n", bdevname(rdev->bdev,b),
@@ -2029,7 +2029,7 @@ static void status (struct seq_file *seq, mddev_t *mddev)
         for (i = 0; i < conf->raid_disks; i++)
                 seq_printf (seq, "%s",
                                conf->disks[i].rdev &&
-                               conf->disks[i].rdev->in_sync ? "U" : "_");
+                               test_bit(In_sync, &conf->disks[i].rdev->flags) ? "U" : "_");
         seq_printf (seq, "]");
 #if RAID5_DEBUG
 #define D(x) \
@@ -2056,7 +2056,7 @@ static void print_raid5_conf (raid5_conf_t *conf)
                 tmp = conf->disks + i;
                 if (tmp->rdev)
                 printk(" disk %d, o:%d, dev:%s\n",
-                        i, !tmp->rdev->faulty,
+                        i, !test_bit(Faulty, &tmp->rdev->flags),
                         bdevname(tmp->rdev->bdev,b));
         }
 }
@@ -2070,12 +2070,12 @@ static int raid5_spare_active(mddev_t *mddev)
         for (i = 0; i < conf->raid_disks; i++) {
                 tmp = conf->disks + i;
                 if (tmp->rdev
-                    && !tmp->rdev->faulty
-                    && !tmp->rdev->in_sync) {
+                    && !test_bit(Faulty, &tmp->rdev->flags)
+                    && !test_bit(In_sync, &tmp->rdev->flags)) {
                         mddev->degraded--;
                         conf->failed_disks--;
                         conf->working_disks++;
-                        tmp->rdev->in_sync = 1;
+                        set_bit(In_sync, &tmp->rdev->flags);
                 }
         }
         print_raid5_conf(conf);
@@ -2092,7 +2092,7 @@ static int raid5_remove_disk(mddev_t *mddev, int number)
         print_raid5_conf(conf);
         rdev = p->rdev;
         if (rdev) {
-                if (rdev->in_sync ||
+                if (test_bit(In_sync, &rdev->flags) ||
                     atomic_read(&rdev->nr_pending)) {
                         err = -EBUSY;
                         goto abort;
@@ -2127,7 +2127,7 @@ static int raid5_add_disk(mddev_t *mddev, mdk_rdev_t *rdev)
          */
         for (disk=0; disk < mddev->raid_disks; disk++)
                 if ((p=conf->disks + disk)->rdev == NULL) {
-                        rdev->in_sync = 0;
+                        clear_bit(In_sync, &rdev->flags);
                         rdev->raid_disk = disk;
                         found = 1;
                         if (rdev->saved_raid_disk != disk)