[XFS] Disable write barriers for now till intermittent IO errors are

[linux-2.6] / fs / partitions / ibm.c

diff --git a/fs/partitions/ibm.c b/fs/partitions/ibm.c
index 6327bcb2d73df0d99b90dbde3a14e7958e7de330..78010ad60e47e39da1ad55ec0c20beb75f0b266a 100644 (file)
--- a/fs/partitions/ibm.c
+++ b/fs/partitions/ibm.c
@@ -56,7 +56,10 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
        struct hd_geometry *geo;
        char type[5] = {0,};
        char name[7] = {0,};
-       struct vtoc_volume_label *vlabel;
+       union label_t {
+               struct vtoc_volume_label vol;
+               struct vtoc_cms_label cms;
+       } *label;
        unsigned char *data;
        Sector sect;
 
@@ -64,9 +67,8 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
                goto out_noinfo;
        if ((geo = kmalloc(sizeof(struct hd_geometry), GFP_KERNEL)) == NULL)
                goto out_nogeo;
-       if ((vlabel = kmalloc(sizeof(struct vtoc_volume_label),
-                             GFP_KERNEL)) == NULL)
-               goto out_novlab;
+       if ((label = kmalloc(sizeof(union label_t), GFP_KERNEL)) == NULL)
+               goto out_nolab;
        
        if (ioctl_by_bdev(bdev, BIODASDINFO, (unsigned long)info) != 0 ||
            ioctl_by_bdev(bdev, HDIO_GETGEO, (unsigned long)geo) != 0)
@@ -87,7 +89,7 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
                strncpy(name, data + 8, 6);
        else
                strncpy(name, data + 4, 6);
-       memcpy (vlabel, data, sizeof(struct vtoc_volume_label));
+       memcpy(label, data, sizeof(union label_t));
        put_dev_sector(sect);
 
        EBCASC(type, 4);
@@ -100,14 +102,12 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
                /*
                 * VM style CMS1 labeled disk
                 */
-               int *label = (int *) vlabel;
-
-               if (label[13] != 0) {
+               if (label->cms.disk_offset != 0) {
                        printk("CMS1/%8s(MDSK):", name);
                        /* disk is reserved minidisk */
-                       blocksize = label[3];
-                       offset = label[13];
-                       size = (label[7] - 1)*(blocksize >> 9);
+                       blocksize = label->cms.block_size;
+                       offset = label->cms.disk_offset;
+                       size = (label->cms.block_count - 1) * (blocksize >> 9);
                } else {
                        printk("CMS1/%8s:", name);
                        offset = (info->label_block + 1);
@@ -126,7 +126,7 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
                printk("VOL1/%8s:", name);
 
                /* get block number and read then go through format1 labels */
-               blk = cchhb2blk(&vlabel->vtoc, geo) + 1;
+               blk = cchhb2blk(&label->vol.vtoc, geo) + 1;
                counter = 0;
                while ((data = read_dev_sector(bdev, blk*(blocksize/512),
                                               &sect)) != NULL) {
@@ -174,7 +174,7 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
        }
 
        printk("\n");
-       kfree(vlabel);
+       kfree(label);
        kfree(geo);
        kfree(info);
        return 1;
@@ -182,8 +182,8 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
 out_readerr:
 out_badsect:
 out_noioctl:
-       kfree(vlabel);
-out_novlab:
+       kfree(label);
+out_nolab:
        kfree(geo);
 out_nogeo:
        kfree(info);