1 file changed, 28 insertions(+), 1 deletion(-)
drivers/md/md.c | 29 ++++++++++++++++++++++++++++-
If all subdevices support the same protection format the MD device is
flagged as capable.
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
---
diff -r 49afddbc7220 -r 927db99c5b35 drivers/md/md.c
--- a/drivers/md/md.c Fri Apr 25 17:39:29 2008 -0400
+++ b/drivers/md/md.c Fri Apr 25 17:39:29 2008 -0400
@@ -3284,7 +3284,7 @@
int err;
int chunk_size;
struct list_head *tmp;
- mdk_rdev_t *rdev;
+ mdk_rdev_t *rdev, *prev;
struct gendisk *disk;
struct mdk_personality *pers;
char b[BDEVNAME_SIZE];
@@ -3541,6 +3541,32 @@
mddev->changed = 1;
md_new_event(mddev);
kobject_uevent(&mddev->gendisk->dev.kobj, KOBJ_CHANGE);
+
+ prev = NULL;
+
+ /* Data Integrity */
+ rdev_for_each(rdev, tmp, mddev) {
+
+ if (prev && blk_integrity_compare(prev->bdev, rdev->bdev) < 0) {
+ printk(KERN_ERR "%s: %s %s Integrity mismatch!\n",
+ __func__, prev->bdev->bd_disk->disk_name,
+ rdev->bdev->bd_disk->disk_name);
+ return 0;
+ }
+
+ prev = rdev;
+ }
+
+ if (prev && bdev_get_integrity(prev->bdev)) {
+
+ if (blk_integrity_register(disk, prev->bdev->bd_disk->integrity))
+ printk(KERN_ERR "%s: %s Could not register integrity!\n",
+ __func__, disk->disk_name);
+ else
+ printk(KERN_INFO "Enabling data integrity on %s\n",
+ disk->disk_name);
+ }
+
return 0;
}
@@ -3716,6 +3742,7 @@
printk(KERN_INFO "md: %s switched to read-only mode.\n",
mdname(mddev));
err = 0;
+ blk_integrity_unregister(disk);
md_new_event(mddev);
out:
return err;
--
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