Hi,
On 8/16/19 3:40 PM, Guilherme G. Piccoli wrote:
+static bool linear_is_missing_dev(struct mddev *mddev)
+{
+ struct md_rdev *rdev;
+ static int already_missing;
+ int def_disks, work_disks = 0;
+
+ def_disks = mddev->raid_disks;
+ rdev_for_each(rdev, mddev)
+ if (rdev->bdev->bd_disk->flags & GENHD_FL_UP)
+ work_disks++;
+
+ if (unlikely(def_disks - work_disks)) {
If my understanding is correct, after enter the branch,
+ if (already_missing < (def_disks - work_disks)) {
the above is always true since already_missing should be '0', right?
If so, maybe the above checking is pointless.
+ already_missing = def_disks - work_disks;
+ pr_warn("md: %s: linear array has %d missing/failed members\n",
+ mdname(mddev), already_missing);
+ }
+ return true;
+ }
+
+ already_missing = 0;
+ return false;
+}
+.
I'd suggest something like, just FYI.
bool already_missing = false;
int missing_disks;
missing_disks = def_disks - work_disks;
if (unlikely(missing_disks)) {
already_missing = true;
pr_warn("md: %s: linear array has %d missing/failed members\n", mdname(mddev), missing_disks);
}
return already_missing;
Thanks,
Guoqing
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