have raid10 check chunk size in run method instead of in md
raid10.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
Signed-off-by: raziebe@xxxxxxxxx
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 2405add..52ad64e 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -2055,7 +2055,15 @@ static int run(mddev_t *mddev)
"at least PAGE_SIZE(%ld).\n", PAGE_SIZE);
return -EINVAL;
}
-
+ /*
+ * chunk-size has to be a power of 2
+ */
+ if ((1 << ffz(~mddev->chunk_size)) != mddev->chunk_size) {
+ printk(KERN_ERR "%s chunk_size of %d not valid\n",
+ mdname(mddev),
+ mddev->chunk_size);
+ return -EINVAL;
+ }
nc = mddev->layout & 255;
fc = (mddev->layout >> 8) & 255;
fo = mddev->layout & (1<<16);
--
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