On Tue, Nov 03, 2020 at 12:19:34AM +0000, James Troup wrote:

Christoph Hellwig [off-list ref] writes:

quoted

@@ -7809,6 +7778,36 @@ static int md_compat_ioctl(struct block_device *bdev, fmode_t mode,

[...]

quoted

+	 * Transitioning to readauto need only happen for arrays that call
+	 * md_write_start and which are not ready for writes yet.

I realise you're just moving the comment around but perhaps you could
s/readauto/readonly/ while you're doing so?

readonly doesn't make sense here as we transition away from read-only.
MD seems to have a read-auto mode, although it usually is spelled with
the dash, so I'll switch this comment to use the more common spelling.