Re: [PATCH 15/23] md/md-llbitmap: implement llbitmap IO

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Hi,

在 2025/05/27 16:27, Christoph Hellwig 写道:
FYI, I still find splitting the additioon of the new md-llbitmap.c into
multiple patches not helpful for reviewing it.  I'm mostly reviewing
the applied code and hope I didn't forget to place anything into the
right mail.

diff --git a/drivers/md/md-llbitmap.c b/drivers/md/md-llbitmap.c
new file mode 100644
index 000000000000..1a01b6777527
--- /dev/null
+++ b/drivers/md/md-llbitmap.c
@@ -0,0 +1,571 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#ifdef CONFIG_MD_LLBITMAP

Please don't ifdef the entire code in a sourc file, instead just compile
it conditionally:


md-mod-y        += md.o md-bitmap.o
md-mod-$(CONFIG_MD_LLBITMAP) += md-llbitmap.o


Thanks for the suggestion, this is indeed better.

+	BitNeedSync,
+	/* data is synchronizing */
+	BitSyncing,
+	nr_llbitmap_state,

Any reason nr_llbitmap_state, doesn't follow the naming scheme of the other
bits,?

I'm following the enum name(enum llbitmap_state) here, because this is
the number to total bits, not a meaningful bit.

Do you prefer a name like BitStateCount?

Thanks,
Kuai


+	BitmapActionStale,
+	nr_llbitmap_action,

Same here?

+			if (rdev->raid_disk < 0 || test_bit(Faulty, &rdev->flags))

Overly long line.
.






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