Merge tag 'block-5.10-2020-12-05' of git://git.kernel.dk/linux-block (be1515ba) · Commits · 戴 / test

Pull block fix from Jens Axboe: "Single fix for an issue with chunk_sectors and stacked devices" * tag 'block-5.10-2020-12-05' of git://git.kernel.dk/linux-block: block: use gcd() to fix chunk_sectors limit stacking

block/blk-settings.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -547,7 +547,10 @@ int blk_stack_limits(struct queue_limits t, struct queue_limits b,

		t->io_min = max(t->io_min, b->io_min);
		t->io_opt = lcm_not_zero(t->io_opt, b->io_opt);
		t->chunk_sectors = lcm_not_zero(t->chunk_sectors, b->chunk_sectors);

		/* Set non-power-of-2 compatible chunk_sectors boundary */
		if (b->chunk_sectors)
		t->chunk_sectors = gcd(t->chunk_sectors, b->chunk_sectors);

		/* Physical block size a multiple of the logical block size? */
		if (t->physical_block_size & (t->logical_block_size - 1)) {

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