Commit 28e68914 authored Sep 13, 2018 by Mike Snitzer Committed by Greg Kroah-Hartman Oct 10, 2018

dm thin metadata: fix __udivdi3 undefined on 32-bit



commit 013ad043906b2befd4a9bfb06219ed9fedd92716 upstream.

sector_div() is only viable for use with sector_t.
dm_block_t is typedef'd to uint64_t -- so use div_u64() instead.

Fixes: 3ab918281 ("dm thin metadata: try to avoid ever aborting transactions")
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 29b4641c

drivers/md/dm-thin-metadata.c

+2 −4

Original line number	Diff line number	Diff line
		@@ -843,10 +843,8 @@ static void __set_metadata_reserve(struct dm_pool_metadata *pmd)
		if (r) {
		DMERR("could not get size of metadata device");
		pmd->metadata_reserve = max_blocks;
		} else {
		sector_div(total, 10);
		pmd->metadata_reserve = min(max_blocks, total);
		}
		} else
		pmd->metadata_reserve = min(max_blocks, div_u64(total, 10));
		}

		struct dm_pool_metadata dm_pool_metadata_open(struct block_device bdev,