Commit c17add7a authored Aug 28, 2019 by Qu Wenruo Committed by David Sterba Oct 25, 2019

btrfs: Consider system chunk array size for new SYSTEM chunks



For SYSTEM chunks, despite the regular chunk item size limit, there is
another limit due to system chunk array size.

The extra limit was removed in a refactoring, so add it back.

Fixes: e3ecdb3f ("btrfs: factor out devs_max setting in __btrfs_alloc_chunk")
CC: stable@vger.kernel.org # 5.3+
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

parent ba0b084a

fs/btrfs/volumes.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -4967,6 +4967,7 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
		} else if (type & BTRFS_BLOCK_GROUP_SYSTEM) {
		max_stripe_size = SZ_32M;
		max_chunk_size = 2 * max_stripe_size;
		devs_max = min_t(int, devs_max, BTRFS_MAX_DEVS_SYS_CHUNK);
		} else {
		btrfs_err(info, "invalid chunk type 0x%llx requested",
		type);

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