From 23f8f9b7caca83d3397b1288a519c6579b7fda88 Mon Sep 17 00:00:00 2001
From: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Date: Mon, 21 Apr 2014 20:13:12 +0800
Subject: [PATCH] btrfs: add dev maxs limit for __btrfs_alloc_chunk in kernel
 space

For RAID0,5,6,10,
For system chunk, there shouldn't be too many stripes to
make a btrfs_chunk that exceeds BTRFS_SYSTEM_CHUNK_ARRAY_SIZE
For data/meta chunk, there shouldn't be too many stripes to
make a btrfs_chunk that exceeds a leaf.

Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
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