diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memblock.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/mm/memblock.c b/mm/memblock.c index c0894c137954..b5d3026979fc 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -597,6 +597,17 @@ static int __init_memblock memblock_add_range(struct memblock_type *type, type->total_size = size; return 0; } + + /* + * The worst case is when new range overlaps all existing regions, + * then we'll need type->cnt + 1 empty regions in @type. So if + * type->cnt * 2 + 1 is less than type->max, we know + * that there is enough empty regions in @type, and we can insert + * regions directly. + */ + if (type->cnt * 2 + 1 < type->max) + insert = true; + repeat: /* * The following is executed twice. Once with %false @insert and |