[PATCH] genalloc: fix allocation from end of pool

[imre . deak]

From: Imre Deak <imre.deak@xxxxxxxxx>

bitmap_find_next_zero_area requires the size of the bitmap, we instead
passed the last suitable position. This made it impossible to allocate
from the end of the pool.

Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
CC: Zygo Blaxell <zygo.blaxell@xxxxxxxxxxx>
CC: Tejun Heo <tj@xxxxxxxxxx>
CC: Akinobu Mita <akinobu.mita@xxxxxxxxx>

---
 lib/genalloc.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/lib/genalloc.c b/lib/genalloc.c
index 736c3b0..1923f14 100644
--- a/lib/genalloc.c
+++ b/lib/genalloc.c
@@ -128,7 +128,6 @@ unsigned long gen_pool_alloc(struct gen_pool *pool, size_t size)
 		chunk = list_entry(_chunk, struct gen_pool_chunk, next_chunk);
 
 		end_bit = (chunk->end_addr - chunk->start_addr) >> order;
-		end_bit -= nbits + 1;
 
 		spin_lock_irqsave(&chunk->lock, flags);
 		start_bit = bitmap_find_next_zero_area(chunk->bits, end_bit, 0,
-- 
1.7.1

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