genalloc: fix allocation from end of pool

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. Fixes a regression introduced by 243797f ("genalloc: use bitmap_find_next_zero_area"). Signed-off-by: Imre Deak <[email protected]> Cc: Zygo Blaxell <[email protected]> Cc: Tejun Heo <[email protected]> Acked-by: Akinobu Mita <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
kyagi · Jun 29, 2010 · e621ba9 · e621ba9
1 parent 984bc96
commit e621ba9
Showing 1 changed file with 0 additions and 1 deletion.
diff --git 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,