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genalloc: fix allocation from end of pool

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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 243797f59b
("genalloc: use bitmap_find_next_zero_area").

Signed-off-by: Imre Deak <imre.deak@nokia.com>
Cc: Zygo Blaxell <zygo.blaxell@xandros.com>
Cc: Tejun Heo <tj@kernel.org>
Acked-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Imre Deak 2010-06-29 15:05:15 -07:00 committed by Linus Torvalds
parent 984bc9601f
commit e621ba9932
1 changed files with 0 additions and 1 deletions
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lib/genalloc.c
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@ -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,