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authorImre Deak <imre.deak@nokia.com>2010-06-29 15:05:15 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-06-29 15:29:30 -0700
commite621ba9932aa0a90e47c12c958b3a3104915f3b9 (patch)
tree2481974f86f41cb47322fe52e6390f9db5d97968
parent984bc9601f64fd341b8573021d7c999f1f1499a9 (diff)
downloadlinux-e621ba9932aa0a90e47c12c958b3a3104915f3b9.tar.gz
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 243797f59b748f679ab88d456fcc4f92236d724b ("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>
-rw-r--r--lib/genalloc.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/lib/genalloc.c b/lib/genalloc.c
index 736c3b06398e..1923f1490e72 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,