Messages in this thread Patch in this message | | | Date | Fri, 07 Jun 2013 17:55:10 +0800 | From | Zhang Yanfei <> | Subject | [PATCH 3/3] mm, vmalloc: Remove alloc_map from vmap_block |
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As we have removed the dead code in the vb_alloc, it seems there is no place to use the alloc_map. So there is no reason to maintain the alloc_map in vmap_block.
Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> --- mm/vmalloc.c | 3 --- 1 files changed, 0 insertions(+), 3 deletions(-)
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 5c037b9..ad11d4f 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -754,7 +754,6 @@ struct vmap_block { struct vmap_area *va; struct vmap_block_queue *vbq; unsigned long free, dirty; - DECLARE_BITMAP(alloc_map, VMAP_BBMAP_BITS); DECLARE_BITMAP(dirty_map, VMAP_BBMAP_BITS); struct list_head free_list; struct rcu_head rcu_head; @@ -820,7 +819,6 @@ static struct vmap_block *new_vmap_block(gfp_t gfp_mask) vb->va = va; vb->free = VMAP_BBMAP_BITS; vb->dirty = 0; - bitmap_zero(vb->alloc_map, VMAP_BBMAP_BITS); bitmap_zero(vb->dirty_map, VMAP_BBMAP_BITS); INIT_LIST_HEAD(&vb->free_list); @@ -873,7 +871,6 @@ static void purge_fragmented_blocks(int cpu) if (vb->free + vb->dirty == VMAP_BBMAP_BITS && vb->dirty != VMAP_BBMAP_BITS) { vb->free = 0; /* prevent further allocs after releasing lock */ vb->dirty = VMAP_BBMAP_BITS; /* prevent purging it again */ - bitmap_fill(vb->alloc_map, VMAP_BBMAP_BITS); bitmap_fill(vb->dirty_map, VMAP_BBMAP_BITS); spin_lock(&vbq->lock); list_del_rcu(&vb->free_list); -- 1.7.1
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