mm/vmalloc.c: remove alloc_map from vmap_block
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> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -754,7 +754,6 @@ struct vmap_block {
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struct vmap_area *va;
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struct vmap_block_queue *vbq;
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unsigned long free, dirty;
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DECLARE_BITMAP(alloc_map, VMAP_BBMAP_BITS);
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DECLARE_BITMAP(dirty_map, VMAP_BBMAP_BITS);
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struct list_head free_list;
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struct rcu_head rcu_head;
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@ -820,7 +819,6 @@ static struct vmap_block *new_vmap_block(gfp_t gfp_mask)
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vb->va = va;
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vb->free = VMAP_BBMAP_BITS;
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vb->dirty = 0;
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bitmap_zero(vb->alloc_map, VMAP_BBMAP_BITS);
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bitmap_zero(vb->dirty_map, VMAP_BBMAP_BITS);
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INIT_LIST_HEAD(&vb->free_list);
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@ -873,7 +871,6 @@ static void purge_fragmented_blocks(int cpu)
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if (vb->free + vb->dirty == VMAP_BBMAP_BITS && vb->dirty != VMAP_BBMAP_BITS) {
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vb->free = 0; /* prevent further allocs after releasing lock */
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vb->dirty = VMAP_BBMAP_BITS; /* prevent purging it again */
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bitmap_fill(vb->alloc_map, VMAP_BBMAP_BITS);
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bitmap_fill(vb->dirty_map, VMAP_BBMAP_BITS);
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spin_lock(&vbq->lock);
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list_del_rcu(&vb->free_list);
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