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authorZhang Yanfei <zhangyanfei@cn.fujitsu.com>2013-07-08 15:59:56 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-09 10:33:21 -0700
commitb8e748b6c32999f221ea4786557b8e7e6c4e4e7a (patch)
treef017d59c2b8bf3ba4df1b742e643a3fe1a83a3b4
parent9da3f59fbdb57c9447ddb42681f6ab98faef353a (diff)
downloadlinux-b8e748b6c32999f221ea4786557b8e7e6c4e4e7a.tar.bz2
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>
-rw-r--r--mm/vmalloc.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 99d045a0a0eb..7ac2a1f8358a 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);