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mm/vmalloc.c: use rb_entry_safe

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Use rb_entry_safe() instead of open-coding it.

Link: http://lkml.kernel.org/r/81bb9820e5b9e4a1c596b3e76f88abf8c4a76cb0.1482221947.git.geliangtang@gmail.com
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Geliang Tang 2017-02-22 15:41:54 -08:00 committed by Linus Torvalds
parent 13ad59df67
commit 4583e77310
1 changed files with 1 additions and 1 deletions
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2
mm/vmalloc.c
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@ -2309,7 +2309,7 @@ EXPORT_SYMBOL_GPL(free_vm_area);
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
static struct vmap_area *node_to_va(struct rb_node *n) static struct vmap_area *node_to_va(struct rb_node *n)
{ {
return n ? rb_entry(n, struct vmap_area, rb_node) : NULL; return rb_entry_safe(n, struct vmap_area, rb_node);
} }
/** /**