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mm/backing-dev.c: use rb_entry() 

To make the code clearer, use rb_entry() instead of container_of() to
deal with rbtree.

Link: http://lkml.kernel.org/r/671275de093d93ddc7c6f77ddc0d357149691a39.1484306840.git.geliangtang@gmail.com
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Cc: Jens Axboe <axboe@fb.com>
Cc: Tejun Heo <tj@kernel.org>
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 15:45:52 -08:00 committed by Linus Torvalds
parent 21440d7eb9
commit bc71226b06
1 changed files with 2 additions and 2 deletions
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4
mm/backing-dev.c
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@ -411,8 +411,8 @@ wb_congested_get_create(struct backing_dev_info *bdi, int blkcg_id, gfp_t gfp)
while (*node != NULL) {
parent = *node;
congested = container_of(parent, struct bdi_writeback_congested,
rb_node);
congested = rb_entry(parent, struct bdi_writeback_congested,
rb_node);
if (congested->blkcg_id < blkcg_id)
node = &parent->rb_left;
else if (congested->blkcg_id > blkcg_id)