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| author | Tejun Heo <tj@kernel.org> | 2015-08-18 14:55:10 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-08-18 15:49:16 -0700 |
| commit | 3e41871046bfe0ba7d122a1f14f0c1db2dca0256 (patch) | |
| tree | f6b33773063f53df1ab0751199a7f6830f6398bf /block/blk-cgroup.c | |
| parent | 4c55f4f9ad3001ac1fefdd8d8ca7641d18558e23 (diff) | |
| download | linux-0-day-3e41871046bfe0ba7d122a1f14f0c1db2dca0256.tar.gz linux-0-day-3e41871046bfe0ba7d122a1f14f0c1db2dca0256.tar.xz | |
blkcg: make blkcg_activate_policy() allow NULL ->pd_init_fn
blkg_create() allows NULL ->pd_init_fn() but blkcg_activate_policy()
doesn't. As both in-kernel policies implement ->pd_init_fn, it
currently doesn't break anything. Update blkcg_activate_policy() so
that its behavior is consistent with blkg_create().
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-cgroup.c')
| -rw-r--r-- | block/blk-cgroup.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 9e9b0df339ee6..4defbbabc0ff2 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -1083,7 +1083,8 @@ pd_prealloc: blkg->pd[pol->plid] = pd; pd->blkg = blkg; pd->plid = pol->plid; - pol->pd_init_fn(blkg); + if (pol->pd_init_fn) + pol->pd_init_fn(blkg); } __set_bit(pol->plid, q->blkcg_pols); |