diff options
| author | Tejun Heo <tj@kernel.org> | 2015-08-19 00:55:14 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-08-19 01:49:17 +0300 |
| commit | a9520cd6f2ac1fbbf206b915946534c6dddbaae2 (patch) | |
| tree | 906dbb619ff1c078486a2fad514d3427aeec6250 /block/cfq-iosched.c | |
| parent | b2ce2643cc705aa9043642d7b6248ccfd8e20629 (diff) | |
| download | linux-a9520cd6f2ac1fbbf206b915946534c6dddbaae2.tar.xz | |
blkcg: make blkcg_policy methods take a pointer to blkcg_policy_data
The newly added ->pd_alloc_fn() and ->pd_free_fn() deal with pd
(blkg_policy_data) while the older ones use blkg (blkcg_gq). As using
blkg doesn't make sense for ->pd_alloc_fn() and after allocation pd
can always be mapped to blkg and given that these are policy-specific
methods, it makes sense to converge on pd.
This patch makes all methods deal with pd instead of blkg. Most
conversions are trivial. In blk-cgroup.c, a couple method invocation
sites now test whether pd exists instead of policy state for
consistency. This shouldn't cause any behavioral differences.
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/cfq-iosched.c')
| -rw-r--r-- | block/cfq-iosched.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index 4b795c7250ef..95e6b0cbaa84 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -1597,18 +1597,18 @@ static struct blkg_policy_data *cfq_pd_alloc(gfp_t gfp, int node) return &cfqg->pd; } -static void cfq_pd_init(struct blkcg_gq *blkg) +static void cfq_pd_init(struct blkg_policy_data *pd) { - struct cfq_group *cfqg = blkg_to_cfqg(blkg); - struct cfq_group_data *cgd = blkcg_to_cfqgd(blkg->blkcg); + struct cfq_group *cfqg = pd_to_cfqg(pd); + struct cfq_group_data *cgd = blkcg_to_cfqgd(pd->blkg->blkcg); cfqg->weight = cgd->weight; cfqg->leaf_weight = cgd->leaf_weight; } -static void cfq_pd_offline(struct blkcg_gq *blkg) +static void cfq_pd_offline(struct blkg_policy_data *pd) { - struct cfq_group *cfqg = blkg_to_cfqg(blkg); + struct cfq_group *cfqg = pd_to_cfqg(pd); int i; for (i = 0; i < IOPRIO_BE_NR; i++) { @@ -1661,9 +1661,9 @@ static struct blkg_rwstat cfqg_rwstat_pd_recursive_sum(struct blkg_policy_data * return a; } -static void cfq_pd_reset_stats(struct blkcg_gq *blkg) +static void cfq_pd_reset_stats(struct blkg_policy_data *pd) { - struct cfq_group *cfqg = blkg_to_cfqg(blkg); + struct cfq_group *cfqg = pd_to_cfqg(pd); cfqg_stats_reset(&cfqg->stats); cfqg_stats_reset(&cfqg->dead_stats); |