diff options
author | Alex Shi <alex.shi@linaro.org> | 2016-11-29 16:06:48 +0800 |
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committer | Alex Shi <alex.shi@linaro.org> | 2016-11-29 16:06:48 +0800 |
commit | c39fa164766e4ead0594e8b6fd382b57fd9d5a1f (patch) | |
tree | 0bb4485a2b0ab7babf31e42a58e64d2f340153d8 /block | |
parent | 3597171388a04229cd831e371b6e1079417d6d52 (diff) | |
parent | 072c0f9ee4023f380774186c8cb95c0118d2f8dc (diff) |
Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android
Diffstat (limited to 'block')
-rw-r--r-- | block/blk-cgroup.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 9d359e05fad7..8161090a1970 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -788,6 +788,7 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol, { struct gendisk *disk; struct blkcg_gq *blkg; + struct module *owner; unsigned int major, minor; int key_len, part, ret; char *body; @@ -804,7 +805,9 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol, if (!disk) return -ENODEV; if (part) { + owner = disk->fops->owner; put_disk(disk); + module_put(owner); return -ENODEV; } @@ -820,7 +823,9 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol, ret = PTR_ERR(blkg); rcu_read_unlock(); spin_unlock_irq(disk->queue->queue_lock); + owner = disk->fops->owner; put_disk(disk); + module_put(owner); /* * If queue was bypassing, we should retry. Do so after a * short msleep(). It isn't strictly necessary but queue @@ -851,9 +856,13 @@ EXPORT_SYMBOL_GPL(blkg_conf_prep); void blkg_conf_finish(struct blkg_conf_ctx *ctx) __releases(ctx->disk->queue->queue_lock) __releases(rcu) { + struct module *owner; + spin_unlock_irq(ctx->disk->queue->queue_lock); rcu_read_unlock(); + owner = ctx->disk->fops->owner; put_disk(ctx->disk); + module_put(owner); } EXPORT_SYMBOL_GPL(blkg_conf_finish); |