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| author | Alex Shi <alex.shi@linaro.org> | 2016-09-20 15:18:54 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-09-20 15:18:54 +0800 |
| commit | 5f87c475f82a75e10bc6e249b7471349f1ef1636 (patch) | |
| tree | df697b570c923c722b5ba24f502c6abdbb5e05f1 /mm/backing-dev.c | |
| parent | d3a1d035ef89cfb89cf6e2128d44b95771f2c7b4 (diff) | |
| parent | d2d693d1ba7d93ec7c5db8aca2da29a4c91f6782 (diff) | |
Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android
Conflicts:
in fs/proc/task_mmu.c:
looks like vma_get_anon_name() want have a name for anonymous
vma when there is no name used in vma. commit: 586278d78bf
The name show is after any other names, so it maybe covered.
but anyway, it just a show here.
Diffstat (limited to 'mm/backing-dev.c')
| -rw-r--r-- | mm/backing-dev.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c index cbe6f0b96f29..9ef80bf441b3 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -825,6 +825,20 @@ int bdi_register_dev(struct backing_dev_info *bdi, dev_t dev) } EXPORT_SYMBOL(bdi_register_dev); +int bdi_register_owner(struct backing_dev_info *bdi, struct device *owner) +{ + int rc; + + rc = bdi_register(bdi, NULL, "%u:%u", MAJOR(owner->devt), + MINOR(owner->devt)); + if (rc) + return rc; + bdi->owner = owner; + get_device(owner); + return 0; +} +EXPORT_SYMBOL(bdi_register_owner); + /* * Remove bdi from bdi_list, and ensure that it is no longer visible */ @@ -849,6 +863,11 @@ void bdi_unregister(struct backing_dev_info *bdi) device_unregister(bdi->dev); bdi->dev = NULL; } + + if (bdi->owner) { + put_device(bdi->owner); + bdi->owner = NULL; + } } void bdi_exit(struct backing_dev_info *bdi) |