diff options
| -rw-r--r-- | include/linux/backing-dev.h | 5 | ||||
| -rw-r--r-- | mm/backing-dev.c | 56 |
2 files changed, 6 insertions, 55 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 47a98e6e2a65..aaeb2ec5d33c 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -17,8 +17,6 @@ #include <linux/backing-dev-defs.h> #include <linux/slab.h> -int __must_check bdi_init(struct backing_dev_info *bdi); - static inline struct backing_dev_info *bdi_get(struct backing_dev_info *bdi) { kref_get(&bdi->refcnt); @@ -32,12 +30,9 @@ int bdi_register(struct backing_dev_info *bdi, struct device *parent, const char *fmt, ...); int bdi_register_va(struct backing_dev_info *bdi, struct device *parent, const char *fmt, va_list args); -int bdi_register_dev(struct backing_dev_info *bdi, dev_t dev); int bdi_register_owner(struct backing_dev_info *bdi, struct device *owner); void bdi_unregister(struct backing_dev_info *bdi); -int __must_check bdi_setup_and_register(struct backing_dev_info *, char *); -void bdi_destroy(struct backing_dev_info *bdi); struct backing_dev_info *bdi_alloc_node(gfp_t gfp_mask, int node_id); static inline struct backing_dev_info *bdi_alloc(gfp_t gfp_mask) { diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 3dd175986390..4dcd56947f2a 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -12,8 +12,6 @@ #include <linux/device.h> #include <trace/events/writeback.h> -static atomic_long_t bdi_seq = ATOMIC_LONG_INIT(0); - struct backing_dev_info noop_backing_dev_info = { .name = "noop", .capabilities = BDI_CAP_NO_ACCT_AND_WRITEBACK, @@ -242,6 +240,8 @@ static __init int bdi_class_init(void) } postcore_initcall(bdi_class_init); +static int bdi_init(struct backing_dev_info *bdi); + static int __init default_bdi_init(void) { int err; @@ -820,7 +820,7 @@ static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb) #endif /* CONFIG_CGROUP_WRITEBACK */ -int bdi_init(struct backing_dev_info *bdi) +static int bdi_init(struct backing_dev_info *bdi) { int ret; @@ -838,7 +838,6 @@ int bdi_init(struct backing_dev_info *bdi) return ret; } -EXPORT_SYMBOL(bdi_init); struct backing_dev_info *bdi_alloc_node(gfp_t gfp_mask, int node_id) { @@ -897,12 +896,6 @@ int bdi_register(struct backing_dev_info *bdi, struct device *parent, } EXPORT_SYMBOL(bdi_register); -int bdi_register_dev(struct backing_dev_info *bdi, dev_t dev) -{ - return bdi_register(bdi, NULL, "%u:%u", MAJOR(dev), MINOR(dev)); -} -EXPORT_SYMBOL(bdi_register_dev); - int bdi_register_owner(struct backing_dev_info *bdi, struct device *owner) { int rc; @@ -950,13 +943,6 @@ void bdi_unregister(struct backing_dev_info *bdi) } } -static void bdi_exit(struct backing_dev_info *bdi) -{ - WARN_ON_ONCE(bdi->dev); - wb_exit(&bdi->wb); - cgwb_bdi_exit(bdi); -} - static void release_bdi(struct kref *ref) { struct backing_dev_info *bdi = @@ -964,7 +950,9 @@ static void release_bdi(struct kref *ref) if (test_bit(WB_registered, &bdi->wb.state)) bdi_unregister(bdi); - bdi_exit(bdi); + WARN_ON_ONCE(bdi->dev); + wb_exit(&bdi->wb); + cgwb_bdi_exit(bdi); kfree(bdi); } @@ -974,38 +962,6 @@ void bdi_put(struct backing_dev_info *bdi) } EXPORT_SYMBOL(bdi_put); -void bdi_destroy(struct backing_dev_info *bdi) -{ - bdi_unregister(bdi); - bdi_exit(bdi); -} -EXPORT_SYMBOL(bdi_destroy); - -/* - * For use from filesystems to quickly init and register a bdi associated - * with dirty writeback - */ -int bdi_setup_and_register(struct backing_dev_info *bdi, char *name) -{ - int err; - - bdi->name = name; - bdi->capabilities = 0; - err = bdi_init(bdi); - if (err) - return err; - - err = bdi_register(bdi, NULL, "%.28s-%ld", name, - atomic_long_inc_return(&bdi_seq)); - if (err) { - bdi_destroy(bdi); - return err; - } - - return 0; -} -EXPORT_SYMBOL(bdi_setup_and_register); - static wait_queue_head_t congestion_wqh[2] = { __WAIT_QUEUE_HEAD_INITIALIZER(congestion_wqh[0]), __WAIT_QUEUE_HEAD_INITIALIZER(congestion_wqh[1]) |