[PATCH 02/24] bdi: Provide bdi_register_va()
From: Jan Kara <jack@suse.cz>
Date: 2017-02-02 17:35:58
Also in:
linux-fsdevel
Subsystem:
memory management, memory management - misc, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
Add function that registers bdi and takes va_list instead of variable number of arguments. Signed-off-by: Jan Kara <jack@suse.cz> --- include/linux/backing-dev.h | 2 ++ mm/backing-dev.c | 20 +++++++++++++++----- 2 files changed, 17 insertions(+), 5 deletions(-)
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 81c07ade4305..6865b1c8b122 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h@@ -30,6 +30,8 @@ void bdi_put(struct backing_dev_info *bdi); __printf(3, 4) 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);
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 7a5ba4163656..d59571023df7 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c@@ -824,18 +824,15 @@ struct backing_dev_info *bdi_alloc(gfp_t gfp_mask) } EXPORT_SYMBOL(bdi_alloc); -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) { - va_list args; struct device *dev; if (bdi->dev) /* The driver needs to use separate queues per device */ return 0; - va_start(args, fmt); dev = device_create_vargs(bdi_class, parent, MKDEV(0, 0), bdi, fmt, args); - va_end(args); if (IS_ERR(dev)) return PTR_ERR(dev);
@@ -851,6 +848,19 @@ int bdi_register(struct backing_dev_info *bdi, struct device *parent, trace_writeback_bdi_register(bdi); return 0; } +EXPORT_SYMBOL(bdi_register_va); + +int bdi_register(struct backing_dev_info *bdi, struct device *parent, + const char *fmt, ...) +{ + va_list args; + int ret; + + va_start(args, fmt); + ret = bdi_register_va(bdi, parent, fmt, args); + va_end(args); + return ret; +} EXPORT_SYMBOL(bdi_register); int bdi_register_dev(struct backing_dev_info *bdi, dev_t dev)
--
2.10.2