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| author | Jan Kara <jack@suse.cz> | 2017-04-12 12:24:25 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-04-20 12:09:55 -0600 |
| commit | baf7a616d537f577d33b7d9986f40532e2bd9f66 (patch) | |
| tree | 3eaedfef1afdc00ab57824802669d0f3f5a70d5e /mm/backing-dev.c | |
| parent | 2bc19cd5fdb5ff2c681761e81cc9044eb2ee753a (diff) | |
| download | linux-baf7a616d537f577d33b7d9986f40532e2bd9f66.tar.gz linux-baf7a616d537f577d33b7d9986f40532e2bd9f66.tar.bz2 linux-baf7a616d537f577d33b7d9986f40532e2bd9f66.zip | |
bdi: Provide bdi_register_va() and bdi_alloc()
Add function that registers bdi and takes va_list instead of variable
number of arguments.
Add bdi_alloc() as simple wrapper for NUMA-unaware users allocating BDI.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'mm/backing-dev.c')
| -rw-r--r-- | mm/backing-dev.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 3ea3bbd921d6..e5e0972bdd6f 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -856,18 +856,15 @@ struct backing_dev_info *bdi_alloc_node(gfp_t gfp_mask, int node_id) return bdi; } -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); @@ -884,6 +881,19 @@ 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) |