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backing: silence compiler warning using __printf

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__printf marker was added in commit d2cc4dde92 ("bdi_register: add
__printf verification, fix arg mismatch") for function `bdi_register`
since it is useful to verify format and arguments. Apply equivalent gcc
attribute to `bdi_register_va`.

Remove warning triggered with W=1:

  mm/backing-dev.c:881:2: warning: function might be possible candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]

Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Mathieu Malaterre 2018-04-06 22:14:51 +02:00 committed by Jens Axboe
parent 37c7c6c76d
commit a93f00b376
1 changed files with 1 additions and 0 deletions
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include/linux/backing-dev.h
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@ -28,6 +28,7 @@ void bdi_put(struct backing_dev_info *bdi);
__printf(2, 3)
int bdi_register(struct backing_dev_info *bdi, const char *fmt, ...);
__printf(2, 0)
int bdi_register_va(struct backing_dev_info *bdi, const char *fmt,
va_list args);
int bdi_register_owner(struct backing_dev_info *bdi, struct device *owner);