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Subject[PATCH 04/21] fs: Add prototype declaration to appropriate header file include/linux/bio.h
Add prototype declaration to header file include/linux/bio.h because it
is used by more than one file.

This eliminates the following warning in bio-integrity.c:
fs/bio-integrity.c:214:14: warning: no previous prototype for ‘bio_integrity_tag_size’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <>

Some of the API functions like bio_integrity_tag_size appears to be
entirely unused. Such occurences should be pruned because they haven't
been used in any driver.

include/linux/bio.h | 1 +
1 file changed, 1 insertion(+)

diff --git a/include/linux/bio.h b/include/linux/bio.h
index 7065452..d6791bb 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -332,6 +332,7 @@ extern struct bio *bio_clone_fast(struct bio *, gfp_t, struct bio_set *);
extern struct bio *bio_clone_bioset(struct bio *, gfp_t, struct bio_set *bs);

extern struct bio_set *fs_bio_set;
+unsigned int bio_integrity_tag_size(struct bio *bio);

static inline struct bio *bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs)
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