>From 7665b026ad2b56350267dc2a03150618598372dc Mon Sep 17 00:00:00 2001 From: Mikulas Patocka <[email protected]> Date: Thu, 14 Jan 2016 14:48:25 -0500 Subject: bio: have bio_kmap_irq return the size of mapped data
The function bio_kmap_irq is not usable because it does not return the size of the mapped data. Fix bio_kmap_irq and __bio_kmap_irq so that they return the size of mapped data. Signed-off-by: Mikulas Patocka <[email protected]> Signed-off-by: Mike Snitzer <[email protected]> --- include/linux/bio.h | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) Index: linux-2.6/include/linux/bio.h =================================================================== --- linux-2.6.orig/include/linux/bio.h +++ linux-2.6/include/linux/bio.h @@ -549,14 +549,16 @@ static inline void bvec_kunmap_irq(char #endif static inline char *__bio_kmap_irq(struct bio *bio, struct bvec_iter iter, - unsigned long *flags) + unsigned long *flags, unsigned *size) { - return bvec_kmap_irq(&bio_iter_iovec(bio, iter), flags); + struct bio_vec bv = bio_iter_iovec(bio, iter); + *size = bv.bv_len; + return bvec_kmap_irq(&bv, flags); } #define __bio_kunmap_irq(buf, flags) bvec_kunmap_irq(buf, flags) -#define bio_kmap_irq(bio, flags) \ - __bio_kmap_irq((bio), (bio)->bi_iter, (flags)) +#define bio_kmap_irq(bio, flags, size) \ + __bio_kmap_irq((bio), (bio)->bi_iter, (flags), (size)) #define bio_kunmap_irq(buf,flags) __bio_kunmap_irq(buf, flags) /* -- dm-devel mailing list [email protected] https://www.redhat.com/mailman/listinfo/dm-devel
