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authorIngo Molnar <mingo@kernel.org>2020-10-09 08:55:17 +0200
committerIngo Molnar <mingo@kernel.org>2020-10-09 08:55:17 +0200
commite705d397965811ac528d7213b42d74ffe43caf38 (patch)
tree8a5bbe85cc42e64992b97859976e307027f83e33 /include/linux/bvec.h
parentd89d5f855f84ccf3f7e648813b4bb95c780bd7cd (diff)
parentbaffd723e44dc3d7f84f0b8f1fe1ece00ddd2710 (diff)
downloadcachepc-linux-e705d397965811ac528d7213b42d74ffe43caf38.tar.gz
cachepc-linux-e705d397965811ac528d7213b42d74ffe43caf38.zip
Merge branch 'locking/urgent' into locking/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/bvec.h')
-rw-r--r--include/linux/bvec.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/bvec.h b/include/linux/bvec.h
index ac0c7299d5b8..dd74503f7e5e 100644
--- a/include/linux/bvec.h
+++ b/include/linux/bvec.h
@@ -117,11 +117,18 @@ static inline bool bvec_iter_advance(const struct bio_vec *bv,
return true;
}
+static inline void bvec_iter_skip_zero_bvec(struct bvec_iter *iter)
+{
+ iter->bi_bvec_done = 0;
+ iter->bi_idx++;
+}
+
#define for_each_bvec(bvl, bio_vec, iter, start) \
for (iter = (start); \
(iter).bi_size && \
((bvl = bvec_iter_bvec((bio_vec), (iter))), 1); \
- bvec_iter_advance((bio_vec), &(iter), (bvl).bv_len))
+ (bvl).bv_len ? (void)bvec_iter_advance((bio_vec), &(iter), \
+ (bvl).bv_len) : bvec_iter_skip_zero_bvec(&(iter)))
/* for iterating one bio from start to end */
#define BVEC_ITER_ALL_INIT (struct bvec_iter) \