linux-kernel - [PATCH v2 19/35] bio.h: move bio_has_data() and bio_no_advance_iter() to blk

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Date: Fri,  9 Feb 2024 17:40:11 +0100
From: Max Kellermann <max.kellermann@...os.com>
To: linux-kernel@...r.kernel.org
Cc: Max Kellermann <max.kellermann@...os.com>
Subject: [PATCH v2 19/35] bio.h: move bio_has_data() and bio_no_advance_iter() to blk_types.h

"struct bio" has nothing to do with "bio.h", the naming is just
confusing.  This move will allow narrowing other dependencies later.

Signed-off-by: Max Kellermann <max.kellermann@...os.com>
---
 include/linux/bio.h       | 22 ----------------------
 include/linux/blk_types.h | 23 +++++++++++++++++++++++
 2 files changed, 23 insertions(+), 22 deletions(-)

diff --git a/include/linux/bio.h b/include/linux/bio.h
index afae5a73b7cd..b8562d4b57b2 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -49,28 +49,6 @@ static inline unsigned int bio_max_segs(unsigned int nr_segs)
 #define bio_data_dir(bio) \
 	(op_is_write(bio_op(bio)) ? WRITE : READ)
 
-/*
- * Check whether this bio carries any data or not. A NULL bio is allowed.
- */
-static inline bool bio_has_data(struct bio *bio)
-{
-	if (bio &&
-	    bio->bi_iter.bi_size &&
-	    bio_op(bio) != REQ_OP_DISCARD &&
-	    bio_op(bio) != REQ_OP_SECURE_ERASE &&
-	    bio_op(bio) != REQ_OP_WRITE_ZEROES)
-		return true;
-
-	return false;
-}
-
-static inline bool bio_no_advance_iter(const struct bio *bio)
-{
-	return bio_op(bio) == REQ_OP_DISCARD ||
-	       bio_op(bio) == REQ_OP_SECURE_ERASE ||
-	       bio_op(bio) == REQ_OP_WRITE_ZEROES;
-}
-
 static inline void *bio_data(struct bio *bio)
 {
 	if (bio_has_data(bio))
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index ad48c3f5ddd6..313db4b9b49e 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -284,6 +284,7 @@ struct bio {
 #define BIO_RESET_BYTES		offsetof(struct bio, bi_max_vecs)
 #define BIO_MAX_SECTORS		(UINT_MAX >> SECTOR_SHIFT)
 
+
 /*
  * bio flags
  */
@@ -434,6 +435,28 @@ static inline enum req_op bio_op(const struct bio *bio)
 	return bio->bi_opf & REQ_OP_MASK;
 }
 
+/*
+ * Check whether this bio carries any data or not. A NULL bio is allowed.
+ */
+static inline bool bio_has_data(struct bio *bio)
+{
+	if (bio &&
+	    bio->bi_iter.bi_size &&
+	    bio_op(bio) != REQ_OP_DISCARD &&
+	    bio_op(bio) != REQ_OP_SECURE_ERASE &&
+	    bio_op(bio) != REQ_OP_WRITE_ZEROES)
+		return true;
+
+	return false;
+}
+
+static inline bool bio_no_advance_iter(const struct bio *bio)
+{
+	return bio_op(bio) == REQ_OP_DISCARD ||
+	       bio_op(bio) == REQ_OP_SECURE_ERASE ||
+	       bio_op(bio) == REQ_OP_WRITE_ZEROES;
+}
+
 static inline bool blk_op_is_passthrough(blk_opf_t op)
 {
 	op &= REQ_OP_MASK;
-- 
2.39.2