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Diffstat (limited to 'include/linux/blk_types.h')
-rw-r--r--include/linux/blk_types.h119
1 files changed, 63 insertions, 56 deletions
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index a24d4078fb21..1ef99790f6ed 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -240,6 +240,8 @@ static inline void bio_issue_init(struct bio_issue *issue,
((u64)size << BIO_ISSUE_SIZE_SHIFT));
}
+typedef __u32 __bitwise blk_opf_t;
+
typedef unsigned int blk_qc_t;
#define BLK_QC_T_NONE -1U
@@ -250,7 +252,7 @@ typedef unsigned int blk_qc_t;
struct bio {
struct bio *bi_next; /* request queue link */
struct block_device *bi_bdev;
- unsigned int bi_opf; /* bottom bits REQ_OP, top bits
+ blk_opf_t bi_opf; /* bottom bits REQ_OP, top bits
* req_flags.
*/
unsigned short bi_flags; /* BIO_* below */
@@ -337,8 +339,12 @@ enum {
typedef __u32 __bitwise blk_mq_req_flags_t;
-/*
- * Operations and flags common to the bio and request structures.
+#define REQ_OP_BITS 8
+#define REQ_OP_MASK (__force blk_opf_t)((1 << REQ_OP_BITS) - 1)
+#define REQ_FLAG_BITS 24
+
+/**
+ * enum req_op - Operations common to the bio and request structures.
* We use 8 bits for encoding the operation, and the remaining 24 for flags.
*
* The least significant bit of the operation number indicates the data
@@ -350,41 +356,37 @@ typedef __u32 __bitwise blk_mq_req_flags_t;
* If a operation does not transfer data the least significant bit has no
* meaning.
*/
-#define REQ_OP_BITS 8
-#define REQ_OP_MASK ((1 << REQ_OP_BITS) - 1)
-#define REQ_FLAG_BITS 24
-
-enum req_opf {
+enum req_op {
/* read sectors from the device */
- REQ_OP_READ = 0,
+ REQ_OP_READ = (__force blk_opf_t)0,
/* write sectors to the device */
- REQ_OP_WRITE = 1,
+ REQ_OP_WRITE = (__force blk_opf_t)1,
/* flush the volatile write cache */
- REQ_OP_FLUSH = 2,
+ REQ_OP_FLUSH = (__force blk_opf_t)2,
/* discard sectors */
- REQ_OP_DISCARD = 3,
+ REQ_OP_DISCARD = (__force blk_opf_t)3,
/* securely erase sectors */
- REQ_OP_SECURE_ERASE = 5,
+ REQ_OP_SECURE_ERASE = (__force blk_opf_t)5,
/* write the zero filled sector many times */
- REQ_OP_WRITE_ZEROES = 9,
+ REQ_OP_WRITE_ZEROES = (__force blk_opf_t)9,
/* Open a zone */
- REQ_OP_ZONE_OPEN = 10,
+ REQ_OP_ZONE_OPEN = (__force blk_opf_t)10,
/* Close a zone */
- REQ_OP_ZONE_CLOSE = 11,
+ REQ_OP_ZONE_CLOSE = (__force blk_opf_t)11,
/* Transition a zone to full */
- REQ_OP_ZONE_FINISH = 12,
+ REQ_OP_ZONE_FINISH = (__force blk_opf_t)12,
/* write data at the current zone write pointer */
- REQ_OP_ZONE_APPEND = 13,
+ REQ_OP_ZONE_APPEND = (__force blk_opf_t)13,
/* reset a zone write pointer */
- REQ_OP_ZONE_RESET = 15,
+ REQ_OP_ZONE_RESET = (__force blk_opf_t)15,
/* reset all the zone present on the device */
- REQ_OP_ZONE_RESET_ALL = 17,
+ REQ_OP_ZONE_RESET_ALL = (__force blk_opf_t)17,
/* Driver private requests */
- REQ_OP_DRV_IN = 34,
- REQ_OP_DRV_OUT = 35,
+ REQ_OP_DRV_IN = (__force blk_opf_t)34,
+ REQ_OP_DRV_OUT = (__force blk_opf_t)35,
- REQ_OP_LAST,
+ REQ_OP_LAST = (__force blk_opf_t)36,
};
enum req_flag_bits {
@@ -425,28 +427,31 @@ enum req_flag_bits {
__REQ_NR_BITS, /* stops here */
};
-#define REQ_FAILFAST_DEV (1ULL << __REQ_FAILFAST_DEV)
-#define REQ_FAILFAST_TRANSPORT (1ULL << __REQ_FAILFAST_TRANSPORT)
-#define REQ_FAILFAST_DRIVER (1ULL << __REQ_FAILFAST_DRIVER)
-#define REQ_SYNC (1ULL << __REQ_SYNC)
-#define REQ_META (1ULL << __REQ_META)
-#define REQ_PRIO (1ULL << __REQ_PRIO)
-#define REQ_NOMERGE (1ULL << __REQ_NOMERGE)
-#define REQ_IDLE (1ULL << __REQ_IDLE)
-#define REQ_INTEGRITY (1ULL << __REQ_INTEGRITY)
-#define REQ_FUA (1ULL << __REQ_FUA)
-#define REQ_PREFLUSH (1ULL << __REQ_PREFLUSH)
-#define REQ_RAHEAD (1ULL << __REQ_RAHEAD)
-#define REQ_BACKGROUND (1ULL << __REQ_BACKGROUND)
-#define REQ_NOWAIT (1ULL << __REQ_NOWAIT)
-#define REQ_CGROUP_PUNT (1ULL << __REQ_CGROUP_PUNT)
-
-#define REQ_NOUNMAP (1ULL << __REQ_NOUNMAP)
-#define REQ_POLLED (1ULL << __REQ_POLLED)
-#define REQ_ALLOC_CACHE (1ULL << __REQ_ALLOC_CACHE)
-
-#define REQ_DRV (1ULL << __REQ_DRV)
-#define REQ_SWAP (1ULL << __REQ_SWAP)
+#define REQ_FAILFAST_DEV \
+ (__force blk_opf_t)(1ULL << __REQ_FAILFAST_DEV)
+#define REQ_FAILFAST_TRANSPORT \
+ (__force blk_opf_t)(1ULL << __REQ_FAILFAST_TRANSPORT)
+#define REQ_FAILFAST_DRIVER \
+ (__force blk_opf_t)(1ULL << __REQ_FAILFAST_DRIVER)
+#define REQ_SYNC (__force blk_opf_t)(1ULL << __REQ_SYNC)
+#define REQ_META (__force blk_opf_t)(1ULL << __REQ_META)
+#define REQ_PRIO (__force blk_opf_t)(1ULL << __REQ_PRIO)
+#define REQ_NOMERGE (__force blk_opf_t)(1ULL << __REQ_NOMERGE)
+#define REQ_IDLE (__force blk_opf_t)(1ULL << __REQ_IDLE)
+#define REQ_INTEGRITY (__force blk_opf_t)(1ULL << __REQ_INTEGRITY)
+#define REQ_FUA (__force blk_opf_t)(1ULL << __REQ_FUA)
+#define REQ_PREFLUSH (__force blk_opf_t)(1ULL << __REQ_PREFLUSH)
+#define REQ_RAHEAD (__force blk_opf_t)(1ULL << __REQ_RAHEAD)
+#define REQ_BACKGROUND (__force blk_opf_t)(1ULL << __REQ_BACKGROUND)
+#define REQ_NOWAIT (__force blk_opf_t)(1ULL << __REQ_NOWAIT)
+#define REQ_CGROUP_PUNT (__force blk_opf_t)(1ULL << __REQ_CGROUP_PUNT)
+
+#define REQ_NOUNMAP (__force blk_opf_t)(1ULL << __REQ_NOUNMAP)
+#define REQ_POLLED (__force blk_opf_t)(1ULL << __REQ_POLLED)
+#define REQ_ALLOC_CACHE (__force blk_opf_t)(1ULL << __REQ_ALLOC_CACHE)
+
+#define REQ_DRV (__force blk_opf_t)(1ULL << __REQ_DRV)
+#define REQ_SWAP (__force blk_opf_t)(1ULL << __REQ_SWAP)
#define REQ_FAILFAST_MASK \
(REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER)
@@ -463,26 +468,28 @@ enum stat_group {
NR_STAT_GROUPS
};
-#define bio_op(bio) \
- ((bio)->bi_opf & REQ_OP_MASK)
+static inline enum req_op bio_op(const struct bio *bio)
+{
+ return bio->bi_opf & REQ_OP_MASK;
+}
/* obsolete, don't use in new code */
-static inline void bio_set_op_attrs(struct bio *bio, unsigned op,
- unsigned op_flags)
+static inline void bio_set_op_attrs(struct bio *bio, enum req_op op,
+ blk_opf_t op_flags)
{
bio->bi_opf = op | op_flags;
}
-static inline bool op_is_write(unsigned int op)
+static inline bool op_is_write(blk_opf_t op)
{
- return (op & 1);
+ return !!(op & (__force blk_opf_t)1);
}
/*
* Check if the bio or request is one that needs special treatment in the
* flush state machine.
*/
-static inline bool op_is_flush(unsigned int op)
+static inline bool op_is_flush(blk_opf_t op)
{
return op & (REQ_FUA | REQ_PREFLUSH);
}
@@ -492,13 +499,13 @@ static inline bool op_is_flush(unsigned int op)
* PREFLUSH flag. Other operations may be marked as synchronous using the
* REQ_SYNC flag.
*/
-static inline bool op_is_sync(unsigned int op)
+static inline bool op_is_sync(blk_opf_t op)
{
return (op & REQ_OP_MASK) == REQ_OP_READ ||
(op & (REQ_SYNC | REQ_FUA | REQ_PREFLUSH));
}
-static inline bool op_is_discard(unsigned int op)
+static inline bool op_is_discard(blk_opf_t op)
{
return (op & REQ_OP_MASK) == REQ_OP_DISCARD;
}
@@ -509,7 +516,7 @@ static inline bool op_is_discard(unsigned int op)
* due to its different handling in the block layer and device response in
* case of command failure.
*/
-static inline bool op_is_zone_mgmt(enum req_opf op)
+static inline bool op_is_zone_mgmt(enum req_op op)
{
switch (op & REQ_OP_MASK) {
case REQ_OP_ZONE_RESET:
@@ -522,7 +529,7 @@ static inline bool op_is_zone_mgmt(enum req_opf op)
}
}
-static inline int op_stat_group(unsigned int op)
+static inline int op_stat_group(enum req_op op)
{
if (op_is_discard(op))
return STAT_DISCARD;
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-13 20:37:15 +0000