summaryrefslogtreecommitdiff
path: root/include/linux/blk_types.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/blk_types.h')
-rw-r--r--include/linux/blk_types.h31
1 files changed, 18 insertions, 13 deletions
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index b588e968dc01..f254eb264924 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -26,11 +26,11 @@ typedef void (bio_destructor_t) (struct bio *);
struct bio {
struct bio *bi_next; /* request queue link */
struct block_device *bi_bdev;
- unsigned int bi_flags; /* status, command, etc */
int bi_error;
unsigned int bi_rw; /* bottom bits req flags,
* top bits REQ_OP
*/
+ unsigned short bi_flags; /* status, command, etc */
unsigned short bi_ioprio;
struct bvec_iter bi_iter;
@@ -114,19 +114,25 @@ struct bio {
/*
* Flags starting here get preserved by bio_reset() - this includes
- * BIO_POOL_IDX()
+ * BVEC_POOL_IDX()
*/
-#define BIO_RESET_BITS 13
-#define BIO_OWNS_VEC 13 /* bio_free() should free bvec */
+#define BIO_RESET_BITS 10
/*
- * top 4 bits of bio flags indicate the pool this bio came from
+ * We support 6 different bvec pools, the last one is magic in that it
+ * is backed by a mempool.
*/
-#define BIO_POOL_BITS (4)
-#define BIO_POOL_NONE ((1UL << BIO_POOL_BITS) - 1)
-#define BIO_POOL_OFFSET (32 - BIO_POOL_BITS)
-#define BIO_POOL_MASK (1UL << BIO_POOL_OFFSET)
-#define BIO_POOL_IDX(bio) ((bio)->bi_flags >> BIO_POOL_OFFSET)
+#define BVEC_POOL_NR 6
+#define BVEC_POOL_MAX (BVEC_POOL_NR - 1)
+
+/*
+ * Top 4 bits of bio flags indicate the pool the bvecs came from. We add
+ * 1 to the actual index so that 0 indicates that there are no bvecs to be
+ * freed.
+ */
+#define BVEC_POOL_BITS (4)
+#define BVEC_POOL_OFFSET (16 - BVEC_POOL_BITS)
+#define BVEC_POOL_IDX(bio) ((bio)->bi_flags >> BVEC_POOL_OFFSET)
#endif /* CONFIG_BLOCK */
@@ -143,7 +149,6 @@ enum rq_flag_bits {
__REQ_SYNC, /* request is sync (sync write or read) */
__REQ_META, /* metadata io request */
__REQ_PRIO, /* boost priority in cfq */
- __REQ_SECURE, /* secure discard (used with REQ_OP_DISCARD) */
__REQ_NOIDLE, /* don't anticipate more IO after this one */
__REQ_INTEGRITY, /* I/O includes block integrity payload */
@@ -192,7 +197,7 @@ enum rq_flag_bits {
(REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER)
#define REQ_COMMON_MASK \
(REQ_FAILFAST_MASK | REQ_SYNC | REQ_META | REQ_PRIO | REQ_NOIDLE | \
- REQ_PREFLUSH | REQ_FUA | REQ_SECURE | REQ_INTEGRITY | REQ_NOMERGE)
+ REQ_PREFLUSH | REQ_FUA | REQ_INTEGRITY | REQ_NOMERGE)
#define REQ_CLONE_MASK REQ_COMMON_MASK
/* This mask is used for both bio and request merge checking */
@@ -219,7 +224,6 @@ enum rq_flag_bits {
#define REQ_FLUSH_SEQ (1ULL << __REQ_FLUSH_SEQ)
#define REQ_IO_STAT (1ULL << __REQ_IO_STAT)
#define REQ_MIXED_MERGE (1ULL << __REQ_MIXED_MERGE)
-#define REQ_SECURE (1ULL << __REQ_SECURE)
#define REQ_PM (1ULL << __REQ_PM)
#define REQ_HASHED (1ULL << __REQ_HASHED)
#define REQ_MQ_INFLIGHT (1ULL << __REQ_MQ_INFLIGHT)
@@ -228,6 +232,7 @@ enum req_op {
REQ_OP_READ,
REQ_OP_WRITE,
REQ_OP_DISCARD, /* request to discard sectors */
+ REQ_OP_SECURE_ERASE, /* request to securely erase sectors */
REQ_OP_WRITE_SAME, /* write same block many times */
REQ_OP_FLUSH, /* request for cache flush */
};