Convert enum zio_flag to uint64_t

We ran out of space in enum zio_flag for additional flags. Rather than
introduce enum zio_flag2 and then modify a bunch of functions to take a
second flags variable, we expand the type to 64 bits via `typedef
uint64_t zio_flag_t`.

Reviewed-by: Allan Jude <allan@klarasystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@klarasystems.com>
Signed-off-by: Allan Jude <allan@klarasystems.com>
Co-authored-by: Richard Yao <richard.yao@klarasystems.com>
Closes #14086 

12 files changed, 88 insertions, 83 deletions

diff --git a/include/os/linux/zfs/sys/trace_common.h b/include/os/linux/zfs/sys/trace_common.h
index 74d77c1c4b21..a14727f15eed 100644
--- a/include/os/linux/zfs/sys/trace_common.h
+++ b/include/os/linux/zfs/sys/trace_common.h
@@ -39,10 +39,10 @@
 		__field(hrtime_t,		zio_timestamp)		\
 		__field(hrtime_t,		zio_delta)		\
 		__field(uint64_t,		zio_delay)		\
-		__field(enum zio_flag,		zio_flags)		\
+		__field(zio_flag_t,		zio_flags)		\
 		__field(enum zio_stage,		zio_stage)		\
 		__field(enum zio_stage,		zio_pipeline)		\
-		__field(enum zio_flag,		zio_orig_flags)		\
+		__field(zio_flag_t,		zio_orig_flags)		\
 		__field(enum zio_stage,		zio_orig_stage)		\
 		__field(enum zio_stage,		zio_orig_pipeline)	\
 		__field(uint8_t,		zio_reexecute)		\
diff --git a/include/sys/dbuf.h b/include/sys/dbuf.h
index 06489ea84bf8..9ba46f0d725f 100644
--- a/include/sys/dbuf.h
+++ b/include/sys/dbuf.h
@@ -190,7 +190,7 @@ typedef struct dbuf_dirty_record {
 			uint64_t dr_blkid;
 			abd_t *dr_abd;
 			zio_prop_t dr_props;
-			enum zio_flag dr_flags;
+			zio_flag_t dr_flags;
 		} dll;
 	} dt;
 } dbuf_dirty_record_t;
@@ -380,7 +380,7 @@ void dmu_buf_write_embedded(dmu_buf_t *dbuf, void *data,
     int uncompressed_size, int compressed_size, int byteorder, dmu_tx_t *tx);
 
 int dmu_lightweight_write_by_dnode(dnode_t *dn, uint64_t offset, abd_t *abd,
-    const struct zio_prop *zp, enum zio_flag flags, dmu_tx_t *tx);
+    const struct zio_prop *zp, zio_flag_t flags, dmu_tx_t *tx);
 
 void dmu_buf_redact(dmu_buf_t *dbuf, dmu_tx_t *tx);
 void dbuf_destroy(dmu_buf_impl_t *db);
diff --git a/include/sys/zio.h b/include/sys/zio.h
index 23fdda457bc3..28ed837d829e 100644
--- a/include/sys/zio.h
+++ b/include/sys/zio.h
@@ -163,32 +163,37 @@ typedef enum zio_suspend_reason {
 	ZIO_SUSPEND_MMP,
 } zio_suspend_reason_t;
 
-enum zio_flag {
+/*
+ * This was originally an enum type. However, those are 32-bit and there is no
+ * way to make a 64-bit enum type. Since we ran out of bits for flags, we were
+ * forced to upgrade it to a uint64_t.
+ */
+typedef uint64_t zio_flag_t;
 	/*
 	 * Flags inherited by gang, ddt, and vdev children,
 	 * and that must be equal for two zios to aggregate
 	 */
-	ZIO_FLAG_DONT_AGGREGATE	= 1U << 0,
-	ZIO_FLAG_IO_REPAIR	= 1U << 1,
-	ZIO_FLAG_SELF_HEAL	= 1U << 2,
-	ZIO_FLAG_RESILVER	= 1U << 3,
-	ZIO_FLAG_SCRUB		= 1U << 4,
-	ZIO_FLAG_SCAN_THREAD	= 1U << 5,
-	ZIO_FLAG_PHYSICAL	= 1U << 6,
+#define	ZIO_FLAG_DONT_AGGREGATE	(1ULL << 0)
+#define	ZIO_FLAG_IO_REPAIR	(1ULL << 1)
+#define	ZIO_FLAG_SELF_HEAL	(1ULL << 2)
+#define	ZIO_FLAG_RESILVER	(1ULL << 3)
+#define	ZIO_FLAG_SCRUB		(1ULL << 4)
+#define	ZIO_FLAG_SCAN_THREAD	(1ULL << 5)
+#define	ZIO_FLAG_PHYSICAL	(1ULL << 6)
 
 #define	ZIO_FLAG_AGG_INHERIT	(ZIO_FLAG_CANFAIL - 1)
 
 	/*
 	 * Flags inherited by ddt, gang, and vdev children.
 	 */
-	ZIO_FLAG_CANFAIL	= 1U << 7,	/* must be first for INHERIT */
-	ZIO_FLAG_SPECULATIVE	= 1U << 8,
-	ZIO_FLAG_CONFIG_WRITER	= 1U << 9,
-	ZIO_FLAG_DONT_RETRY	= 1U << 10,
-	ZIO_FLAG_DONT_CACHE	= 1U << 11,
-	ZIO_FLAG_NODATA		= 1U << 12,
-	ZIO_FLAG_INDUCE_DAMAGE	= 1U << 13,
-	ZIO_FLAG_IO_ALLOCATING  = 1U << 14,
+#define	ZIO_FLAG_CANFAIL	(1ULL << 7)	/* must be first for INHERIT */
+#define	ZIO_FLAG_SPECULATIVE	(1ULL << 8)
+#define	ZIO_FLAG_CONFIG_WRITER	(1ULL << 9)
+#define	ZIO_FLAG_DONT_RETRY	(1ULL << 10)
+#define	ZIO_FLAG_DONT_CACHE	(1ULL << 11)
+#define	ZIO_FLAG_NODATA		(1ULL << 12)
+#define	ZIO_FLAG_INDUCE_DAMAGE	(1ULL << 13)
+#define	ZIO_FLAG_IO_ALLOCATING	(1ULL << 14)
 
 #define	ZIO_FLAG_DDT_INHERIT	(ZIO_FLAG_IO_RETRY - 1)
 #define	ZIO_FLAG_GANG_INHERIT	(ZIO_FLAG_IO_RETRY - 1)
@@ -196,30 +201,29 @@ enum zio_flag {
 	/*
 	 * Flags inherited by vdev children.
 	 */
-	ZIO_FLAG_IO_RETRY	= 1U << 15,	/* must be first for INHERIT */
-	ZIO_FLAG_PROBE		= 1U << 16,
-	ZIO_FLAG_TRYHARD	= 1U << 17,
-	ZIO_FLAG_OPTIONAL	= 1U << 18,
+#define	ZIO_FLAG_IO_RETRY	(1ULL << 15)	/* must be first for INHERIT */
+#define	ZIO_FLAG_PROBE		(1ULL << 16)
+#define	ZIO_FLAG_TRYHARD	(1ULL << 17)
+#define	ZIO_FLAG_OPTIONAL	(1ULL << 18)
 
 #define	ZIO_FLAG_VDEV_INHERIT	(ZIO_FLAG_DONT_QUEUE - 1)
 
 	/*
 	 * Flags not inherited by any children.
 	 */
-	ZIO_FLAG_DONT_QUEUE	= 1U << 19,	/* must be first for INHERIT */
-	ZIO_FLAG_DONT_PROPAGATE	= 1U << 20,
-	ZIO_FLAG_IO_BYPASS	= 1U << 21,
-	ZIO_FLAG_IO_REWRITE	= 1U << 22,
-	ZIO_FLAG_RAW_COMPRESS	= 1U << 23,
-	ZIO_FLAG_RAW_ENCRYPT	= 1U << 24,
-	ZIO_FLAG_GANG_CHILD	= 1U << 25,
-	ZIO_FLAG_DDT_CHILD	= 1U << 26,
-	ZIO_FLAG_GODFATHER	= 1U << 27,
-	ZIO_FLAG_NOPWRITE	= 1U << 28,
-	ZIO_FLAG_REEXECUTED	= 1U << 29,
-	ZIO_FLAG_DELEGATED	= 1U << 30,
-	ZIO_FLAG_FASTWRITE	= 1U << 31,
-};
+#define	ZIO_FLAG_DONT_QUEUE	(1ULL << 19)	/* must be first for INHERIT */
+#define	ZIO_FLAG_DONT_PROPAGATE	(1ULL << 20)
+#define	ZIO_FLAG_IO_BYPASS	(1ULL << 21)
+#define	ZIO_FLAG_IO_REWRITE	(1ULL << 22)
+#define	ZIO_FLAG_RAW_COMPRESS	(1ULL << 23)
+#define	ZIO_FLAG_RAW_ENCRYPT	(1ULL << 24)
+#define	ZIO_FLAG_GANG_CHILD	(1ULL << 25)
+#define	ZIO_FLAG_DDT_CHILD	(1ULL << 26)
+#define	ZIO_FLAG_GODFATHER	(1ULL << 27)
+#define	ZIO_FLAG_NOPWRITE	(1ULL << 28)
+#define	ZIO_FLAG_REEXECUTED	(1ULL << 29)
+#define	ZIO_FLAG_DELEGATED	(1ULL << 30)
+#define	ZIO_FLAG_FASTWRITE	(1ULL << 31)
 
 #define	ZIO_FLAG_MUSTSUCCEED		0
 #define	ZIO_FLAG_RAW	(ZIO_FLAG_RAW_COMPRESS | ZIO_FLAG_RAW_ENCRYPT)
@@ -489,10 +493,10 @@ struct zio {
 	zio_alloc_list_t 	io_alloc_list;
 
 	/* Internal pipeline state */
-	enum zio_flag	io_flags;
+	zio_flag_t	io_flags;
 	enum zio_stage	io_stage;
 	enum zio_stage	io_pipeline;
-	enum zio_flag	io_orig_flags;
+	zio_flag_t	io_orig_flags;
 	enum zio_stage	io_orig_stage;
 	enum zio_stage	io_orig_pipeline;
 	enum zio_stage	io_pipeline_trace;
@@ -529,27 +533,27 @@ enum blk_verify_flag {
 extern int zio_bookmark_compare(const void *, const void *);
 
 extern zio_t *zio_null(zio_t *pio, spa_t *spa, vdev_t *vd,
-    zio_done_func_t *done, void *priv, enum zio_flag flags);
+    zio_done_func_t *done, void *priv, zio_flag_t flags);
 
 extern zio_t *zio_root(spa_t *spa,
-    zio_done_func_t *done, void *priv, enum zio_flag flags);
+    zio_done_func_t *done, void *priv, zio_flag_t flags);
 
 extern void zio_destroy(zio_t *zio);
 
 extern zio_t *zio_read(zio_t *pio, spa_t *spa, const blkptr_t *bp,
     struct abd *data, uint64_t lsize, zio_done_func_t *done, void *priv,
-    zio_priority_t priority, enum zio_flag flags, const zbookmark_phys_t *zb);
+    zio_priority_t priority, zio_flag_t flags, const zbookmark_phys_t *zb);
 
 extern zio_t *zio_write(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp,
     struct abd *data, uint64_t size, uint64_t psize, const zio_prop_t *zp,
     zio_done_func_t *ready, zio_done_func_t *children_ready,
     zio_done_func_t *physdone, zio_done_func_t *done,
-    void *priv, zio_priority_t priority, enum zio_flag flags,
+    void *priv, zio_priority_t priority, zio_flag_t flags,
     const zbookmark_phys_t *zb);
 
 extern zio_t *zio_rewrite(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp,
     struct abd *data, uint64_t size, zio_done_func_t *done, void *priv,
-    zio_priority_t priority, enum zio_flag flags, zbookmark_phys_t *zb);
+    zio_priority_t priority, zio_flag_t flags, zbookmark_phys_t *zb);
 
 extern void zio_write_override(zio_t *zio, blkptr_t *bp, int copies,
     boolean_t nopwrite);
@@ -558,27 +562,27 @@ extern void zio_free(spa_t *spa, uint64_t txg, const blkptr_t *bp);
 
 extern zio_t *zio_claim(zio_t *pio, spa_t *spa, uint64_t txg,
     const blkptr_t *bp,
-    zio_done_func_t *done, void *priv, enum zio_flag flags);
+    zio_done_func_t *done, void *priv, zio_flag_t flags);
 
 extern zio_t *zio_ioctl(zio_t *pio, spa_t *spa, vdev_t *vd, int cmd,
-    zio_done_func_t *done, void *priv, enum zio_flag flags);
+    zio_done_func_t *done, void *priv, zio_flag_t flags);
 
 extern zio_t *zio_trim(zio_t *pio, vdev_t *vd, uint64_t offset, uint64_t size,
     zio_done_func_t *done, void *priv, zio_priority_t priority,
-    enum zio_flag flags, enum trim_flag trim_flags);
+    zio_flag_t flags, enum trim_flag trim_flags);
 
 extern zio_t *zio_read_phys(zio_t *pio, vdev_t *vd, uint64_t offset,
     uint64_t size, struct abd *data, int checksum,
     zio_done_func_t *done, void *priv, zio_priority_t priority,
-    enum zio_flag flags, boolean_t labels);
+    zio_flag_t flags, boolean_t labels);
 
 extern zio_t *zio_write_phys(zio_t *pio, vdev_t *vd, uint64_t offset,
     uint64_t size, struct abd *data, int checksum,
     zio_done_func_t *done, void *priv, zio_priority_t priority,
-    enum zio_flag flags, boolean_t labels);
+    zio_flag_t flags, boolean_t labels);
 
 extern zio_t *zio_free_sync(zio_t *pio, spa_t *spa, uint64_t txg,
-    const blkptr_t *bp, enum zio_flag flags);
+    const blkptr_t *bp, zio_flag_t flags);
 
 extern int zio_alloc_zil(spa_t *spa, objset_t *os, uint64_t txg,
     blkptr_t *new_bp, uint64_t size, boolean_t *slog);
@@ -611,12 +615,12 @@ extern void zio_resubmit_stage_async(void *);
 
 extern zio_t *zio_vdev_child_io(zio_t *zio, blkptr_t *bp, vdev_t *vd,
     uint64_t offset, struct abd *data, uint64_t size, int type,
-    zio_priority_t priority, enum zio_flag flags,
+    zio_priority_t priority, zio_flag_t flags,
     zio_done_func_t *done, void *priv);
 
 extern zio_t *zio_vdev_delegated_io(vdev_t *vd, uint64_t offset,
     struct abd *data, uint64_t size, zio_type_t type, zio_priority_t priority,
-    enum zio_flag flags, zio_done_func_t *done, void *priv);
+    zio_flag_t flags, zio_done_func_t *done, void *priv);
 
 extern void zio_vdev_io_bypass(zio_t *zio);
 extern void zio_vdev_io_reissue(zio_t *zio);
diff --git a/module/os/linux/zfs/vdev_disk.c b/module/os/linux/zfs/vdev_disk.c
index 349ef392dc0a..11ed3ea6f4e0 100644
--- a/module/os/linux/zfs/vdev_disk.c
+++ b/module/os/linux/zfs/vdev_disk.c
@@ -173,7 +173,7 @@ vdev_disk_error(zio_t *zio)
 	 * which is safe from any context.
 	 */
 	printk(KERN_WARNING "zio pool=%s vdev=%s error=%d type=%d "
-	    "offset=%llu size=%llu flags=%x\n", spa_name(zio->io_spa),
+	    "offset=%llu size=%llu flags=%llu\n", spa_name(zio->io_spa),
 	    zio->io_vd->vdev_path, zio->io_error, zio->io_type,
 	    (u_longlong_t)zio->io_offset, (u_longlong_t)zio->io_size,
 	    zio->io_flags);
diff --git a/module/zfs/dmu.c b/module/zfs/dmu.c
index 4f5dbfdde015..45304e7ddf7a 100644
--- a/module/zfs/dmu.c
+++ b/module/zfs/dmu.c
@@ -1436,7 +1436,7 @@ dmu_return_arcbuf(arc_buf_t *buf)
  */
 int
 dmu_lightweight_write_by_dnode(dnode_t *dn, uint64_t offset, abd_t *abd,
-    const zio_prop_t *zp, enum zio_flag flags, dmu_tx_t *tx)
+    const zio_prop_t *zp, zio_flag_t flags, dmu_tx_t *tx)
 {
 	dbuf_dirty_record_t *dr =
 	    dbuf_dirty_lightweight(dn, dbuf_whichblock(dn, 0, offset), tx);
diff --git a/module/zfs/dmu_objset.c b/module/zfs/dmu_objset.c
index b8fcbdf487d0..c17c829a04d8 100644
--- a/module/zfs/dmu_objset.c
+++ b/module/zfs/dmu_objset.c
@@ -482,7 +482,7 @@ dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp,
 		arc_flags_t aflags = ARC_FLAG_WAIT;
 		zbookmark_phys_t zb;
 		int size;
-		enum zio_flag zio_flags = ZIO_FLAG_CANFAIL;
+		zio_flag_t zio_flags = ZIO_FLAG_CANFAIL;
 		SET_BOOKMARK(&zb, ds ? ds->ds_object : DMU_META_OBJSET,
 		    ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID);
 
diff --git a/module/zfs/dmu_recv.c b/module/zfs/dmu_recv.c
index a9e4a6745905..9f43ffe1e856 100644
--- a/module/zfs/dmu_recv.c
+++ b/module/zfs/dmu_recv.c
@@ -1344,7 +1344,7 @@ do_corrective_recv(struct receive_writer_arg *rwa, struct drr_write *drrw,
 	dnode_t *dn;
 	abd_t *abd = rrd->abd;
 	zio_cksum_t bp_cksum = bp->blk_cksum;
-	enum zio_flag flags = ZIO_FLAG_SPECULATIVE |
+	zio_flag_t flags = ZIO_FLAG_SPECULATIVE |
 	    ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_RETRY | ZIO_FLAG_CANFAIL;
 
 	if (rwa->raw)
@@ -2186,7 +2186,7 @@ flush_write_batch_impl(struct receive_writer_arg *rwa)
 			zio_prop_t zp;
 			dmu_write_policy(rwa->os, dn, 0, 0, &zp);
 
-			enum zio_flag zio_flags = 0;
+			zio_flag_t zio_flags = 0;
 
 			if (rwa->raw) {
 				zp.zp_encrypt = B_TRUE;
diff --git a/module/zfs/dmu_send.c b/module/zfs/dmu_send.c
index 6e0057bb9ea8..8c96a862762f 100644
--- a/module/zfs/dmu_send.c
+++ b/module/zfs/dmu_send.c
@@ -934,7 +934,7 @@ do_dump(dmu_send_cookie_t *dscp, struct send_range *range)
 		ASSERT3U(range->start_blkid + 1, ==, range->end_blkid);
 		if (BP_GET_TYPE(bp) == DMU_OT_SA) {
 			arc_flags_t aflags = ARC_FLAG_WAIT;
-			enum zio_flag zioflags = ZIO_FLAG_CANFAIL;
+			zio_flag_t zioflags = ZIO_FLAG_CANFAIL;
 
 			if (dscp->dsc_featureflags & DMU_BACKUP_FEATURE_RAW) {
 				ASSERT(BP_IS_PROTECTED(bp));
@@ -1653,7 +1653,7 @@ issue_data_read(struct send_reader_thread_arg *srta, struct send_range *range)
 	    !split_large_blocks && !BP_SHOULD_BYTESWAP(bp) &&
 	    !BP_IS_EMBEDDED(bp) && !DMU_OT_IS_METADATA(BP_GET_TYPE(bp));
 
-	enum zio_flag zioflags = ZIO_FLAG_CANFAIL;
+	zio_flag_t zioflags = ZIO_FLAG_CANFAIL;
 
 	if (srta->featureflags & DMU_BACKUP_FEATURE_RAW) {
 		zioflags |= ZIO_FLAG_RAW;
diff --git a/module/zfs/dmu_traverse.c b/module/zfs/dmu_traverse.c
index d712133cd789..377634c72bba 100644
--- a/module/zfs/dmu_traverse.c
+++ b/module/zfs/dmu_traverse.c
@@ -671,7 +671,7 @@ traverse_impl(spa_t *spa, dsl_dataset_t *ds, uint64_t objset, blkptr_t *rootbp,
 
 	/* See comment on ZIL traversal in dsl_scan_visitds. */
 	if (ds != NULL && !ds->ds_is_snapshot && !BP_IS_HOLE(rootbp)) {
-		enum zio_flag zio_flags = ZIO_FLAG_CANFAIL;
+		zio_flag_t zio_flags = ZIO_FLAG_CANFAIL;
 		uint32_t flags = ARC_FLAG_WAIT;
 		objset_phys_t *osp;
 		arc_buf_t *buf;
diff --git a/module/zfs/vdev_queue.c b/module/zfs/vdev_queue.c
index d3777897e5b0..ec55674393ce 100644
--- a/module/zfs/vdev_queue.c
+++ b/module/zfs/vdev_queue.c
@@ -605,7 +605,7 @@ vdev_queue_aggregate(vdev_queue_t *vq, zio_t *zio)
 	int maxblocksize;
 	boolean_t stretch = B_FALSE;
 	avl_tree_t *t = vdev_queue_type_tree(vq, zio->io_type);
-	enum zio_flag flags = zio->io_flags & ZIO_FLAG_AGG_INHERIT;
+	zio_flag_t flags = zio->io_flags & ZIO_FLAG_AGG_INHERIT;
 	uint64_t next_offset;
 	abd_t *abd;
 
diff --git a/module/zfs/zil.c b/module/zfs/zil.c
index f26cc52613ea..6bb99c4b1cdf 100644
--- a/module/zfs/zil.c
+++ b/module/zfs/zil.c
@@ -237,7 +237,7 @@ static int
 zil_read_log_block(zilog_t *zilog, boolean_t decrypt, const blkptr_t *bp,
     blkptr_t *nbp, void *dst, char **end)
 {
-	enum zio_flag zio_flags = ZIO_FLAG_CANFAIL;
+	zio_flag_t zio_flags = ZIO_FLAG_CANFAIL;
 	arc_flags_t aflags = ARC_FLAG_WAIT;
 	arc_buf_t *abuf = NULL;
 	zbookmark_phys_t zb;
@@ -315,7 +315,7 @@ zil_read_log_block(zilog_t *zilog, boolean_t decrypt, const blkptr_t *bp,
 static int
 zil_read_log_data(zilog_t *zilog, const lr_write_t *lr, void *wbuf)
 {
-	enum zio_flag zio_flags = ZIO_FLAG_CANFAIL;
+	zio_flag_t zio_flags = ZIO_FLAG_CANFAIL;
 	const blkptr_t *bp = &lr->lr_blkptr;
 	arc_flags_t aflags = ARC_FLAG_WAIT;
 	arc_buf_t *abuf = NULL;
diff --git a/module/zfs/zio.c b/module/zfs/zio.c
index 3f6847a236ef..928e28813931 100644
--- a/module/zfs/zio.c
+++ b/module/zfs/zio.c
@@ -512,8 +512,9 @@ zio_decrypt(zio_t *zio, abd_t *data, uint64_t size)
 
 	/*
 	 * If this is an authenticated block, just check the MAC. It would be
-	 * nice to separate this out into its own flag, but for the moment
-	 * enum zio_flag is out of bits.
+	 * nice to separate this out into its own flag, but when this was done,
+	 * we had run out of bits in what is now zio_flag_t. Future cleanup
+	 * could make this a flag bit.
 	 */
 	if (BP_IS_AUTHENTICATED(bp)) {
 		if (ot == DMU_OT_OBJSET) {
@@ -802,7 +803,7 @@ static zio_t *
 zio_create(zio_t *pio, spa_t *spa, uint64_t txg, const blkptr_t *bp,
     abd_t *data, uint64_t lsize, uint64_t psize, zio_done_func_t *done,
     void *private, zio_type_t type, zio_priority_t priority,
-    enum zio_flag flags, vdev_t *vd, uint64_t offset,
+    zio_flag_t flags, vdev_t *vd, uint64_t offset,
     const zbookmark_phys_t *zb, enum zio_stage stage,
     enum zio_stage pipeline)
 {
@@ -901,7 +902,7 @@ zio_destroy(zio_t *zio)
 
 zio_t *
 zio_null(zio_t *pio, spa_t *spa, vdev_t *vd, zio_done_func_t *done,
-    void *private, enum zio_flag flags)
+    void *private, zio_flag_t flags)
 {
 	zio_t *zio;
 
@@ -913,7 +914,7 @@ zio_null(zio_t *pio, spa_t *spa, vdev_t *vd, zio_done_func_t *done,
 }
 
 zio_t *
-zio_root(spa_t *spa, zio_done_func_t *done, void *private, enum zio_flag flags)
+zio_root(spa_t *spa, zio_done_func_t *done, void *private, zio_flag_t flags)
 {
 	return (zio_null(NULL, spa, NULL, done, private, flags));
 }
@@ -1099,7 +1100,7 @@ zfs_dva_valid(spa_t *spa, const dva_t *dva, const blkptr_t *bp)
 zio_t *
 zio_read(zio_t *pio, spa_t *spa, const blkptr_t *bp,
     abd_t *data, uint64_t size, zio_done_func_t *done, void *private,
-    zio_priority_t priority, enum zio_flag flags, const zbookmark_phys_t *zb)
+    zio_priority_t priority, zio_flag_t flags, const zbookmark_phys_t *zb)
 {
 	zio_t *zio;
 
@@ -1117,7 +1118,7 @@ zio_write(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp,
     abd_t *data, uint64_t lsize, uint64_t psize, const zio_prop_t *zp,
     zio_done_func_t *ready, zio_done_func_t *children_ready,
     zio_done_func_t *physdone, zio_done_func_t *done,
-    void *private, zio_priority_t priority, enum zio_flag flags,
+    void *private, zio_priority_t priority, zio_flag_t flags,
     const zbookmark_phys_t *zb)
 {
 	zio_t *zio;
@@ -1160,7 +1161,7 @@ zio_write(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp,
 zio_t *
 zio_rewrite(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp, abd_t *data,
     uint64_t size, zio_done_func_t *done, void *private,
-    zio_priority_t priority, enum zio_flag flags, zbookmark_phys_t *zb)
+    zio_priority_t priority, zio_flag_t flags, zbookmark_phys_t *zb)
 {
 	zio_t *zio;
 
@@ -1233,7 +1234,7 @@ zio_free(spa_t *spa, uint64_t txg, const blkptr_t *bp)
  */
 zio_t *
 zio_free_sync(zio_t *pio, spa_t *spa, uint64_t txg, const blkptr_t *bp,
-    enum zio_flag flags)
+    zio_flag_t flags)
 {
 	ASSERT(!BP_IS_HOLE(bp));
 	ASSERT(spa_syncing_txg(spa) == txg);
@@ -1266,7 +1267,7 @@ zio_free_sync(zio_t *pio, spa_t *spa, uint64_t txg, const blkptr_t *bp,
 
 zio_t *
 zio_claim(zio_t *pio, spa_t *spa, uint64_t txg, const blkptr_t *bp,
-    zio_done_func_t *done, void *private, enum zio_flag flags)
+    zio_done_func_t *done, void *private, zio_flag_t flags)
 {
 	zio_t *zio;
 
@@ -1303,7 +1304,7 @@ zio_claim(zio_t *pio, spa_t *spa, uint64_t txg, const blkptr_t *bp,
 
 zio_t *
 zio_ioctl(zio_t *pio, spa_t *spa, vdev_t *vd, int cmd,
-    zio_done_func_t *done, void *private, enum zio_flag flags)
+    zio_done_func_t *done, void *private, zio_flag_t flags)
 {
 	zio_t *zio;
 	int c;
@@ -1328,7 +1329,7 @@ zio_ioctl(zio_t *pio, spa_t *spa, vdev_t *vd, int cmd,
 zio_t *
 zio_trim(zio_t *pio, vdev_t *vd, uint64_t offset, uint64_t size,
     zio_done_func_t *done, void *private, zio_priority_t priority,
-    enum zio_flag flags, enum trim_flag trim_flags)
+    zio_flag_t flags, enum trim_flag trim_flags)
 {
 	zio_t *zio;
 
@@ -1348,7 +1349,7 @@ zio_trim(zio_t *pio, vdev_t *vd, uint64_t offset, uint64_t size,
 zio_t *
 zio_read_phys(zio_t *pio, vdev_t *vd, uint64_t offset, uint64_t size,
     abd_t *data, int checksum, zio_done_func_t *done, void *private,
-    zio_priority_t priority, enum zio_flag flags, boolean_t labels)
+    zio_priority_t priority, zio_flag_t flags, boolean_t labels)
 {
 	zio_t *zio;
 
@@ -1369,7 +1370,7 @@ zio_read_phys(zio_t *pio, vdev_t *vd, uint64_t offset, uint64_t size,
 zio_t *
 zio_write_phys(zio_t *pio, vdev_t *vd, uint64_t offset, uint64_t size,
     abd_t *data, int checksum, zio_done_func_t *done, void *private,
-    zio_priority_t priority, enum zio_flag flags, boolean_t labels)
+    zio_priority_t priority, zio_flag_t flags, boolean_t labels)
 {
 	zio_t *zio;
 
@@ -1406,7 +1407,7 @@ zio_write_phys(zio_t *pio, vdev_t *vd, uint64_t offset, uint64_t size,
 zio_t *
 zio_vdev_child_io(zio_t *pio, blkptr_t *bp, vdev_t *vd, uint64_t offset,
     abd_t *data, uint64_t size, int type, zio_priority_t priority,
-    enum zio_flag flags, zio_done_func_t *done, void *private)
+    zio_flag_t flags, zio_done_func_t *done, void *private)
 {
 	enum zio_stage pipeline = ZIO_VDEV_CHILD_PIPELINE;
 	zio_t *zio;
@@ -1480,7 +1481,7 @@ zio_vdev_child_io(zio_t *pio, blkptr_t *bp, vdev_t *vd, uint64_t offset,
 
 zio_t *
 zio_vdev_delegated_io(vdev_t *vd, uint64_t offset, abd_t *data, uint64_t size,
-    zio_type_t type, zio_priority_t priority, enum zio_flag flags,
+    zio_type_t type, zio_priority_t priority, zio_flag_t flags,
     zio_done_func_t *done, void *private)
 {
 	zio_t *zio;
@@ -2030,7 +2031,7 @@ zio_deadman_impl(zio_t *pio, int ziodepth)
 		    "delta=%llu queued=%llu io=%llu "
 		    "path=%s "
 		    "last=%llu type=%d "
-		    "priority=%d flags=0x%x stage=0x%x "
+		    "priority=%d flags=0x%llx stage=0x%x "
 		    "pipeline=0x%x pipeline-trace=0x%x "
 		    "objset=%llu object=%llu "
 		    "level=%llu blkid=%llu "
@@ -2040,8 +2041,8 @@ zio_deadman_impl(zio_t *pio, int ziodepth)
 		    (u_longlong_t)delta, pio->io_delta, pio->io_delay,
 		    vd ? vd->vdev_path : "NULL",
 		    vq ? vq->vq_io_complete_ts : 0, pio->io_type,
-		    pio->io_priority, pio->io_flags, pio->io_stage,
-		    pio->io_pipeline, pio->io_pipeline_trace,
+		    pio->io_priority, (u_longlong_t)pio->io_flags,
+		    pio->io_stage, pio->io_pipeline, pio->io_pipeline_trace,
 		    (u_longlong_t)zb->zb_objset, (u_longlong_t)zb->zb_object,
 		    (u_longlong_t)zb->zb_level, (u_longlong_t)zb->zb_blkid,
 		    (u_longlong_t)pio->io_offset, (u_longlong_t)pio->io_size,