Merge branch 'for-4.8/core' of git://git.kernel.dk/linux-block

Pull core block updates from Jens Axboe:

   - the big change is the cleanup from Mike Christie, cleaning up our
     uses of command types and modified flags.  This is what will throw
     some merge conflicts

   - regression fix for the above for btrfs, from Vincent

   - following up to the above, better packing of struct request from
     Christoph

   - a 2038 fix for blktrace from Arnd

   - a few trivial/spelling fixes from Bart Van Assche

   - a front merge check fix from Damien, which could cause issues on
     SMR drives

   - Atari partition fix from Gabriel

   - convert cfq to highres timers, since jiffies isn't granular enough
     for some devices these days.  From Jan and Jeff

   - CFQ priority boost fix idle classes, from me

   - cleanup series from Ming, improving our bio/bvec iteration

   - a direct issue fix for blk-mq from Omar

   - fix for plug merging not involving the IO scheduler, like we do for
     other types of merges.  From Tahsin

   - expose DAX type internally and through sysfs.  From Toshi and Yigal

* 'for-4.8/core' of git://git.kernel.dk/linux-block: (76 commits)
  block: Fix front merge check
  block: do not merge requests without consulting with io scheduler
  block: Fix spelling in a source code comment
  block: expose QUEUE_FLAG_DAX in sysfs
  block: add QUEUE_FLAG_DAX for devices to advertise their DAX support
  Btrfs: fix comparison in __btrfs_map_block()
  block: atari: Return early for unsupported sector size
  Doc: block: Fix a typo in queue-sysfs.txt
  cfq-iosched: Charge at least 1 jiffie instead of 1 ns
  cfq-iosched: Fix regression in bonnie++ rewrite performance
  cfq-iosched: Convert slice_resid from u64 to s64
  block: Convert fifo_time from ulong to u64
  blktrace: avoid using timespec
  block/blk-cgroup.c: Declare local symbols static
  block/bio-integrity.c: Add #include "blk.h"
  block/partition-generic.c: Remove a set-but-not-used variable
  block: bio: kill BIO_MAX_SIZE
  cfq-iosched: temporarily boost queue priority for idle classes
  block: drbd: avoid to use BIO_MAX_SIZE
  block: bio: remove BIO_MAX_SECTORS
  ...

include/trace/events/bcache.h

@@ -27,7 +27,8 @@ DECLARE_EVENT_CLASS(bcache_request,
 		__entry->sector		= bio->bi_iter.bi_sector;
 		__entry->orig_sector	= bio->bi_iter.bi_sector - 16;
 		__entry->nr_sector	= bio->bi_iter.bi_size >> 9;
-		blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+		blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
+			      bio->bi_iter.bi_size);
 	),
 
 	TP_printk("%d,%d %s %llu + %u (from %d,%d @ %llu)",
@@ -101,7 +102,8 @@ DECLARE_EVENT_CLASS(bcache_bio,
 		__entry->dev		= bio->bi_bdev->bd_dev;
 		__entry->sector		= bio->bi_iter.bi_sector;
 		__entry->nr_sector	= bio->bi_iter.bi_size >> 9;
-		blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+		blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
+			      bio->bi_iter.bi_size);
 	),
 
 	TP_printk("%d,%d  %s %llu + %u",
@@ -136,7 +138,8 @@ TRACE_EVENT(bcache_read,
 		__entry->dev		= bio->bi_bdev->bd_dev;
 		__entry->sector		= bio->bi_iter.bi_sector;
 		__entry->nr_sector	= bio->bi_iter.bi_size >> 9;
-		blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+		blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
+			      bio->bi_iter.bi_size);
 		__entry->cache_hit = hit;
 		__entry->bypass = bypass;
 	),
@@ -167,7 +170,8 @@ TRACE_EVENT(bcache_write,
 		__entry->inode		= inode;
 		__entry->sector		= bio->bi_iter.bi_sector;
 		__entry->nr_sector	= bio->bi_iter.bi_size >> 9;
-		blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+		blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
+			      bio->bi_iter.bi_size);
 		__entry->writeback = writeback;
 		__entry->bypass = bypass;
 	),

include/trace/events/block.h

@@ -84,7 +84,8 @@ DECLARE_EVENT_CLASS(block_rq_with_error,
 					0 : blk_rq_sectors(rq);
 		__entry->errors    = rq->errors;
 
-		blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
+		blk_fill_rwbs(__entry->rwbs, req_op(rq), rq->cmd_flags,
+			      blk_rq_bytes(rq));
 		blk_dump_cmd(__get_str(cmd), rq);
 	),
 
@@ -162,7 +163,7 @@ TRACE_EVENT(block_rq_complete,
 		__entry->nr_sector = nr_bytes >> 9;
 		__entry->errors    = rq->errors;
 
-		blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, nr_bytes);
+		blk_fill_rwbs(__entry->rwbs, req_op(rq), rq->cmd_flags, nr_bytes);
 		blk_dump_cmd(__get_str(cmd), rq);
 	),
 
@@ -198,7 +199,8 @@ DECLARE_EVENT_CLASS(block_rq,
 		__entry->bytes     = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
 					blk_rq_bytes(rq) : 0;
 
-		blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
+		blk_fill_rwbs(__entry->rwbs, req_op(rq), rq->cmd_flags,
+			      blk_rq_bytes(rq));
 		blk_dump_cmd(__get_str(cmd), rq);
 		memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 	),
@@ -272,7 +274,8 @@ TRACE_EVENT(block_bio_bounce,
 					  bio->bi_bdev->bd_dev : 0;
 		__entry->sector		= bio->bi_iter.bi_sector;
 		__entry->nr_sector	= bio_sectors(bio);
-		blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+		blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
+			      bio->bi_iter.bi_size);
 		memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 	),
 
@@ -310,7 +313,8 @@ TRACE_EVENT(block_bio_complete,
 		__entry->sector		= bio->bi_iter.bi_sector;
 		__entry->nr_sector	= bio_sectors(bio);
 		__entry->error		= error;
-		blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+		blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
+			      bio->bi_iter.bi_size);
 	),
 
 	TP_printk("%d,%d %s %llu + %u [%d]",
@@ -337,7 +341,8 @@ DECLARE_EVENT_CLASS(block_bio_merge,
 		__entry->dev		= bio->bi_bdev->bd_dev;
 		__entry->sector		= bio->bi_iter.bi_sector;
 		__entry->nr_sector	= bio_sectors(bio);
-		blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+		blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
+			      bio->bi_iter.bi_size);
 		memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 	),
 
@@ -404,7 +409,8 @@ TRACE_EVENT(block_bio_queue,
 		__entry->dev		= bio->bi_bdev->bd_dev;
 		__entry->sector		= bio->bi_iter.bi_sector;
 		__entry->nr_sector	= bio_sectors(bio);
-		blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+		blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
+			      bio->bi_iter.bi_size);
 		memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 	),
 
@@ -432,7 +438,7 @@ DECLARE_EVENT_CLASS(block_get_rq,
 		__entry->dev		= bio ? bio->bi_bdev->bd_dev : 0;
 		__entry->sector		= bio ? bio->bi_iter.bi_sector : 0;
 		__entry->nr_sector	= bio ? bio_sectors(bio) : 0;
-		blk_fill_rwbs(__entry->rwbs,
+		blk_fill_rwbs(__entry->rwbs, bio ? bio_op(bio) : 0,
 			      bio ? bio->bi_rw : 0, __entry->nr_sector);
 		memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
         ),
@@ -567,7 +573,8 @@ TRACE_EVENT(block_split,
 		__entry->dev		= bio->bi_bdev->bd_dev;
 		__entry->sector		= bio->bi_iter.bi_sector;
 		__entry->new_sector	= new_sector;
-		blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+		blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
+			      bio->bi_iter.bi_size);
 		memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 	),
 
@@ -610,7 +617,8 @@ TRACE_EVENT(block_bio_remap,
 		__entry->nr_sector	= bio_sectors(bio);
 		__entry->old_dev	= dev;
 		__entry->old_sector	= from;
-		blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+		blk_fill_rwbs(__entry->rwbs, bio_op(bio), bio->bi_rw,
+			      bio->bi_iter.bi_size);
 	),
 
 	TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
@@ -656,7 +664,8 @@ TRACE_EVENT(block_rq_remap,
 		__entry->old_dev	= dev;
 		__entry->old_sector	= from;
 		__entry->nr_bios	= blk_rq_count_bios(rq);
-		blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
+		blk_fill_rwbs(__entry->rwbs, req_op(rq), rq->cmd_flags,
+			      blk_rq_bytes(rq));
 	),
 
 	TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",

include/trace/events/f2fs.h

@@ -31,10 +31,9 @@ TRACE_DEFINE_ENUM(BG_GC);
 TRACE_DEFINE_ENUM(LFS);
 TRACE_DEFINE_ENUM(SSR);
 TRACE_DEFINE_ENUM(__REQ_RAHEAD);
-TRACE_DEFINE_ENUM(__REQ_WRITE);
 TRACE_DEFINE_ENUM(__REQ_SYNC);
 TRACE_DEFINE_ENUM(__REQ_NOIDLE);
-TRACE_DEFINE_ENUM(__REQ_FLUSH);
+TRACE_DEFINE_ENUM(__REQ_PREFLUSH);
 TRACE_DEFINE_ENUM(__REQ_FUA);
 TRACE_DEFINE_ENUM(__REQ_PRIO);
 TRACE_DEFINE_ENUM(__REQ_META);
@@ -56,17 +55,21 @@ TRACE_DEFINE_ENUM(CP_DISCARD);
 		{ IPU,		"IN-PLACE" },				\
 		{ OPU,		"OUT-OF-PLACE" })
 
-#define F2FS_BIO_MASK(t)	(t & (READA | WRITE_FLUSH_FUA))
+#define F2FS_BIO_FLAG_MASK(t)	(t & (READA | WRITE_FLUSH_FUA))
 #define F2FS_BIO_EXTRA_MASK(t)	(t & (REQ_META | REQ_PRIO))
 
-#define show_bio_type(type)	show_bio_base(type), show_bio_extra(type)
+#define show_bio_type(op, op_flags) show_bio_op(op),			\
+			show_bio_op_flags(op_flags), show_bio_extra(op_flags)
 
-#define show_bio_base(type)						\
-	__print_symbolic(F2FS_BIO_MASK(type),				\
+#define show_bio_op(op)							\
+	__print_symbolic(op,						\
 		{ READ, 		"READ" },			\
+		{ WRITE,		"WRITE" })
+
+#define show_bio_op_flags(flags)					\
+	__print_symbolic(F2FS_BIO_FLAG_MASK(flags),			\
 		{ READA, 		"READAHEAD" },			\
 		{ READ_SYNC, 		"READ_SYNC" },			\
-		{ WRITE, 		"WRITE" },			\
 		{ WRITE_SYNC, 		"WRITE_SYNC" },			\
 		{ WRITE_FLUSH,		"WRITE_FLUSH" },		\
 		{ WRITE_FUA, 		"WRITE_FUA" },			\
@@ -734,7 +737,8 @@ DECLARE_EVENT_CLASS(f2fs__submit_page_bio,
 		__field(pgoff_t, index)
 		__field(block_t, old_blkaddr)
 		__field(block_t, new_blkaddr)
-		__field(int, rw)
+		__field(int, op)
+		__field(int, op_flags)
 		__field(int, type)
 	),
 
@@ -744,17 +748,18 @@ DECLARE_EVENT_CLASS(f2fs__submit_page_bio,
 		__entry->index		= page->index;
 		__entry->old_blkaddr	= fio->old_blkaddr;
 		__entry->new_blkaddr	= fio->new_blkaddr;
-		__entry->rw		= fio->rw;
+		__entry->op		= fio->op;
+		__entry->op_flags	= fio->op_flags;
 		__entry->type		= fio->type;
 	),
 
 	TP_printk("dev = (%d,%d), ino = %lu, page_index = 0x%lx, "
-		"oldaddr = 0x%llx, newaddr = 0x%llx rw = %s%s, type = %s",
+		"oldaddr = 0x%llx, newaddr = 0x%llx rw = %s%si%s, type = %s",
 		show_dev_ino(__entry),
 		(unsigned long)__entry->index,
 		(unsigned long long)__entry->old_blkaddr,
 		(unsigned long long)__entry->new_blkaddr,
-		show_bio_type(__entry->rw),
+		show_bio_type(__entry->op, __entry->op_flags),
 		show_block_type(__entry->type))
 );
 
@@ -785,7 +790,8 @@ DECLARE_EVENT_CLASS(f2fs__submit_bio,
 
 	TP_STRUCT__entry(
 		__field(dev_t,	dev)
-		__field(int,	rw)
+		__field(int,	op)
+		__field(int,	op_flags)
 		__field(int,	type)
 		__field(sector_t,	sector)
 		__field(unsigned int,	size)
@@ -793,15 +799,16 @@ DECLARE_EVENT_CLASS(f2fs__submit_bio,
 
 	TP_fast_assign(
 		__entry->dev		= sb->s_dev;
-		__entry->rw		= fio->rw;
+		__entry->op		= fio->op;
+		__entry->op_flags	= fio->op_flags;
 		__entry->type		= fio->type;
 		__entry->sector		= bio->bi_iter.bi_sector;
 		__entry->size		= bio->bi_iter.bi_size;
 	),
 
-	TP_printk("dev = (%d,%d), %s%s, %s, sector = %lld, size = %u",
+	TP_printk("dev = (%d,%d), %s%s%s, %s, sector = %lld, size = %u",
 		show_dev(__entry),
-		show_bio_type(__entry->rw),
+		show_bio_type(__entry->op, __entry->op_flags),
 		show_block_type(__entry->type),
 		(unsigned long long)__entry->sector,
 		__entry->size)