Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  cfq-iosched: Allow RT requests to pre-empt ongoing BE timeslice
  block: add sysfs file for controlling io stats accounting
  Mark mandatory elevator functions in the biodoc.txt
  include/linux: Add bsg.h to the Kernel exported headers
  block: silently error an unsupported barrier bio
  block: Fix documentation for blkdev_issue_flush()
  block: add bio_rw_flagged() for testing bio->bi_rw
  block: seperate bio/request unplug and sync bits
  block: export SSD/non-rotational queue flag through sysfs
  Fix small typo in bio.h's documentation
  block: get rid of the manual directory counting in blktrace
  block: Allow empty integrity profile
  block: Remove obsolete BUG_ON
  block: Don't verify integrity metadata on read error

1 files changed, 28 insertions, 17 deletions

diff --git a/include/linux/bio.h b/include/linux/bio.h
index 18462c5b8fff..0942765cf8c0 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -144,7 +144,7 @@ struct bio {
  * bit 1 -- rw-ahead when set
  * bit 2 -- barrier
  *	Insert a serialization point in the IO queue, forcing previously
- *	submitted IO to be completed before this oen is issued.
+ *	submitted IO to be completed before this one is issued.
  * bit 3 -- synchronous I/O hint: the block layer will unplug immediately
  *	Note that this does NOT indicate that the IO itself is sync, just
  *	that the block layer will not postpone issue of this IO by plugging.
@@ -163,12 +163,33 @@ struct bio {
 #define BIO_RW		0	/* Must match RW in req flags (blkdev.h) */
 #define BIO_RW_AHEAD	1	/* Must match FAILFAST in req flags */
 #define BIO_RW_BARRIER	2
-#define BIO_RW_SYNC	3
-#define BIO_RW_META	4
-#define BIO_RW_DISCARD	5
-#define BIO_RW_FAILFAST_DEV		6
-#define BIO_RW_FAILFAST_TRANSPORT	7
-#define BIO_RW_FAILFAST_DRIVER		8
+#define BIO_RW_SYNCIO	3
+#define BIO_RW_UNPLUG	4
+#define BIO_RW_META	5
+#define BIO_RW_DISCARD	6
+#define BIO_RW_FAILFAST_DEV		7
+#define BIO_RW_FAILFAST_TRANSPORT	8
+#define BIO_RW_FAILFAST_DRIVER		9
+
+#define BIO_RW_SYNC	(BIO_RW_SYNCIO | BIO_RW_UNPLUG)
+
+#define bio_rw_flagged(bio, flag)	((bio)->bi_rw & (1 << (flag)))
+
+/*
+ * Old defines, these should eventually be replaced by direct usage of
+ * bio_rw_flagged()
+ */
+#define bio_barrier(bio)	bio_rw_flagged(bio, BIO_RW_BARRIER)
+#define bio_sync(bio)		bio_rw_flagged(bio, BIO_RW_SYNCIO)
+#define bio_unplug(bio)		bio_rw_flagged(bio, BIO_RW_UNPLUG)
+#define bio_failfast_dev(bio)	bio_rw_flagged(bio, BIO_RW_FAILFAST_DEV)
+#define bio_failfast_transport(bio)	\
+		bio_rw_flagged(bio, BIO_RW_FAILFAST_TRANSPORT)
+#define bio_failfast_driver(bio) 	\
+		bio_rw_flagged(bio, BIO_RW_FAILFAST_DRIVER)
+#define bio_rw_ahead(bio)	bio_rw_flagged(bio, BIO_RW_AHEAD)
+#define bio_rw_meta(bio)	bio_rw_flagged(bio, BIO_RW_META)
+#define bio_discard(bio)	bio_rw_flagged(bio, BIO_RW_DISCARD)
 
 /*
  * upper 16 bits of bi_rw define the io priority of this bio
@@ -193,15 +214,6 @@ struct bio {
 #define bio_offset(bio)		bio_iovec((bio))->bv_offset
 #define bio_segments(bio)	((bio)->bi_vcnt - (bio)->bi_idx)
 #define bio_sectors(bio)	((bio)->bi_size >> 9)
-#define bio_barrier(bio)	((bio)->bi_rw & (1 << BIO_RW_BARRIER))
-#define bio_sync(bio)		((bio)->bi_rw & (1 << BIO_RW_SYNC))
-#define bio_failfast_dev(bio)	((bio)->bi_rw &	(1 << BIO_RW_FAILFAST_DEV))
-#define bio_failfast_transport(bio)	\
-	((bio)->bi_rw & (1 << BIO_RW_FAILFAST_TRANSPORT))
-#define bio_failfast_driver(bio) ((bio)->bi_rw & (1 << BIO_RW_FAILFAST_DRIVER))
-#define bio_rw_ahead(bio)	((bio)->bi_rw & (1 << BIO_RW_AHEAD))
-#define bio_rw_meta(bio)	((bio)->bi_rw & (1 << BIO_RW_META))
-#define bio_discard(bio)	((bio)->bi_rw & (1 << BIO_RW_DISCARD))
 #define bio_empty_barrier(bio)	(bio_barrier(bio) && !bio_has_data(bio) && !bio_discard(bio))
 
 static inline unsigned int bio_cur_sectors(struct bio *bio)
@@ -312,7 +324,6 @@ struct bio_integrity_payload {
 	void			*bip_buf;	/* generated integrity data */
 	bio_end_io_t		*bip_end_io;	/* saved I/O completion fn */
 
-	int			bip_error;	/* saved I/O error */
 	unsigned int		bip_size;
 
 	unsigned short		bip_pool;	/* pool the ivec came from */