Merge tag 'v3.18-rc1' into patchwork

Linux 3.18-rc1

* tag 'v3.18-rc1': (9526 commits)
  Linux 3.18-rc1
  MAINTAINERS: corrected bcm2835 search
  Net: DSA: Fix checking for get_phy_flags function
  sparc64: Do not define thread fpregs save area as zero-length array.
  sparc64: Fix corrupted thread fault code.
  MAINTAINERS: Become the docs maintainer
  x86,kvm,vmx: Preserve CR4 across VM entry
  ipv6: fix a potential use after free in sit.c
  ipv6: fix a potential use after free in ip6_offload.c
  ipv4: fix a potential use after free in gre_offload.c
  tcp: fix build error if IPv6 is not enabled
  futex: Ensure get_futex_key_refs() always implies a barrier
  bna: fix skb->truesize underestimation
  net: dsa: add includes for ethtool and phy_fixed definitions
  openvswitch: Set flow-key members.
  netrom: use linux/uaccess.h
  dsa: Fix conversion from host device to mii bus
  tipc: fix bug in bundled buffer reception
  ipv6: introduce tcp_v6_iif()
  sfc: add support for skb->xmit_more
  ...

1 files changed, 31 insertions, 42 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 518b46555b80..0207a78a8d82 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -36,6 +36,7 @@ struct request;
 struct sg_io_hdr;
 struct bsg_job;
 struct blkcg_gq;
+struct blk_flush_queue;
 
 #define BLKDEV_MIN_RQ	4
 #define BLKDEV_MAX_RQ	128	/* Default maximum */
@@ -455,14 +456,7 @@ struct request_queue {
 	 */
 	unsigned int		flush_flags;
 	unsigned int		flush_not_queueable:1;
-	unsigned int		flush_queue_delayed:1;
-	unsigned int		flush_pending_idx:1;
-	unsigned int		flush_running_idx:1;
-	unsigned long		flush_pending_since;
-	struct list_head	flush_queue[2];
-	struct list_head	flush_data_in_flight;
-	struct request		*flush_rq;
-	spinlock_t		mq_flush_lock;
+	struct blk_flush_queue	*fq;
 
 	struct list_head	requeue_list;
 	spinlock_t		requeue_lock;
@@ -865,7 +859,7 @@ extern void blk_execute_rq_nowait(struct request_queue *, struct gendisk *,
 
 static inline struct request_queue *bdev_get_queue(struct block_device *bdev)
 {
-	return bdev->bd_disk->queue;
+	return bdev->bd_disk->queue;	/* this is never NULL */
 }
 
 /*
@@ -1285,10 +1279,9 @@ static inline int queue_alignment_offset(struct request_queue *q)
 static inline int queue_limit_alignment_offset(struct queue_limits *lim, sector_t sector)
 {
 	unsigned int granularity = max(lim->physical_block_size, lim->io_min);
-	unsigned int alignment = (sector << 9) & (granularity - 1);
+	unsigned int alignment = sector_div(sector, granularity >> 9) << 9;
 
-	return (granularity + lim->alignment_offset - alignment)
-		& (granularity - 1);
+	return (granularity + lim->alignment_offset - alignment) % granularity;
 }
 
 static inline int bdev_alignment_offset(struct block_device *bdev)
@@ -1464,32 +1457,31 @@ static inline uint64_t rq_io_start_time_ns(struct request *req)
 
 #if defined(CONFIG_BLK_DEV_INTEGRITY)
 
-#define INTEGRITY_FLAG_READ	2	/* verify data integrity on read */
-#define INTEGRITY_FLAG_WRITE	4	/* generate data integrity on write */
+enum blk_integrity_flags {
+	BLK_INTEGRITY_VERIFY		= 1 << 0,
+	BLK_INTEGRITY_GENERATE		= 1 << 1,
+	BLK_INTEGRITY_DEVICE_CAPABLE	= 1 << 2,
+	BLK_INTEGRITY_IP_CHECKSUM	= 1 << 3,
+};
 
-struct blk_integrity_exchg {
+struct blk_integrity_iter {
 	void			*prot_buf;
 	void			*data_buf;
-	sector_t		sector;
+	sector_t		seed;
 	unsigned int		data_size;
-	unsigned short		sector_size;
+	unsigned short		interval;
 	const char		*disk_name;
 };
 
-typedef void (integrity_gen_fn) (struct blk_integrity_exchg *);
-typedef int (integrity_vrfy_fn) (struct blk_integrity_exchg *);
-typedef void (integrity_set_tag_fn) (void *, void *, unsigned int);
-typedef void (integrity_get_tag_fn) (void *, void *, unsigned int);
+typedef int (integrity_processing_fn) (struct blk_integrity_iter *);
 
 struct blk_integrity {
-	integrity_gen_fn	*generate_fn;
-	integrity_vrfy_fn	*verify_fn;
-	integrity_set_tag_fn	*set_tag_fn;
-	integrity_get_tag_fn	*get_tag_fn;
+	integrity_processing_fn	*generate_fn;
+	integrity_processing_fn	*verify_fn;
 
 	unsigned short		flags;
 	unsigned short		tuple_size;
-	unsigned short		sector_size;
+	unsigned short		interval;
 	unsigned short		tag_size;
 
 	const char		*name;
@@ -1504,10 +1496,10 @@ extern int blk_integrity_compare(struct gendisk *, struct gendisk *);
 extern int blk_rq_map_integrity_sg(struct request_queue *, struct bio *,
 				   struct scatterlist *);
 extern int blk_rq_count_integrity_sg(struct request_queue *, struct bio *);
-extern int blk_integrity_merge_rq(struct request_queue *, struct request *,
-				  struct request *);
-extern int blk_integrity_merge_bio(struct request_queue *, struct request *,
-				   struct bio *);
+extern bool blk_integrity_merge_rq(struct request_queue *, struct request *,
+				   struct request *);
+extern bool blk_integrity_merge_bio(struct request_queue *, struct request *,
+				    struct bio *);
 
 static inline
 struct blk_integrity *bdev_get_integrity(struct block_device *bdev)
@@ -1520,12 +1512,9 @@ static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk)
 	return disk->integrity;
 }
 
-static inline int blk_integrity_rq(struct request *rq)
+static inline bool blk_integrity_rq(struct request *rq)
 {
-	if (rq->bio == NULL)
-		return 0;
-
-	return bio_integrity(rq->bio);
+	return rq->cmd_flags & REQ_INTEGRITY;
 }
 
 static inline void blk_queue_max_integrity_segments(struct request_queue *q,
@@ -1564,7 +1553,7 @@ static inline int blk_rq_map_integrity_sg(struct request_queue *q,
 }
 static inline struct blk_integrity *bdev_get_integrity(struct block_device *b)
 {
-	return 0;
+	return NULL;
 }
 static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk)
 {
@@ -1590,15 +1579,15 @@ static inline unsigned short queue_max_integrity_segments(struct request_queue *
 {
 	return 0;
 }
-static inline int blk_integrity_merge_rq(struct request_queue *rq,
-					 struct request *r1,
-					 struct request *r2)
+static inline bool blk_integrity_merge_rq(struct request_queue *rq,
+					  struct request *r1,
+					  struct request *r2)
 {
 	return 0;
 }
-static inline int blk_integrity_merge_bio(struct request_queue *rq,
-					  struct request *r,
-					  struct bio *b)
+static inline bool blk_integrity_merge_bio(struct request_queue *rq,
+					   struct request *r,
+					   struct bio *b)
 {
 	return 0;
 }