Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs...

[mv-sheeva.git] / include / linux / blkdev.h

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 98b45633a27e97e84dc4b4dd0b30c2a808d1c935..e23a86cae5ac9a328fd2fe1cc7c4eecc0741760c 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -463,7 +463,8 @@ struct request_queue
 
 #define QUEUE_FLAG_DEFAULT     ((1 << QUEUE_FLAG_IO_STAT) |            \
                                 (1 << QUEUE_FLAG_CLUSTER) |            \
-                                (1 << QUEUE_FLAG_STACKABLE))
+                                (1 << QUEUE_FLAG_STACKABLE)    |       \
+                                (1 << QUEUE_FLAG_SAME_COMP))
 
 static inline int queue_is_locked(struct request_queue *q)
 {
@@ -934,6 +935,7 @@ extern void blk_queue_alignment_offset(struct request_queue *q,
                                       unsigned int alignment);
 extern void blk_limits_io_min(struct queue_limits *limits, unsigned int min);
 extern void blk_queue_io_min(struct request_queue *q, unsigned int min);
+extern void blk_limits_io_opt(struct queue_limits *limits, unsigned int opt);
 extern void blk_queue_io_opt(struct request_queue *q, unsigned int opt);
 extern void blk_set_default_limits(struct queue_limits *lim);
 extern int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,
@@ -996,15 +998,18 @@ static inline struct request *blk_map_queue_find_tag(struct blk_queue_tag *bqt,
 }
 
 extern int blkdev_issue_flush(struct block_device *, sector_t *);
-extern int blkdev_issue_discard(struct block_device *,
-                               sector_t sector, sector_t nr_sects, gfp_t);
+#define DISCARD_FL_WAIT                0x01    /* wait for completion */
+#define DISCARD_FL_BARRIER     0x02    /* issue DISCARD_BARRIER request */
+extern int blkdev_issue_discard(struct block_device *, sector_t sector,
+               sector_t nr_sects, gfp_t, int flags);
 
 static inline int sb_issue_discard(struct super_block *sb,
                                   sector_t block, sector_t nr_blocks)
 {
        block <<= (sb->s_blocksize_bits - 9);
        nr_blocks <<= (sb->s_blocksize_bits - 9);
-       return blkdev_issue_discard(sb->s_bdev, block, nr_blocks, GFP_KERNEL);
+       return blkdev_issue_discard(sb->s_bdev, block, nr_blocks, GFP_KERNEL,
+                                   DISCARD_FL_BARRIER);
 }
 
 extern int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm);