1 files changed, 8 insertions, 1 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 580b513668fe..32477e8872d5 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -86,7 +86,9 @@ extern int dir_notify_enable;
 #define READ_META       (READ | (1 << BIO_RW_META))
 #define WRITE_SYNC      (WRITE | (1 << BIO_RW_SYNC))
 #define SWRITE_SYNC     (SWRITE | (1 << BIO_RW_SYNC))
-#define WRITE_BARRIER   ((1 << BIO_RW) | (1 << BIO_RW_BARRIER))
+#define WRITE_BARRIER   (WRITE | (1 << BIO_RW_BARRIER))
+#define DISCARD_NOBARRIER (1 << BIO_RW_DISCARD)
+#define DISCARD_BARRIER ((1 << BIO_RW_DISCARD) | (1 << BIO_RW_BARRIER))
 
 #define SEL_IN          1
 #define SEL_OUT         2
@@ -222,6 +224,7 @@ extern int dir_notify_enable;
 #define BLKTRACESTART _IO(0x12,116)
 #define BLKTRACESTOP _IO(0x12,117)
 #define BLKTRACETEARDOWN _IO(0x12,118)
+#define BLKDISCARD _IO(0x12,119)
 
 #define BMAP_IOCTL 1            /* obsolete - kept for compatibility */
 #define FIBMAP     _IO(0x00,1)  /* bmap access */
@@ -1682,6 +1685,7 @@ extern void chrdev_show(struct seq_file *,off_t);
 
 /* fs/block_dev.c */
 #define BDEVNAME_SIZE   32      /* Largest string for a blockdev identifier */
+#define BDEVT_SIZE      10      /* Largest string for MAJ:MIN for blkdev */
 
 #ifdef CONFIG_BLOCK
 #define BLKDEV_MAJOR_HASH_SIZE  255
@@ -1718,6 +1722,9 @@ extern int fs_may_remount_ro(struct super_block *);
  */
 #define bio_data_dir(bio)       ((bio)->bi_rw & 1)
 
+extern void check_disk_size_change(struct gendisk *disk,
+                                   struct block_device *bdev);
+extern int revalidate_disk(struct gendisk *);
 extern int check_disk_change(struct block_device *);
 extern int __invalidate_device(struct block_device *);
 extern int invalidate_partition(struct gendisk *, int);