1 files changed, 8 insertions, 4 deletions

diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 5d9fb0e94156..dd27b1c7227f 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -34,6 +34,7 @@ enum bh_state_bits {
         BH_Write_EIO,   /* I/O error on write */
         BH_Ordered,     /* ordered write */
         BH_Eopnotsupp,  /* operation not supported (barrier) */
+        BH_Unwritten,   /* Buffer is allocated on disk but not written */
 
         BH_PrivateStart,/* not a state bit, but the first bit available
                          * for private allocation by other entities
@@ -126,6 +127,7 @@ BUFFER_FNS(Boundary, boundary)
 BUFFER_FNS(Write_EIO, write_io_error)
 BUFFER_FNS(Ordered, ordered)
 BUFFER_FNS(Eopnotsupp, eopnotsupp)
+BUFFER_FNS(Unwritten, unwritten)
 
 #define bh_offset(bh)           ((unsigned long)(bh)->b_data & ~PAGE_MASK)
 #define touch_buffer(bh)        mark_page_accessed(bh->b_page)
@@ -172,12 +174,14 @@ struct super_block *freeze_bdev(struct block_device *);
 void thaw_bdev(struct block_device *, struct super_block *);
 int fsync_super(struct super_block *);
 int fsync_no_super(struct block_device *);
-struct buffer_head *__find_get_block(struct block_device *, sector_t, int);
-struct buffer_head * __getblk(struct block_device *, sector_t, int);
+struct buffer_head *__find_get_block(struct block_device *bdev, sector_t block,
+                        unsigned size);
+struct buffer_head *__getblk(struct block_device *bdev, sector_t block,
+                        unsigned size);
 void __brelse(struct buffer_head *);
 void __bforget(struct buffer_head *);
-void __breadahead(struct block_device *, sector_t block, int size);
-struct buffer_head *__bread(struct block_device *, sector_t block, int size);
+void __breadahead(struct block_device *, sector_t block, unsigned int size);
+struct buffer_head *__bread(struct block_device *, sector_t block, unsigned size);
 struct buffer_head *alloc_buffer_head(gfp_t gfp_flags);
 void free_buffer_head(struct buffer_head * bh);
 void FASTCALL(unlock_buffer(struct buffer_head *bh));