1 files changed, 8 insertions, 17 deletions

diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 16ed0284d780..68d1fe7b877c 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -32,8 +32,6 @@ enum bh_state_bits {
         BH_Delay,       /* Buffer is not yet allocated on disk */
         BH_Boundary,    /* Block is followed by a discontiguity */
         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_Quiet,       /* Buffer Error Prinks to be quiet */
 
@@ -125,8 +123,6 @@ BUFFER_FNS(Async_Write, async_write)
 BUFFER_FNS(Delay, delay)
 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)
@@ -183,6 +179,8 @@ void unlock_buffer(struct buffer_head *bh);
 void __lock_buffer(struct buffer_head *bh);
 void ll_rw_block(int, int, struct buffer_head * bh[]);
 int sync_dirty_buffer(struct buffer_head *bh);
+int __sync_dirty_buffer(struct buffer_head *bh, int rw);
+void write_dirty_buffer(struct buffer_head *bh, int rw);
 int submit_bh(int, struct buffer_head *);
 void write_boundary_block(struct block_device *bdev,
                         sector_t bblock, unsigned blocksize);
@@ -203,9 +201,10 @@ int block_write_full_page_endio(struct page *page, get_block_t *get_block,
 int block_read_full_page(struct page*, get_block_t*);
 int block_is_partially_uptodate(struct page *page, read_descriptor_t *desc,
                                 unsigned long from);
-int block_write_begin(struct file *, struct address_space *,
-                                loff_t, unsigned, unsigned,
-                                struct page **, void **, get_block_t*);
+int block_write_begin(struct address_space *mapping, loff_t pos, unsigned len,
+                unsigned flags, struct page **pagep, get_block_t *get_block);
+int __block_write_begin(struct page *page, loff_t pos, unsigned len,
+                get_block_t *get_block);
 int block_write_end(struct file *, struct address_space *,
                                 loff_t, unsigned, unsigned,
                                 struct page *, void *);
@@ -213,7 +212,6 @@ int generic_write_end(struct file *, struct address_space *,
                                 loff_t, unsigned, unsigned,
                                 struct page *, void *);
 void page_zero_new_buffers(struct page *page, unsigned from, unsigned to);
-int block_prepare_write(struct page*, unsigned, unsigned, get_block_t*);
 int cont_write_begin(struct file *, struct address_space *, loff_t,
                         unsigned, unsigned, struct page **, void **,
                         get_block_t *, loff_t *);
@@ -224,9 +222,7 @@ int block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
 void block_sync_page(struct page *);
 sector_t generic_block_bmap(struct address_space *, sector_t, get_block_t *);
 int block_truncate_page(struct address_space *, loff_t, get_block_t *);
-int file_fsync(struct file *, struct dentry *, int);
-int nobh_write_begin(struct file *, struct address_space *,
-                                loff_t, unsigned, unsigned,
+int nobh_write_begin(struct address_space *, loff_t, unsigned, unsigned,
                                 struct page **, void **, get_block_t*);
 int nobh_write_end(struct file *, struct address_space *,
                                 loff_t, unsigned, unsigned,
@@ -305,15 +301,10 @@ map_bh(struct buffer_head *bh, struct super_block *sb, sector_t block)
         bh->b_size = sb->s_blocksize;
 }
 
-/*
- * Calling wait_on_buffer() for a zero-ref buffer is illegal, so we call into
- * __wait_on_buffer() just to trip a debug check.  Because debug code in inline
- * functions is bloaty.
- */
 static inline void wait_on_buffer(struct buffer_head *bh)
 {
         might_sleep();
-        if (buffer_locked(bh) || atomic_read(&bh->b_count) == 0)
+        if (buffer_locked(bh))
                 __wait_on_buffer(bh);
 }