get rid of cont_write_begin_newtrunc

Move the call to vmtruncate to get rid of accessive blocks to the callers
in preparation of the new truncate sequence and rename the non-truncating
version to cont_write_begin.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 20 deletions

diff --git a/fs/buffer.c b/fs/buffer.c
index 559daf76bca4..14529ec759b9 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2351,7 +2351,7 @@ out:
  * For moronic filesystems that do not allow holes in file.
  * We may have to extend the file.
  */
-int cont_write_begin_newtrunc(struct file *file, struct address_space *mapping,
+int cont_write_begin(struct file *file, struct address_space *mapping,
                         loff_t pos, unsigned len, unsigned flags,
                         struct page **pagep, void **fsdata,
                         get_block_t *get_block, loff_t *bytes)
@@ -2377,25 +2377,6 @@ int cont_write_begin_newtrunc(struct file *file, struct address_space *mapping,
 out:
         return err;
 }
-EXPORT_SYMBOL(cont_write_begin_newtrunc);
-
-int cont_write_begin(struct file *file, struct address_space *mapping,
-                        loff_t pos, unsigned len, unsigned flags,
-                        struct page **pagep, void **fsdata,
-                        get_block_t *get_block, loff_t *bytes)
-{
-        int ret;
-
-        ret = cont_write_begin_newtrunc(file, mapping, pos, len, flags,
-                                        pagep, fsdata, get_block, bytes);
-        if (unlikely(ret)) {
-                loff_t isize = mapping->host->i_size;
-                if (pos + len > isize)
-                        vmtruncate(mapping->host, isize);
-        }
-
-        return ret;
-}
 EXPORT_SYMBOL(cont_write_begin);
 
 int block_prepare_write(struct page *page, unsigned from, unsigned to,