lift sb_start_write() out of ->write()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/cachefiles/rdwr.c b/fs/cachefiles/rdwr.c
index 480992259707..317f9ee9c991 100644
--- a/fs/cachefiles/rdwr.c
+++ b/fs/cachefiles/rdwr.c
@@ -962,12 +962,14 @@ int cachefiles_write_page(struct fscache_storage *op, struct page *page)
                         }
 
                         data = kmap(page);
+                        file_start_write(file);
                         old_fs = get_fs();
                         set_fs(KERNEL_DS);
                         ret = file->f_op->write(
                                 file, (const void __user *) data, len, &pos);
                         set_fs(old_fs);
                         kunmap(page);
+                        file_end_write(file);
                         if (ret != len)
                                 ret = -EIO;
                 }