3 files changed, 18 insertions, 7 deletions

diff --git a/fs/9p/v9fs_vfs.h b/fs/9p/v9fs_vfs.h
index f47c6bbb01b3..88418c419ea7 100644
--- a/fs/9p/v9fs_vfs.h
+++ b/fs/9p/v9fs_vfs.h
@@ -52,7 +52,7 @@ void v9fs_destroy_inode(struct inode *inode);
 #endif
 
 struct inode *v9fs_get_inode(struct super_block *sb, int mode);
-void v9fs_clear_inode(struct inode *inode);
+void v9fs_evict_inode(struct inode *inode);
 ino_t v9fs_qid2ino(struct p9_qid *qid);
 void v9fs_stat2inode(struct p9_wstat *, struct inode *, struct super_block *);
 void v9fs_stat2inode_dotl(struct p9_stat_dotl *, struct inode *);
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 6e94f3247cec..d97c34a24f7a 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -430,8 +430,10 @@ error:
  * @inode: inode to release
  *
  */
-void v9fs_clear_inode(struct inode *inode)
+void v9fs_evict_inode(struct inode *inode)
 {
+        truncate_inode_pages(inode->i_mapping, 0);
+        end_writeback(inode);
         filemap_fdatawrite(inode->i_mapping);
 
 #ifdef CONFIG_9P_FSCACHE
@@ -1209,10 +1211,19 @@ static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
         }
 
         retval = p9_client_wstat(fid, &wstat);
-        if (retval >= 0)
-                retval = inode_setattr(dentry->d_inode, iattr);
+        if (retval < 0)
+                return retval;
 
-        return retval;
+        if ((iattr->ia_valid & ATTR_SIZE) &&
+            iattr->ia_size != i_size_read(dentry->d_inode)) {
+                retval = vmtruncate(dentry->d_inode, iattr->ia_size);
+                if (retval)
+                        return retval;
+        }
+
+        setattr_copy(dentry->d_inode, iattr);
+        mark_inode_dirty(dentry->d_inode);
+        return 0;
 }
 
 /**
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 4b9ede0b41b7..f9311077de68 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -266,7 +266,7 @@ static const struct super_operations v9fs_super_ops = {
         .destroy_inode = v9fs_destroy_inode,
 #endif
         .statfs = simple_statfs,
-        .clear_inode = v9fs_clear_inode,
+        .evict_inode = v9fs_evict_inode,
         .show_options = generic_show_options,
         .umount_begin = v9fs_umount_begin,
 };
@@ -277,7 +277,7 @@ static const struct super_operations v9fs_super_ops_dotl = {
         .destroy_inode = v9fs_destroy_inode,
 #endif
         .statfs = v9fs_statfs,
-        .clear_inode = v9fs_clear_inode,
+        .evict_inode = v9fs_evict_inode,
         .show_options = generic_show_options,
         .umount_begin = v9fs_umount_begin,
 };