LU-2850 kernel: 3.8 upstream removes vmtruncate()

[fs/lustre-release.git] / lustre / llite / vvp_io.c

diff --git a/lustre/llite/vvp_io.c b/lustre/llite/vvp_io.c
index 562c875..7aded2e 100644 (file)
--- a/lustre/llite/vvp_io.c
+++ b/lustre/llite/vvp_io.c
@@ -358,13 +358,22 @@ static int vvp_io_setattr_lock(const struct lu_env *env,
 static int vvp_do_vmtruncate(struct inode *inode, size_t size)
 {
        int     result;
+       loff_t oldsize;
+
        /*
         * Only ll_inode_size_lock is taken at this level.
         */
        ll_inode_size_lock(inode);
-       result = vmtruncate(inode, size);
-       ll_inode_size_unlock(inode);
+       result = inode_newsize_ok(inode, size);
+       if (result < 0) {
+               ll_inode_size_unlock(inode);
+               return result;
+       }
+       oldsize = inode->i_size;
+       i_size_write(inode, size);
 
+       truncate_pagecache(inode, oldsize, size);
+       ll_inode_size_unlock(inode);
        return result;
 }