ocfs2: check ia_size limits in setattr

We have to manually check the requested truncate size as the check in
vmtruncate() comes too late for Ocfs2.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index b1ae4c754157..4ffa715be09c 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1028,6 +1028,11 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
         }
 
         if (size_change && attr->ia_size != i_size_read(inode)) {
+                if (attr->ia_size > sb->s_maxbytes) {
+                        status = -EFBIG;
+                        goto bail_unlock;
+                }
+
                 if (i_size_read(inode) > attr->ia_size)
                         status = ocfs2_truncate_file(inode, bh, attr->ia_size);
                 else