ceph: add new field max_file_size in ceph_fs_client
In order to not bother to VFS and other specific filesystems, we decided to do offset validation inside ceph kernel client, so just simply set sb->s_maxbytes to MAX_LFS_FILESIZE so that it can successfully pass VFS check. We add new field max_file_size in ceph_fs_client to store real file size limit and doing proper check based on it. Signed-off-by: NChengguang Xu <cgxu519@gmx.com> Reviewed-by: N"Yan, Zheng" <zyan@redhat.com> Signed-off-by: NIlya Dryomov <idryomov@gmail.com>
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