Tested-by: Tristan Ye <[email protected]> Tao Ma wrote: > During CoW, actually all the pages after i_size contains > garbage data, so don't read and duplicate them. > > Signed-off-by: Tao Ma <[email protected]> > --- > fs/ocfs2/refcounttree.c | 6 ++++++ > 1 files changed, 6 insertions(+), 0 deletions(-) > > diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c > index 1cf9cda..5e03db2 100644 > --- a/fs/ocfs2/refcounttree.c > +++ b/fs/ocfs2/refcounttree.c > @@ -2931,6 +2931,12 @@ static int ocfs2_duplicate_clusters_by_page(handle_t > *handle, > > offset = ((loff_t)cpos) << OCFS2_SB(sb)->s_clustersize_bits; > end = offset + (new_len << OCFS2_SB(sb)->s_clustersize_bits); > + /* > + * We only duplicate pages until we reach the page contains i_size - 1. > + * So trim 'end' to i_size. > + */ > + if (end > i_size_read(context->inode)) > + end = i_size_read(context->inode); > > while (offset < end) { > page_index = offset >> PAGE_CACHE_SHIFT;
_______________________________________________ Ocfs2-devel mailing list [email protected] http://oss.oracle.com/mailman/listinfo/ocfs2-devel
