erofs: fix small compressed files inlining

[platform/kernel/linux-starfive.git] / fs / erofs / zmap.c

diff --git a/fs/erofs/zmap.c b/fs/erofs/zmap.c
index 18d7fd1..361b1d6 100644 (file)
--- a/fs/erofs/zmap.c
+++ b/fs/erofs/zmap.c
@@ -630,6 +630,13 @@ static int z_erofs_do_map_blocks(struct inode *inode,
                if (endoff >= m.clusterofs) {
                        m.headtype = m.type;
                        map->m_la = (m.lcn << lclusterbits) | m.clusterofs;
+                       /*
+                        * For ztailpacking files, in order to inline data more
+                        * effectively, special EOF lclusters are now supported
+                        * which can have three parts at most.
+                        */
+                       if (ztailpacking && end > inode->i_size)
+                               end = inode->i_size;
                        break;
                }
                /* m.lcn should be >= 1 if endoff < m.clusterofs */