erofs: fix to add missing tracepoint in erofs_read_folio()

Commit 771c994 ("erofs: convert all uncompressed cases to iomap")
converts to use iomap interface, it removed trace_erofs_readpage()
tracepoint in the meantime, let's add it back.

Fixes: 771c994 ("erofs: convert all uncompressed cases to iomap")
Signed-off-by: Chao Yu <[email protected]>
Reviewed-by: Gao Xiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Gao Xiang <[email protected]>

Author: chaseyu

fs/erofs/data.c

@@ -351,6 +351,8 @@ int erofs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
  */
 static int erofs_read_folio(struct file *file, struct folio *folio)
 {
+	trace_erofs_read_folio(folio, true);
+
 	return iomap_read_folio(folio, &erofs_iomap_ops);
 }