Fixed a xfstests failure.
From 400c722c2117660b83190c88e5442d63fbbffe6e Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Date: Mon, 10 Apr 2023 14:48:50 -0700
Subject: [PATCH] f2fs: refactor f2fs_gc to call checkpoint in urgent condition
The major change is to call checkpoint, if there's not enough space while having
some prefree segments in FG_GC case.
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>