f2fs: add quick mode of checkpoint=disable for QA
This mode returns mount() quickly with EAGAIN. We can trigger this by
shutdown(F2FS_GOING_DOWN_NEED_FSCK).
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index f99a583..37ac491 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -868,6 +868,9 @@
if (holes[DATA] > ovp || holes[NODE] > ovp)
return -EAGAIN;
+ if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK) &&
+ dirty_segments(sbi) > overprovision_segments(sbi))
+ return -EAGAIN;
return 0;
}