f2fs: trigger GC when there are prefree segments
Previously, f2fs conducts SSR when free_sections() < overprovision_sections.
But, even though there are a lot of prefree segments, it can consider SSR only.
So, let's consider the number of prefree segments too for triggering SSR.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index 062424a..cd9bd93 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -453,7 +453,8 @@
static inline bool need_SSR(struct f2fs_sb_info *sbi)
{
- return (free_sections(sbi) < overprovision_sections(sbi));
+ return ((prefree_segments(sbi) / sbi->segs_per_sec)
+ + free_sections(sbi) < overprovision_sections(sbi));
}
static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi, int freed)