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>
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@ -453,7 +453,8 @@ static inline int reserved_sections(struct f2fs_sb_info *sbi)
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static inline bool need_SSR(struct f2fs_sb_info *sbi)
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{
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return (free_sections(sbi) < overprovision_sections(sbi));
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return ((prefree_segments(sbi) / sbi->segs_per_sec)
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+ free_sections(sbi) < overprovision_sections(sbi));
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}
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static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi, int freed)
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