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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>
This commit is contained in:
Jaegeuk Kim 2013-09-03 09:46:45 +09:00
parent 749ebfd174
commit c34e333fd5
1 changed files with 2 additions and 1 deletions
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3
fs/f2fs/segment.h
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@ -453,7 +453,8 @@ static inline int reserved_sections(struct f2fs_sb_info *sbi)
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)