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Groups > linux.kernel > #1417723

[PATCH 4/7] f2fs: skip clean segment for gc

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If a segment in a section is clean or prefreed, we don't need to get its summary
and do gc.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/gc.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 67fd285..e1d274c 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -795,6 +795,10 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
 	}
 
 	for (segno = start_segno; segno < end_segno; segno++) {
+
+		if (get_valid_blocks(sbi, segno, 1) == 0)
+			continue;
+
 		/* find segment summary of victim */
 		sum_page = find_get_page(META_MAPPING(sbi),
 					GET_SUM_BLOCK(sbi, segno));
-- 
2.8.3

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[PATCH 1/7] f2fs: set mapping error for EIO Jaegeuk Kim <jaegeuk@kernel.org> - 2016-06-08 19:30 +0200
  [PATCH 4/7] f2fs: skip clean segment for gc Jaegeuk Kim <jaegeuk@kernel.org> - 2016-06-08 19:30 +0200
  [PATCH 7/7] f2fs: don't need to flush unlinked dentry pages Jaegeuk Kim <jaegeuk@kernel.org> - 2016-06-08 19:30 +0200
  [PATCH 5/7] f2fs: introduce force_lfs mount option Jaegeuk Kim <jaegeuk@kernel.org> - 2016-06-08 19:30 +0200

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