linux-kernel - [PATCH] f2fs: fix to correct freed section number during gc

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Date:	Tue, 22 Sep 2015 21:18:18 +0800
From:	Chao Yu <chao2.yu@...sung.com>
To:	Jaegeuk Kim <jaegeuk@...nel.org>
Cc:	linux-f2fs-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: [PATCH] f2fs: fix to correct freed section number during gc

We pass 'nfree' to has_not_enough_free_secs to check whether there is
enough free section, but 'nfree' indicates the number of segment gced,
should alter the value to section number.

Signed-off-by: Chao Yu <chao2.yu@...sung.com>
---
 fs/f2fs/gc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index e932740..7ad2a60 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -817,7 +817,8 @@ gc_more:
 	if (unlikely(f2fs_cp_error(sbi)))
 		goto stop;
 
-	if (gc_type == BG_GC && has_not_enough_free_secs(sbi, nfree)) {
+	if (gc_type == BG_GC &&
+		has_not_enough_free_secs(sbi, nfree / sbi->segs_per_sec)) {
 		gc_type = FG_GC;
 		if (__get_victim(sbi, &segno, gc_type) || prefree_segments(sbi))
 			write_checkpoint(sbi, &cpc);
@@ -839,7 +840,7 @@ gc_more:
 	if (gc_type == FG_GC)
 		sbi->cur_victim_sec = NULL_SEGNO;
 
-	if (has_not_enough_free_secs(sbi, nfree))
+	if (has_not_enough_free_secs(sbi, nfree / sbi->segs_per_sec))
 		goto gc_more;
 
 	if (gc_type == FG_GC)
-- 
2.5.2


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