From e3fb1b794b5f0c9f9b65707ce4e6be264a9c60f8 Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Mon, 27 Oct 2014 13:54:27 -0700
Subject: f2fs: do not discard data protected by the previous checkpoint
We should not discard any data protected by the previous checkpoint all
the time.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
fs/f2fs/segment.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
(limited to 'fs/f2fs')
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index d391a5913c79..06dda733f958 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -517,7 +517,7 @@ static void add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc)
/* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */
for (i = 0; i < entries; i++)
- dmap[i] = (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i];
+ dmap[i] = ~(cur_map[i] | ckpt_map[i]);
while (force || SM_I(sbi)->nr_discards <= SM_I(sbi)->max_discards) {
start = __find_rev_next_bit(dmap, max_blocks, end + 1);
--
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