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f2fs: do not discard data protected by the previous checkpoint

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We should not discard any data protected by the previous checkpoint all
the time.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2014-10-27 13:54:27 -07:00
parent 427a45c8e2
commit e3fb1b794b
1 changed files with 1 additions and 1 deletions
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2
fs/f2fs/segment.c
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@ -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);