tree ea597bcaf02e80a3b09d5e4a46c8d812c211d890
parent afcb7ca01f47b0481e0b248d1542d0934fa70767
author Haicheng Li <haicheng.li@linux.intel.com> 1367147766 +0800
committer Jaegeuk Kim <jaegeuk.kim@samsung.com> 1367291252 +0900

f2fs: fix inconsistent using of NM_WOUT_THRESHOLD

try_to_free_nats() is usually called with parameter nr_shrink as
	"nm_i->nat_cnt - NM_WOUT_THRESHOLD"
by flush_nat_entries() during checkpointing process.

However, this is inconsistent with the actual threshold check as
	"if (nm_i->nat_cnt < 2 * NM_WOUT_THRESHOLD)"
, which will ignore the free_nats requests when
	NM_WOUT_THRESHOLD < nm_i->nat_cnt < 2 * NM_WOUT_THRESHOLD

So fix the threshold check condition.

Signed-off-by: Haicheng Li <haicheng.li@linux.intel.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>