Commit 6cac3759 authored Apr 28, 2013 by Haicheng Li Committed by Jaegeuk Kim Apr 30, 2013

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>

parent afcb7ca0

fs/f2fs/node.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -244,7 +244,7 @@ static int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink)
		{
		struct f2fs_nm_info *nm_i = NM_I(sbi);

		if (nm_i->nat_cnt < 2 * NM_WOUT_THRESHOLD)
		if (nm_i->nat_cnt <= NM_WOUT_THRESHOLD)
		return 0;

		write_lock(&nm_i->nat_tree_lock);

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