linux-kernel - [PATCH 1/4] f2fs: flush journal nat entries for nat

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Message-Id: <20180706210903.77887-1-jaegeuk@kernel.org>
Date:   Fri,  6 Jul 2018 14:09:00 -0700
From:   Jaegeuk Kim <jaegeuk@...nel.org>
To:     linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Cc:     Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH 1/4] f2fs: flush journal nat entries for nat_bits during unmount

Let's flush journal nat entries for speed up in the next run.

Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
 fs/f2fs/node.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 29237aeca041..0f076fb0d828 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -2613,6 +2613,13 @@ void f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	nid_t set_idx = 0;
 	LIST_HEAD(sets);
 
+	/* during unmount, let's flush nat_bits before checking dirty_nat_cnt */
+	if (enabled_nat_bits(sbi, cpc)) {
+		down_write(&nm_i->nat_tree_lock);
+		remove_nats_in_journal(sbi);
+		up_write(&nm_i->nat_tree_lock);
+	}
+
 	if (!nm_i->dirty_nat_cnt)
 		return;
 
-- 
2.17.0.441.gb46fe60e1d-goog