linux-kernel - [PATCH 5.10 389/390] f2fs: fix wrong condition to trigger background checkpoint correctly

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Message-Id: <20221024113039.529510342@linuxfoundation.org>
Date:   Mon, 24 Oct 2022 13:33:06 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Chao Yu <chao@...nel.org>,
        Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH 5.10 389/390] f2fs: fix wrong condition to trigger background checkpoint correctly

From: Chao Yu <chao@...nel.org>

commit cd6d697a6e2013a0a85f8b261b16c8cfd50c1f5f upstream.

In f2fs_balance_fs_bg(), it needs to check both NAT_ENTRIES and INO_ENTRIES
memory usage to decide whether we should skip background checkpoint, otherwise
we may always skip checking INO_ENTRIES memory usage, so that INO_ENTRIES may
potentially cause high memory footprint.

Fixes: 493720a48543 ("f2fs: fix to avoid REQ_TIME and CP_TIME collision")
Signed-off-by: Chao Yu <chao@...nel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 fs/f2fs/segment.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -550,7 +550,7 @@ void f2fs_balance_fs_bg(struct f2fs_sb_i
 		goto do_sync;
 
 	/* checkpoint is the only way to shrink partial cached entries */
-	if (f2fs_available_free_memory(sbi, NAT_ENTRIES) ||
+	if (f2fs_available_free_memory(sbi, NAT_ENTRIES) &&
 		f2fs_available_free_memory(sbi, INO_ENTRIES))
 		return;