linux-kernel - [PATCH] f2fs: initialize page_array_entry slab only if compression feature is on

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Message-Id: <20220618175155.3908-1-chao@kernel.org>
Date:   Sun, 19 Jun 2022 01:51:55 +0800
From:   Chao Yu <chao@...nel.org>
To:     jaegeuk@...nel.org
Cc:     linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, Chao Yu <chao@...nel.org>,
        Chao Yu <chao.yu@...o.com>
Subject: [PATCH] f2fs: initialize page_array_entry slab only if compression feature is on

Otherwise, in image which doesn't support compression feature,
page_array_entry will be initialized w/o use.

Signed-off-by: Chao Yu <chao.yu@...o.com>
---
 fs/f2fs/compress.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
index 24824cd96f36..fa237e5c7173 100644
--- a/fs/f2fs/compress.c
+++ b/fs/f2fs/compress.c
@@ -1908,6 +1908,9 @@ int f2fs_init_page_array_cache(struct f2fs_sb_info *sbi)
 	dev_t dev = sbi->sb->s_bdev->bd_dev;
 	char slab_name[32];
 
+	if (!f2fs_sb_has_compression(sbi))
+		return 0;
+
 	sprintf(slab_name, "f2fs_page_array_entry-%u:%u", MAJOR(dev), MINOR(dev));
 
 	sbi->page_array_slab_size = sizeof(struct page *) <<
-- 
2.36.1