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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Fengnan Chang <changfengnan@vivo.com>,
        Chao Yu <chao@kernel.org>, Jaegeuk Kim <jaegeuk@kernel.org>
Subject: [PATCH 5.16 0954/1039] f2fs: fix remove page failed in invalidate compress pages
Date:   Mon, 24 Jan 2022 19:45:43 +0100
Message-Id: <20220124184157.355359360@linuxfoundation.org>
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From: Fengnan Chang <changfengnan@vivo.com>

commit d1917865a7906baf6b687e15e8e6195a295a3992 upstream.

Since compress inode not a regular file, generic_error_remove_page in
f2fs_invalidate_compress_pages will always be failed, set compress
inode as a regular file to fix it.

Fixes: 6ce19aff0b8c ("f2fs: compress: add compress_inode to cache compressed blocks")
Signed-off-by: Fengnan Chang <changfengnan@vivo.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/f2fs/inode.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -516,6 +516,11 @@ make_now:
 	} else if (ino == F2FS_COMPRESS_INO(sbi)) {
 #ifdef CONFIG_F2FS_FS_COMPRESSION
 		inode->i_mapping->a_ops = &f2fs_compress_aops;
+		/*
+		 * generic_error_remove_page only truncates pages of regular
+		 * inode
+		 */
+		inode->i_mode |= S_IFREG;
 #endif
 		mapping_set_gfp_mask(inode->i_mapping,
 			GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE);