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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, Sungjong Seo <sj1557.seo@samsung.com>,
        Chao Yu <chao@kernel.org>, Jaegeuk Kim <jaegeuk@kernel.org>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.15 664/779] f2fs: allow compression for mmap files in compress_mode=user
Date:   Mon, 15 Aug 2022 20:05:08 +0200
Message-Id: <20220815180405.736724412@linuxfoundation.org>
In-Reply-To: <20220815180337.130757997@linuxfoundation.org>
References: <20220815180337.130757997@linuxfoundation.org>
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From: Sungjong Seo <sj1557.seo@samsung.com>

[ Upstream commit 66d34fcbbe63ebd8584b792e0d741f6648100894 ]

Since commit e3c548323d32 ("f2fs: let's allow compression for mmap files"),
it has been allowed to compress mmap files. However, in compress_mode=user,
it is not allowed yet. To keep the same concept in both compress_modes,
f2fs_ioc_(de)compress_file() should also allow it.

Let's remove checking mmap files in f2fs_ioc_(de)compress_file() so that
the compression for mmap files is also allowed in compress_mode=user.

Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/f2fs/file.c | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index eacc80ac160f..0669464a942a 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -4011,11 +4011,6 @@ static int f2fs_ioc_decompress_file(struct file *filp, unsigned long arg)
 		goto out;
 	}
 
-	if (f2fs_is_mmap_file(inode)) {
-		ret = -EBUSY;
-		goto out;
-	}
-
 	ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
 	if (ret)
 		goto out;
@@ -4083,11 +4078,6 @@ static int f2fs_ioc_compress_file(struct file *filp, unsigned long arg)
 		goto out;
 	}
 
-	if (f2fs_is_mmap_file(inode)) {
-		ret = -EBUSY;
-		goto out;
-	}
-
 	ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
 	if (ret)
 		goto out;
-- 
2.35.1