linux-ext4 - [PATCH v2 2/9] f2fs: remove f2fs_dir

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Date:   Wed,  2 Dec 2020 18:20:34 -0800
From:   Eric Biggers <ebiggers@...nel.org>
To:     linux-fscrypt@...r.kernel.org
Cc:     linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        linux-mtd@...ts.infradead.org, linux-fsdevel@...r.kernel.org,
        Chao Yu <yuchao0@...wei.com>
Subject: [PATCH v2 2/9] f2fs: remove f2fs_dir_open()

From: Eric Biggers <ebiggers@...gle.com>

Since encrypted directories can be opened and searched without their key
being available, and each readdir and ->lookup() tries to set up the
key, trying to set up the key in ->open() too isn't really useful.

Just remove it so that directories don't need an ->open() method
anymore, and so that we eliminate a use of fscrypt_get_encryption_info()
(which I'd like to stop exporting to filesystems).

Reviewed-by: Chao Yu <yuchao0@...wei.com>
Signed-off-by: Eric Biggers <ebiggers@...gle.com>
---
 fs/f2fs/dir.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index 4b9ef8bbfa4a9..47bee953fc8d8 100644
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -1081,19 +1081,11 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx)
 	return err < 0 ? err : 0;
 }
 
-static int f2fs_dir_open(struct inode *inode, struct file *filp)
-{
-	if (IS_ENCRYPTED(inode))
-		return fscrypt_get_encryption_info(inode) ? -EACCES : 0;
-	return 0;
-}
-
 const struct file_operations f2fs_dir_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= generic_read_dir,
 	.iterate_shared	= f2fs_readdir,
 	.fsync		= f2fs_sync_file,
-	.open		= f2fs_dir_open,
 	.unlocked_ioctl	= f2fs_ioctl,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl   = f2fs_compat_ioctl,
-- 
2.29.2