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From: Eugen Hristev <eugen.hristev@collabora.com>
To: tytso@mit.edu,
	adilger.kernel@dilger.ca,
	linux-ext4@vger.kernel.org,
	jaegeuk@kernel.org,
	chao@kernel.org,
	linux-f2fs-devel@lists.sourceforge.net,
	linux-fsdevel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
	kernel@collabora.com,
	eugen.hristev@collabora.com,
	viro@zeniv.linux.org.uk,
	brauner@kernel.org,
	jack@suse.cz,
	krisman@suse.de,
	Gabriel Krisman Bertazi <krisman@collabora.com>,
	Eric Biggers <ebiggers@google.com>
Subject: [PATCH v12 8/8] f2fs: Move CONFIG_UNICODE defguards into the code flow
Date: Tue, 20 Feb 2024 10:52:35 +0200
Message-Id: <20240220085235.71132-9-eugen.hristev@collabora.com>
In-Reply-To: <20240220085235.71132-1-eugen.hristev@collabora.com>
References: <20240220085235.71132-1-eugen.hristev@collabora.com>
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From: Gabriel Krisman Bertazi <krisman@collabora.com>

Instead of a bunch of ifdefs, make the unicode built checks part of the
code flow where possible, as requested by Torvalds.

Reviewed-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
[eugen.hristev@collabora.com: port to 6.8-rc3]
Signed-off-by: Eugen Hristev <eugen.hristev@collabora.com>
---
 fs/f2fs/namei.c | 10 ++++------
 fs/f2fs/super.c |  8 ++++----
 2 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index ba11298b7837..c317bfd1c344 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -577,8 +577,7 @@ static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
 		goto out_iput;
 	}
 out_splice:
-#if IS_ENABLED(CONFIG_UNICODE)
-	if (!inode && IS_CASEFOLDED(dir)) {
+	if (IS_ENABLED(CONFIG_UNICODE) && !inode && IS_CASEFOLDED(dir)) {
 		/* Eventually we want to call d_add_ci(dentry, NULL)
 		 * for negative dentries in the encoding case as
 		 * well.  For now, prevent the negative dentry
@@ -587,7 +586,7 @@ static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
 		trace_f2fs_lookup_end(dir, dentry, ino, err);
 		return NULL;
 	}
-#endif
+
 	new = d_splice_alias(inode, dentry);
 	trace_f2fs_lookup_end(dir, !IS_ERR_OR_NULL(new) ? new : dentry,
 				ino, IS_ERR(new) ? PTR_ERR(new) : err);
@@ -640,16 +639,15 @@ static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
 	f2fs_delete_entry(de, page, dir, inode);
 	f2fs_unlock_op(sbi);
 
-#if IS_ENABLED(CONFIG_UNICODE)
 	/* VFS negative dentries are incompatible with Encoding and
 	 * Case-insensitiveness. Eventually we'll want avoid
 	 * invalidating the dentries here, alongside with returning the
 	 * negative dentries at f2fs_lookup(), when it is better
 	 * supported by the VFS for the CI case.
 	 */
-	if (IS_CASEFOLDED(dir))
+	if (IS_ENABLED(CONFIG_UNICODE) && IS_CASEFOLDED(dir))
 		d_invalidate(dentry);
-#endif
+
 	if (IS_DIRSYNC(dir))
 		f2fs_sync_fs(sbi->sb, 1);
 fail:
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 1b718bebfaa1..07c54981cb6b 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -312,7 +312,7 @@ struct kmem_cache *f2fs_cf_name_slab;
 static int __init f2fs_create_casefold_cache(void)
 {
 	f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name",
-							F2FS_NAME_LEN);
+						   F2FS_NAME_LEN);
 	return f2fs_cf_name_slab ? 0 : -ENOMEM;
 }
 
@@ -1360,13 +1360,13 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
 		return -EINVAL;
 	}
 #endif
-#if !IS_ENABLED(CONFIG_UNICODE)
-	if (f2fs_sb_has_casefold(sbi)) {
+
+	if (!IS_ENABLED(CONFIG_UNICODE) && f2fs_sb_has_casefold(sbi)) {
 		f2fs_err(sbi,
 			"Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE");
 		return -EINVAL;
 	}
-#endif
+
 	/*
 	 * The BLKZONED feature indicates that the drive was formatted with
 	 * zone alignment optimization. This is optional for host-aware
-- 
2.34.1