linux-kernel - [PATCH 1/2] libfs: export find_next

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Message-ID: <20250331-work-freeze-v1-1-6dfbe8253b9f@kernel.org>
Date: Mon, 31 Mar 2025 14:42:11 +0200
From: Christian Brauner <brauner@...nel.org>
To: linux-fsdevel@...r.kernel.org,
	jack@...e.cz,
	Ard Biesheuvel <ardb@...nel.org>
Cc: Christian Brauner <brauner@...nel.org>,
	linux-efi@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	James Bottomley <James.Bottomley@...senpartnership.com>,
	mcgrof@...nel.org,
	hch@...radead.org,
	david@...morbit.com,
	rafael@...nel.org,
	djwong@...nel.org,
	pavel@...nel.org,
	peterz@...radead.org,
	mingo@...hat.com,
	will@...nel.org,
	boqun.feng@...il.com
Subject: [PATCH 1/2] libfs: export find_next_child()

Export find_next_child() so it can be used by efivarfs.
Keep it internal for now. There's no reason to advertise this
kernel-wide.

Signed-off-by: Christian Brauner <brauner@...nel.org>
---
 fs/internal.h | 1 +
 fs/libfs.c    | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/internal.h b/fs/internal.h
index b9b3e29a73fd..b9949707a152 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -343,3 +343,4 @@ static inline bool path_mounted(const struct path *path)
 void file_f_owner_release(struct file *file);
 bool file_seek_cur_needs_f_lock(struct file *file);
 int statmount_mnt_idmap(struct mnt_idmap *idmap, struct seq_file *seq, bool uid_map);
+struct dentry *find_next_child(struct dentry *parent, struct dentry *prev);
diff --git a/fs/libfs.c b/fs/libfs.c
index 6393d7c49ee6..f2ef377d2665 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -583,7 +583,7 @@ const struct file_operations simple_offset_dir_operations = {
 	.fsync		= noop_fsync,
 };
 
-static struct dentry *find_next_child(struct dentry *parent, struct dentry *prev)
+struct dentry *find_next_child(struct dentry *parent, struct dentry *prev)
 {
 	struct dentry *child = NULL, *d;
 
@@ -603,6 +603,7 @@ static struct dentry *find_next_child(struct dentry *parent, struct dentry *prev
 	dput(prev);
 	return child;
 }
+EXPORT_SYMBOL(find_next_child);
 
 void simple_recursive_removal(struct dentry *dentry,
                               void (*callback)(struct dentry *))

-- 
2.47.2