From 41b7928813b5db9f61bf55e0ce395f69eb0473eb Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Wed, 10 Jun 2026 12:34:17 -0700
Subject: [PATCH] f2fs: Prepare for supporting delayed bio completion

Use bio frontpadding to allocate memory for a work_struct when
allocating a bio.

Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/data.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 60dea95b0295..9bddc8bf0af6 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -41,12 +41,17 @@ struct f2fs_folio_state {
 	unsigned int		read_pages_pending;
 };
 
+struct f2fs_bio {
+	struct work_struct work;
+	struct bio bio;
+};
+
 #define	F2FS_BIO_POOL_SIZE	NR_CURSEG_TYPE
 
 int __init f2fs_init_bioset(void)
 {
 	return bioset_init(&f2fs_bioset, F2FS_BIO_POOL_SIZE,
-					0, BIOSET_NEED_BVECS);
+			   offsetof(struct f2fs_bio, bio), BIOSET_NEED_BVECS);
 }
 
 void f2fs_destroy_bioset(void)