From: Matthew Wilcox (Oracle) <willy@infradead.org>
Date: Thu, 28 May 2026 17:31:20 +0000 (+0100)
Subject: buffer: Convert __sync_dirty_buffer to bh_submit()
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac13eb47988fa871abcc3f34df946b5c039b3481;p=thirdparty%2Flinux.git

buffer: Convert __sync_dirty_buffer to bh_submit()

Avoid an extra indirect function call and changing the buffer refcount
by using bh_submit() instead of submit_bh().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://patch.msgid.link/20260528173150.1093780-8-willy@infradead.org
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
---

diff --git a/fs/buffer.c b/fs/buffer.c
index f8428f802b681..deabf74793250 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2857,9 +2857,7 @@ int __sync_dirty_buffer(struct buffer_head *bh, blk_opf_t op_flags)
 			return -EIO;
 		}
 
-		get_bh(bh);
-		bh->b_end_io = end_buffer_write_sync;
-		submit_bh(REQ_OP_WRITE | op_flags, bh);
+		bh_submit(bh, REQ_OP_WRITE | op_flags, bh_end_write);
 		wait_on_buffer(bh);
 		if (!buffer_uptodate(bh))
 			return -EIO;