From 21205f6488ade598427cc525b349be75a69d69bd Mon Sep 17 00:00:00 2001
From: Jaydeep Kshirsagar <jkshirsagar@maxlinear.com>
Date: Sat, 1 Feb 2025 08:15:24 -0800
Subject: [PATCH] Avoid ARC buffer transfrom operations in prefetch

This change will prevent prefetch to perform unnecessary ARC buffer
fill when reading from disk.

Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Jaydeep Kshirsagar <jkshirsagar@maxlinear.com>
Co-authored-by: Alexander Motin <mav@FreeBSD.org>
Closes #17013
---
 module/zfs/arc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/module/zfs/arc.c b/module/zfs/arc.c
index bd6f076df..1f653d953 100644
--- a/module/zfs/arc.c
+++ b/module/zfs/arc.c
@@ -6031,6 +6031,7 @@ top:
 		acb->acb_compressed = compressed_read;
 		acb->acb_encrypted = encrypted_read;
 		acb->acb_noauth = noauth_read;
+		acb->acb_nobuf = no_buf;
 		acb->acb_zb = *zb;
 
 		ASSERT3P(hdr->b_l1hdr.b_acb, ==, NULL);