linux-kernel - [PATCH] mm/Kconfig: NEED_BOUNCE

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Date:	Thu, 23 Jul 2015 13:18:06 +0200
From:	Valentin Rothberg <valentinrothberg@...il.com>
To:	akpm@...ux-foundation.org, jack@...e.cz, minchan@...nel.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:	pebolle@...cali.nl, stefan.hengelein@....de,
	Valentin Rothberg <valentinrothberg@...il.com>
Subject: [PATCH] mm/Kconfig: NEED_BOUNCE_POOL: clean-up condition

commit 106542e7987c ("fs: Remove ext3 filesystem driver") removed ext3
and JBD, hence remove the superfluous condition.

Signed-off-by: Valentin Rothberg <valentinrothberg@...il.com>
---
I detected the issue with undertaker-checkpatch
(https://undertaker.cs.fau.de)

 mm/Kconfig | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/mm/Kconfig b/mm/Kconfig
index e79de2bd12cd..d4e6495a720f 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -299,15 +299,9 @@ config BOUNCE
 # On the 'tile' arch, USB OHCI needs the bounce pool since tilegx will often
 # have more than 4GB of memory, but we don't currently use the IOTLB to present
 # a 32-bit address to OHCI.  So we need to use a bounce pool instead.
-#
-# We also use the bounce pool to provide stable page writes for jbd.  jbd
-# initiates buffer writeback without locking the page or setting PG_writeback,
-# and fixing that behavior (a second time; jbd2 doesn't have this problem) is
-# a major rework effort.  Instead, use the bounce buffer to snapshot pages
-# (until jbd goes away).  The only jbd user is ext3.
 config NEED_BOUNCE_POOL
 	bool
-	default y if (TILE && USB_OHCI_HCD) || (BLK_DEV_INTEGRITY && JBD)
+	default y if TILE && USB_OHCI_HCD
 
 config NR_QUICK
 	int
-- 
1.9.1

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