mm: remove cleancache

Patch series "remove Xen tmem leftovers".

Since the removal of the Xen tmem driver in 2019, the cleancache hooks
are entirely unused, as are large parts of frontswap.  This series
against linux-next (with the folio changes included) removes
cleancaches, and cuts down frontswap to the bits actually used by zswap.

This patch (of 13):

The cleancache subsystem is unused since the removal of Xen tmem driver
in commit 814bbf49dcd0 ("xen: remove tmem driver").

[akpm@linux-foundation.org: remove now-unreachable code]

Link: https://lkml.kernel.org/r/20211224062246.1258487-1-hch@lst.de
Link: https://lkml.kernel.org/r/20211224062246.1258487-2-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Konrad Rzeszutek Wilk <Konrad.wilk@oracle.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Vitaly Wool <vitaly.wool@konsulko.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 files changed, 0 insertions, 12 deletions

diff --git a/arch/m68k/configs/amiga_defconfig b/arch/m68k/configs/amiga_defconfig
index a4b6c7108465..bc9952f8be66 100644
--- a/arch/m68k/configs/amiga_defconfig
+++ b/arch/m68k/configs/amiga_defconfig
@@ -45,7 +45,6 @@ CONFIG_IOSCHED_BFQ=m
 CONFIG_BINFMT_AOUT=m
 CONFIG_BINFMT_MISC=m
 # CONFIG_COMPACTION is not set
-CONFIG_CLEANCACHE=y
 CONFIG_ZPOOL=m
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/m68k/configs/apollo_defconfig b/arch/m68k/configs/apollo_defconfig
index 2db721965520..a77269c6e5ba 100644
--- a/arch/m68k/configs/apollo_defconfig
+++ b/arch/m68k/configs/apollo_defconfig
@@ -41,7 +41,6 @@ CONFIG_IOSCHED_BFQ=m
 CONFIG_BINFMT_AOUT=m
 CONFIG_BINFMT_MISC=m
 # CONFIG_COMPACTION is not set
-CONFIG_CLEANCACHE=y
 CONFIG_ZPOOL=m
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/m68k/configs/atari_defconfig b/arch/m68k/configs/atari_defconfig
index c266a704eecd..7a74efa6b9a1 100644
--- a/arch/m68k/configs/atari_defconfig
+++ b/arch/m68k/configs/atari_defconfig
@@ -48,7 +48,6 @@ CONFIG_IOSCHED_BFQ=m
 CONFIG_BINFMT_AOUT=m
 CONFIG_BINFMT_MISC=m
 # CONFIG_COMPACTION is not set
-CONFIG_CLEANCACHE=y
 CONFIG_ZPOOL=m
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/m68k/configs/bvme6000_defconfig b/arch/m68k/configs/bvme6000_defconfig
index f644f08dd6ed..a5323bf2eb33 100644
--- a/arch/m68k/configs/bvme6000_defconfig
+++ b/arch/m68k/configs/bvme6000_defconfig
@@ -38,7 +38,6 @@ CONFIG_IOSCHED_BFQ=m
 CONFIG_BINFMT_AOUT=m
 CONFIG_BINFMT_MISC=m
 # CONFIG_COMPACTION is not set
-CONFIG_CLEANCACHE=y
 CONFIG_ZPOOL=m
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/m68k/configs/hp300_defconfig b/arch/m68k/configs/hp300_defconfig
index e4924650b687..5e80aa0869d5 100644
--- a/arch/m68k/configs/hp300_defconfig
+++ b/arch/m68k/configs/hp300_defconfig
@@ -40,7 +40,6 @@ CONFIG_IOSCHED_BFQ=m
 CONFIG_BINFMT_AOUT=m
 CONFIG_BINFMT_MISC=m
 # CONFIG_COMPACTION is not set
-CONFIG_CLEANCACHE=y
 CONFIG_ZPOOL=m
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/m68k/configs/mac_defconfig b/arch/m68k/configs/mac_defconfig
index 24113871ea76..e84326a3f62d 100644
--- a/arch/m68k/configs/mac_defconfig
+++ b/arch/m68k/configs/mac_defconfig
@@ -39,7 +39,6 @@ CONFIG_IOSCHED_BFQ=m
 CONFIG_BINFMT_AOUT=m
 CONFIG_BINFMT_MISC=m
 # CONFIG_COMPACTION is not set
-CONFIG_CLEANCACHE=y
 CONFIG_ZPOOL=m
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/m68k/configs/multi_defconfig b/arch/m68k/configs/multi_defconfig
index 6a7e4be70eea..337552f43339 100644
--- a/arch/m68k/configs/multi_defconfig
+++ b/arch/m68k/configs/multi_defconfig
@@ -59,7 +59,6 @@ CONFIG_IOSCHED_BFQ=m
 CONFIG_BINFMT_AOUT=m
 CONFIG_BINFMT_MISC=m
 # CONFIG_COMPACTION is not set
-CONFIG_CLEANCACHE=y
 CONFIG_ZPOOL=m
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/m68k/configs/mvme147_defconfig b/arch/m68k/configs/mvme147_defconfig
index 1d223247aff0..7b688f7d272a 100644
--- a/arch/m68k/configs/mvme147_defconfig
+++ b/arch/m68k/configs/mvme147_defconfig
@@ -37,7 +37,6 @@ CONFIG_IOSCHED_BFQ=m
 CONFIG_BINFMT_AOUT=m
 CONFIG_BINFMT_MISC=m
 # CONFIG_COMPACTION is not set
-CONFIG_CLEANCACHE=y
 CONFIG_ZPOOL=m
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/m68k/configs/mvme16x_defconfig b/arch/m68k/configs/mvme16x_defconfig
index 961f789f96c9..7c2cb31d63dd 100644
--- a/arch/m68k/configs/mvme16x_defconfig
+++ b/arch/m68k/configs/mvme16x_defconfig
@@ -38,7 +38,6 @@ CONFIG_IOSCHED_BFQ=m
 CONFIG_BINFMT_AOUT=m
 CONFIG_BINFMT_MISC=m
 # CONFIG_COMPACTION is not set
-CONFIG_CLEANCACHE=y
 CONFIG_ZPOOL=m
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/m68k/configs/q40_defconfig b/arch/m68k/configs/q40_defconfig
index ff4b5e469390..ca43897af26d 100644
--- a/arch/m68k/configs/q40_defconfig
+++ b/arch/m68k/configs/q40_defconfig
@@ -39,7 +39,6 @@ CONFIG_IOSCHED_BFQ=m
 CONFIG_BINFMT_AOUT=m
 CONFIG_BINFMT_MISC=m
 # CONFIG_COMPACTION is not set
-CONFIG_CLEANCACHE=y
 CONFIG_ZPOOL=m
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/m68k/configs/sun3_defconfig b/arch/m68k/configs/sun3_defconfig
index 5f228621d0cc..e3d515f37144 100644
--- a/arch/m68k/configs/sun3_defconfig
+++ b/arch/m68k/configs/sun3_defconfig
@@ -35,7 +35,6 @@ CONFIG_IOSCHED_BFQ=m
 CONFIG_BINFMT_AOUT=m
 CONFIG_BINFMT_MISC=m
 # CONFIG_COMPACTION is not set
-CONFIG_CLEANCACHE=y
 CONFIG_ZPOOL=m
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/m68k/configs/sun3x_defconfig b/arch/m68k/configs/sun3x_defconfig
index a600cb9e68c2..d601606c969b 100644
--- a/arch/m68k/configs/sun3x_defconfig
+++ b/arch/m68k/configs/sun3x_defconfig
@@ -35,7 +35,6 @@ CONFIG_IOSCHED_BFQ=m
 CONFIG_BINFMT_AOUT=m
 CONFIG_BINFMT_MISC=m
 # CONFIG_COMPACTION is not set
-CONFIG_CLEANCACHE=y
 CONFIG_ZPOOL=m
 CONFIG_NET=y
 CONFIG_PACKET=y