linux-kernel - [RFC PATCH 01/76] nfs, cifs, ceph, 9p: Disable use of fscache prior to its rewrite

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Message-ID: <160588456649.3465195.16910213094485608266.stgit@warthog.procyon.org.uk>
Date:   Fri, 20 Nov 2020 15:02:46 +0000
From:   David Howells <dhowells@...hat.com>
To:     Trond Myklebust <trondmy@...merspace.com>,
        Anna Schumaker <anna.schumaker@...app.com>,
        Steve French <sfrench@...ba.org>,
        Dominique Martinet <asmadeus@...ewreck.org>
Cc:     Dave Wysochanski <dwysocha@...hat.com>,
        Trond Myklebust <trond.myklebust@...merspace.com>,
        linux-nfs@...r.kernel.org, Jeff Layton <jlayton@...nel.org>,
        Ilya Dryomov <idryomov@...il.com>, ceph-devel@...r.kernel.org,
        linux-cifs@...r.kernel.org, Eric Van Hensbergen <ericvh@...il.com>,
        Latchesar Ionkov <lucho@...kov.net>,
        v9fs-developer@...ts.sourceforge.net, dhowells@...hat.com,
        Jeff Layton <jlayton@...hat.com>,
        Matthew Wilcox <willy@...radead.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        linux-cachefs@...hat.com, linux-afs@...ts.infradead.org,
        linux-nfs@...r.kernel.org, linux-cifs@...r.kernel.org,
        ceph-devel@...r.kernel.org, v9fs-developer@...ts.sourceforge.net,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [RFC PATCH 01/76] nfs, cifs, ceph,
 9p: Disable use of fscache prior to its rewrite

Temporarily disable the use of fscache by the various Linux network
filesystems, apart from afs, so that the fscache core can be rewritten.

Signed-off-by: David Howells <dhowells@...hat.com>
cc: Dave Wysochanski <dwysocha@...hat.com>
cc: Trond Myklebust <trond.myklebust@...merspace.com>
cc: Anna Schumaker <anna.schumaker@...app.com>
cc: linux-nfs@...r.kernel.org
cc: Jeff Layton <jlayton@...nel.org>
cc: Ilya Dryomov <idryomov@...il.com>
cc: ceph-devel@...r.kernel.org
cc: Steve French <sfrench@...ba.org>
cc: linux-cifs@...r.kernel.org
cc: Eric Van Hensbergen <ericvh@...il.com>
cc: Latchesar Ionkov <lucho@...kov.net>
cc: Dominique Martinet <asmadeus@...ewreck.org>
cc: v9fs-developer@...ts.sourceforge.net
---

 fs/9p/Kconfig      |    2 +-
 fs/ceph/Kconfig    |    2 +-
 fs/cifs/Kconfig    |    2 +-
 fs/fscache/Kconfig |    4 ++++
 fs/nfs/Kconfig     |    2 +-
 5 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/fs/9p/Kconfig b/fs/9p/Kconfig
index 09fd4a185fd2..66ca72422961 100644
--- a/fs/9p/Kconfig
+++ b/fs/9p/Kconfig
@@ -13,7 +13,7 @@ config 9P_FS
 if 9P_FS
 config 9P_FSCACHE
 	bool "Enable 9P client caching support"
-	depends on 9P_FS=m && FSCACHE || 9P_FS=y && FSCACHE=y
+	depends on 9P_FS=m && FSCACHE_OLD || 9P_FS=y && FSCACHE_OLD=y
 	help
 	  Choose Y here to enable persistent, read-only local
 	  caching support for 9p clients using FS-Cache
diff --git a/fs/ceph/Kconfig b/fs/ceph/Kconfig
index 471e40156065..e955a38be3c8 100644
--- a/fs/ceph/Kconfig
+++ b/fs/ceph/Kconfig
@@ -20,7 +20,7 @@ config CEPH_FS
 if CEPH_FS
 config CEPH_FSCACHE
 	bool "Enable Ceph client caching support"
-	depends on CEPH_FS=m && FSCACHE || CEPH_FS=y && FSCACHE=y
+	depends on CEPH_FS=m && FSCACHE_OLD || CEPH_FS=y && FSCACHE_OLD=y
 	help
 	  Choose Y here to enable persistent, read-only local
 	  caching support for Ceph clients using FS-Cache
diff --git a/fs/cifs/Kconfig b/fs/cifs/Kconfig
index 604f65f4b6c5..441f24bff49c 100644
--- a/fs/cifs/Kconfig
+++ b/fs/cifs/Kconfig
@@ -206,7 +206,7 @@ config CIFS_SMB_DIRECT
 
 config CIFS_FSCACHE
 	bool "Provide CIFS client caching support"
-	depends on CIFS=m && FSCACHE || CIFS=y && FSCACHE=y
+	depends on CIFS=m && FSCACHE_OLD || CIFS=y && FSCACHE_OLD=y
 	help
 	  Makes CIFS FS-Cache capable. Say Y here if you want your CIFS data
 	  to be cached locally on disk through the general filesystem cache
diff --git a/fs/fscache/Kconfig b/fs/fscache/Kconfig
index 5e796e6c38e5..ce6f731065d0 100644
--- a/fs/fscache/Kconfig
+++ b/fs/fscache/Kconfig
@@ -60,3 +60,7 @@ config FSCACHE_OBJECT_LIST
 	help
 	  Maintain a global list of active fscache objects that can be
 	  retrieved through /proc/fs/fscache/objects for debugging purposes
+
+config FSCACHE_OLD
+	bool
+	default n
diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig
index 88e1763e02f3..8909ef506073 100644
--- a/fs/nfs/Kconfig
+++ b/fs/nfs/Kconfig
@@ -170,7 +170,7 @@ config ROOT_NFS
 
 config NFS_FSCACHE
 	bool "Provide NFS client caching support"
-	depends on NFS_FS=m && FSCACHE || NFS_FS=y && FSCACHE=y
+	depends on NFS_FS=m && FSCACHE_OLD || NFS_FS=y && FSCACHE_OLD=y
 	help
 	  Say Y here if you want NFS data to be cached locally on disc through
 	  the general filesystem cache manager