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From: Christoph Hellwig <hch@lst.de>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Daniel Vetter <daniel@ffwll.ch>, Nadav Amit <namit@vmware.com>,
	"VMware, Inc." <pv-drivers@vmware.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	David Hildenbrand <david@redhat.com>,
	Minchan Kim <minchan@kernel.org>, Nitin Gupta <ngupta@vflare.org>,
	Jason Gunthorpe <jgg@nvidia.com>,
	Alex Williamson <alex.williamson@redhat.com>,
	linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
	dri-devel@lists.freedesktop.org,
	virtualization@lists.linux-foundation.org,
	linux-fsdevel@vger.kernel.org, linux-mm@kvack.org
Subject: [PATCH 5/9] vmw_balloon: remove the balloon-vmware file system
Date: Tue,  9 Mar 2021 16:53:44 +0100
Message-ID: <20210309155348.974875-6-hch@lst.de> (raw)
In-Reply-To: <20210309155348.974875-1-hch@lst.de>

Just use the generic anon_inode file system.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/misc/vmw_balloon.c | 24 ++----------------------
 1 file changed, 2 insertions(+), 22 deletions(-)

diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c
index 5d057a05ddbee8..be4be32f858253 100644
--- a/drivers/misc/vmw_balloon.c
+++ b/drivers/misc/vmw_balloon.c
@@ -16,6 +16,7 @@
 //#define DEBUG
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <linux/anon_inodes.h>
 #include <linux/types.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
@@ -1735,20 +1736,6 @@ static inline void vmballoon_debugfs_exit(struct vmballoon *b)
 
 
 #ifdef CONFIG_BALLOON_COMPACTION
-
-static int vmballoon_init_fs_context(struct fs_context *fc)
-{
-	return init_pseudo(fc, BALLOON_VMW_MAGIC) ? 0 : -ENOMEM;
-}
-
-static struct file_system_type vmballoon_fs = {
-	.name           	= "balloon-vmware",
-	.init_fs_context	= vmballoon_init_fs_context,
-	.kill_sb        	= kill_anon_super,
-};
-
-static struct vfsmount *vmballoon_mnt;
-
 /**
  * vmballoon_migratepage() - migrates a balloon page.
  * @b_dev_info: balloon device information descriptor.
@@ -1878,8 +1865,6 @@ static void vmballoon_compaction_deinit(struct vmballoon *b)
 		iput(b->b_dev_info.inode);
 
 	b->b_dev_info.inode = NULL;
-	kern_unmount(vmballoon_mnt);
-	vmballoon_mnt = NULL;
 }
 
 /**
@@ -1895,13 +1880,8 @@ static void vmballoon_compaction_deinit(struct vmballoon *b)
  */
 static __init int vmballoon_compaction_init(struct vmballoon *b)
 {
-	vmballoon_mnt = kern_mount(&vmballoon_fs);
-	if (IS_ERR(vmballoon_mnt))
-		return PTR_ERR(vmballoon_mnt);
-
 	b->b_dev_info.migratepage = vmballoon_migratepage;
-	b->b_dev_info.inode = alloc_anon_inode_sb(vmballoon_mnt->mnt_sb);
-
+	b->b_dev_info.inode = alloc_anon_inode();
 	if (IS_ERR(b->b_dev_info.inode))
 		return PTR_ERR(b->b_dev_info.inode);
 
-- 
2.30.1


  parent reply index

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-09 15:53 make alloc_anon_inode more useful Christoph Hellwig
2021-03-09 15:53 ` [PATCH 1/9] fs: rename alloc_anon_inode to alloc_anon_inode_sb Christoph Hellwig
2021-03-09 16:21   ` David Hildenbrand
2021-03-09 19:33   ` Gao Xiang
2021-03-10  6:39   ` Minchan Kim
2021-03-10  8:30     ` Christoph Hellwig
2021-03-10  9:33   ` Christian Brauner
2021-03-09 15:53 ` [PATCH 2/9] fs: add an argument-less alloc_anon_inode Christoph Hellwig
2021-03-09 16:22   ` David Hildenbrand
2021-03-09 19:34   ` Gao Xiang
2021-03-10  9:35   ` Christian Brauner
2021-03-09 15:53 ` [PATCH 3/9] powerpc/pseries: remove the ppc-cmm file system Christoph Hellwig
2021-03-09 16:26   ` David Hildenbrand
2021-03-09 16:30   ` Jason Gunthorpe
2021-03-10 16:29   ` Al Viro
2021-03-11  8:42     ` Christoph Hellwig
2021-03-09 15:53 ` [PATCH 4/9] drm: remove the drm " Christoph Hellwig
2021-03-10 16:32   ` Al Viro
2021-03-11  8:35     ` Christoph Hellwig
2021-03-09 15:53 ` Christoph Hellwig [this message]
2021-03-09 16:28   ` [PATCH 5/9] vmw_balloon: remove the balloon-vmware " David Hildenbrand
2021-03-09 15:53 ` [PATCH 6/9] virtio_balloon: remove the balloon-kvm " Christoph Hellwig
2021-03-09 16:29   ` David Hildenbrand
2021-03-09 15:53 ` [PATCH 7/9] iomem: remove the iomem " Christoph Hellwig
2021-03-14 13:55   ` [iomem] e14497b88f: BUG:KASAN:null-ptr-deref_in_alloc_anon_inode kernel test robot
2021-03-09 15:53 ` [PATCH 8/9] z3fold: remove the z3fold file system Christoph Hellwig
2021-03-09 15:53 ` [PATCH 9/9] zsmalloc: remove the zsmalloc " Christoph Hellwig
2021-03-10  6:44   ` Minchan Kim
2021-03-09 16:54 ` make alloc_anon_inode more useful Jason Gunthorpe
2021-03-10  8:32   ` Christoph Hellwig
2021-03-10  4:05 ` Matthew Wilcox
2021-03-10  8:37   ` Christoph Hellwig

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