[PATCH 7/9] iomem: remove the iomem file system

[Christoph Hellwig]

Just use the generic anon_inode file system.

Signed-off-by: Christoph Hellwig <h...@lst.de>
---
 kernel/resource.c | 30 ++++--------------------------
 1 file changed, 4 insertions(+), 26 deletions(-)

diff --git a/kernel/resource.c b/kernel/resource.c
index 0fd091a3f2fc66..12560553c26796 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -26,6 +26,7 @@
 #include <linux/mm.h>
 #include <linux/mount.h>
 #include <linux/resource_ext.h>
+#include <linux/anon_inodes.h>
 #include <uapi/linux/magic.h>
 #include <asm/io.h>
 
@@ -1838,37 +1839,14 @@ static int __init strict_iomem(char *str)
        return 1;
 }
 
-static int iomem_fs_init_fs_context(struct fs_context *fc)
-{
-       return init_pseudo(fc, DEVMEM_MAGIC) ? 0 : -ENOMEM;
-}
-
-static struct file_system_type iomem_fs_type = {
-       .name           = "iomem",
-       .owner          = THIS_MODULE,
-       .init_fs_context = iomem_fs_init_fs_context,
-       .kill_sb        = kill_anon_super,
-};
-
 static int __init iomem_init_inode(void)
 {
-       static struct vfsmount *iomem_vfs_mount;
-       static int iomem_fs_cnt;
        struct inode *inode;
-       int rc;
-
-       rc = simple_pin_fs(&iomem_fs_type, &iomem_vfs_mount, &iomem_fs_cnt);
-       if (rc < 0) {
-               pr_err("Cannot mount iomem pseudo filesystem: %d\n", rc);
-               return rc;
-       }
 
-       inode = alloc_anon_inode_sb(iomem_vfs_mount->mnt_sb);
+       inode = alloc_anon_inode();
        if (IS_ERR(inode)) {
-               rc = PTR_ERR(inode);
-               pr_err("Cannot allocate inode for iomem: %d\n", rc);
-               simple_release_fs(&iomem_vfs_mount, &iomem_fs_cnt);
-               return rc;
+               pr_err("Cannot allocate inode for iomem: %zd\n", 
PTR_ERR(inode));
+               return PTR_ERR(inode);
        }
 
        /*
-- 
2.30.1