4 files changed, 0 insertions, 70 deletions

diff --git a/block/ioctl.c b/block/ioctl.c
index 77f5d17779d6..d8996bbd7f12 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -434,42 +434,6 @@ bool blkdev_dax_capable(struct block_device *bdev)
 
         return true;
 }
-
-static int blkdev_daxset(struct block_device *bdev, unsigned long argp)
-{
-        unsigned long arg;
-        int rc = 0;
-
-        if (!capable(CAP_SYS_ADMIN))
-                return -EACCES;
-
-        if (get_user(arg, (int __user *)(argp)))
-                return -EFAULT;
-        arg = !!arg;
-        if (arg == !!(bdev->bd_inode->i_flags & S_DAX))
-                return 0;
-
-        if (arg)
-                arg = S_DAX;
-
-        if (arg && !blkdev_dax_capable(bdev))
-                return -ENOTTY;
-
-        inode_lock(bdev->bd_inode);
-        if (bdev->bd_map_count == 0)
-                inode_set_flags(bdev->bd_inode, arg, S_DAX);
-        else
-                rc = -EBUSY;
-        inode_unlock(bdev->bd_inode);
-        return rc;
-}
-#else
-static int blkdev_daxset(struct block_device *bdev, int arg)
-{
-        if (arg)
-                return -ENOTTY;
-        return 0;
-}
 #endif
 
 static int blkdev_flushbuf(struct block_device *bdev, fmode_t mode,
@@ -634,8 +598,6 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
         case BLKTRACESETUP:
         case BLKTRACETEARDOWN:
                 return blk_trace_ioctl(bdev, cmd, argp);
-        case BLKDAXSET:
-                return blkdev_daxset(bdev, arg);
         case BLKDAXGET:
                 return put_int(arg, !!(bdev->bd_inode->i_flags & S_DAX));
                 break;
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 7b9cd49622b1..afb437484362 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1736,37 +1736,13 @@ static int blkdev_dax_pmd_fault(struct vm_area_struct *vma, unsigned long addr,
         return __dax_pmd_fault(vma, addr, pmd, flags, blkdev_get_block, NULL);
 }
 
-static void blkdev_vm_open(struct vm_area_struct *vma)
-{
-        struct inode *bd_inode = bdev_file_inode(vma->vm_file);
-        struct block_device *bdev = I_BDEV(bd_inode);
-
-        inode_lock(bd_inode);
-        bdev->bd_map_count++;
-        inode_unlock(bd_inode);
-}
-
-static void blkdev_vm_close(struct vm_area_struct *vma)
-{
-        struct inode *bd_inode = bdev_file_inode(vma->vm_file);
-        struct block_device *bdev = I_BDEV(bd_inode);
-
-        inode_lock(bd_inode);
-        bdev->bd_map_count--;
-        inode_unlock(bd_inode);
-}
-
 static const struct vm_operations_struct blkdev_dax_vm_ops = {
-        .open           = blkdev_vm_open,
-        .close          = blkdev_vm_close,
         .fault          = blkdev_dax_fault,
         .pmd_fault      = blkdev_dax_pmd_fault,
         .pfn_mkwrite    = blkdev_dax_fault,
 };
 
 static const struct vm_operations_struct blkdev_default_vm_ops = {
-        .open           = blkdev_vm_open,
-        .close          = blkdev_vm_close,
         .fault          = filemap_fault,
         .map_pages      = filemap_map_pages,
 };
@@ -1774,18 +1750,14 @@ static const struct vm_operations_struct blkdev_default_vm_ops = {
 static int blkdev_mmap(struct file *file, struct vm_area_struct *vma)
 {
         struct inode *bd_inode = bdev_file_inode(file);
-        struct block_device *bdev = I_BDEV(bd_inode);
 
         file_accessed(file);
-        inode_lock(bd_inode);
-        bdev->bd_map_count++;
         if (IS_DAX(bd_inode)) {
                 vma->vm_ops = &blkdev_dax_vm_ops;
                 vma->vm_flags |= VM_MIXEDMAP | VM_HUGEPAGE;
         } else {
                 vma->vm_ops = &blkdev_default_vm_ops;
         }
-        inode_unlock(bd_inode);
 
         return 0;
 }
diff --git a/include/linux/fs.h b/include/linux/fs.h
index b10002d4a5f5..ae681002100a 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -484,9 +484,6 @@ struct block_device {
         int                     bd_fsfreeze_count;
         /* Mutex for freeze */
         struct mutex            bd_fsfreeze_mutex;
-#ifdef CONFIG_FS_DAX
-        int                     bd_map_count;
-#endif
 };
 
 /*
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index 41e0433b4a83..149bec83a907 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -222,7 +222,6 @@ struct fsxattr {
 #define BLKSECDISCARD _IO(0x12,125)
 #define BLKROTATIONAL _IO(0x12,126)
 #define BLKZEROOUT _IO(0x12,127)
-#define BLKDAXSET _IO(0x12,128)
 #define BLKDAXGET _IO(0x12,129)
 
 #define BMAP_IOCTL 1            /* obsolete - kept for compatibility */