{
struct address_space *mapping = bdev->bd_inode->i_mapping;
- if (mapping->nrpages == 0 && mapping->nrshadows == 0)
+ if (mapping->nrpages == 0 && mapping->nrexceptional == 0)
return;
invalidate_bh_lrus();
struct inode *bd_inode = bdev_file_inode(file);
loff_t retval;
- mutex_lock(&bd_inode->i_mutex);
+ inode_lock(bd_inode);
retval = fixed_size_llseek(file, offset, whence, i_size_read(bd_inode));
- mutex_unlock(&bd_inode->i_mutex);
+ inode_unlock(bd_inode);
return retval;
}
{
unsigned bsize = bdev_logical_block_size(bdev);
- mutex_lock(&bdev->bd_inode->i_mutex);
+ inode_lock(bdev->bd_inode);
i_size_write(bdev->bd_inode, size);
- mutex_unlock(&bdev->bd_inode->i_mutex);
+ inode_unlock(bdev->bd_inode);
while (bsize < PAGE_CACHE_SIZE) {
if (size & bsize)
break;
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);
-
- mutex_lock(&bd_inode->i_mutex);
- bdev->bd_map_count++;
- mutex_unlock(&bd_inode->i_mutex);
-}
-
-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);
-
- mutex_lock(&bd_inode->i_mutex);
- bdev->bd_map_count--;
- mutex_unlock(&bd_inode->i_mutex);
-}
-
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,
};
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);
- mutex_lock(&bd_inode->i_mutex);
- 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;
}
- mutex_unlock(&bd_inode->i_mutex);
return 0;
}