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-rw-r--r--fs/btrfs/inode.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 1a74b501869..99483447459 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2864,6 +2864,15 @@ int btrfs_defrag_file(struct file *file) {
goto out_unlock;
}
}
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
+ ClearPageDirty(page);
+#else
+ cancel_dirty_page(page, PAGE_CACHE_SIZE);
+#endif
+ wait_on_page_writeback(page);
+ set_page_extent_mapped(page);
+
page_start = (u64)page->index << PAGE_CACHE_SHIFT;
page_end = page_start + PAGE_CACHE_SIZE - 1;
@@ -3105,6 +3114,8 @@ long btrfs_ioctl(struct file *file, unsigned int
return btrfs_ioctl_resize(root, (void __user *)arg);
case BTRFS_IOC_ADD_DEV:
return btrfs_ioctl_add_dev(root, (void __user *)arg);
+ case BTRFS_IOC_BALANCE:
+ return btrfs_balance(root->fs_info->dev_root);
}
return -ENOTTY;