Re: [PATCH 3/4] 9pfs: Fix filesystem to wait for stable pagewriteback

[Jan Kara]

 On Thu 13-12-12 00:08:02, Darrick J. Wong wrote:
> Fix up the ->page_mkwrite handler to provide stable page writes if necessary.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
  Looks good. Also UBIFS and OCFS2 seem to need similar treatment. Patches
attached...

									Honza
> ---
>  fs/9p/vfs_file.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> 
> diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
> index c2483e9..357260b 100644
> --- a/fs/9p/vfs_file.c
> +++ b/fs/9p/vfs_file.c
> @@ -620,6 +620,7 @@ v9fs_vm_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
>  	lock_page(page);
>  	if (page->mapping != inode->i_mapping)
>  		goto out_unlock;
> +	wait_for_stable_page(page);
>  
>  	return VM_FAULT_LOCKED;
>  out_unlock:
> 
-- 
Jan Kara <jack@xxxxxxx>
SUSE Labs, CR