Re: [PATCH 06/13] xfs: xfs_sync_data is redundant.

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

On Tue, Oct 02, 2012 at 10:10:22AM +1000, Dave Chinner wrote:
> diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
> index da69c18..0ec7a46 100644
> --- a/fs/xfs/xfs_inode.h
> +++ b/fs/xfs/xfs_inode.h
> @@ -294,7 +294,7 @@ xfs_new_eof(struct xfs_inode *ip, xfs_fsize_t new_size)
>  static inline void
>  xfs_flush_inodes(struct xfs_inode *ip)
>  {
> -     writeback_inodes_sb_if_idle(VFS_I(ip)->i_sb, WB_REASON_FS_FREE_SPACE);
> +     sync_inodes_sb(VFS_I(ip)->i_sb);

sync_inodes_sb needs s_umount held and asserts that, while our callers
usually won't have it.