On Mon, Apr 08, 2013 at 11:32:32PM +0200, Jan Kara wrote:
> We don't have to wait for unwritten extent conversion in
> ext4_ind_direct_IO() as all writes that happened before DIO are flushed
> by the generic code and extent conversion has happened before we cleared
> PageWriteback bit.
>
> Signed-off-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Zheng Liu <wenqing.lz@xxxxxxxxxx>
Regards,
- Zheng
> ---
> fs/ext4/indirect.c | 5 -----
> 1 files changed, 0 insertions(+), 5 deletions(-)
>
> diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
> index 197b202..d1c6be4 100644
> --- a/fs/ext4/indirect.c
> +++ b/fs/ext4/indirect.c
> @@ -809,11 +809,6 @@ ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb,
>
> retry:
> if (rw == READ && ext4_should_dioread_nolock(inode)) {
> - if (unlikely(atomic_read(&EXT4_I(inode)->i_unwritten))) {
> - mutex_lock(&inode->i_mutex);
> - ext4_flush_unwritten_io(inode);
> - mutex_unlock(&inode->i_mutex);
> - }
> /*
> * Nolock dioread optimization may be dynamically disabled
> * via ext4_inode_block_unlocked_dio(). Check inode's state
> --
> 1.7.1
>
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