diff mbox series

[v6,1/4] iomap: Clean up __generic_write_end calling

Message ID 20190429163239.4874-1-agruenba@redhat.com (mailing list archive)
State New, archived
Headers show
Series [v6,1/4] iomap: Clean up __generic_write_end calling | expand

Commit Message

Andreas Gruenbacher April 29, 2019, 4:32 p.m. UTC
From: Christoph Hellwig <hch@lst.de>

Move the call to __generic_write_end into iomap_write_end instead of
duplicating it in each of the three branches.  This requires open coding
the generic_write_end for the buffer_head case.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
---
 fs/iomap.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

Comments

Andreas Gruenbacher April 29, 2019, 5:46 p.m. UTC | #1
On Mon, 29 Apr 2019 at 18:32, Andreas Gruenbacher <agruenba@redhat.com> wrote:
> From: Christoph Hellwig <hch@lst.de>
>
> Move the call to __generic_write_end into iomap_write_end instead of
> duplicating it in each of the three branches.  This requires open coding
> the generic_write_end for the buffer_head case.

Wouldn't it make sense to turn __generic_write_end into a void
function? Right now, it just oddly return its copied argument.

Andreas
Christoph Hellwig April 29, 2019, 7:42 p.m. UTC | #2
On Mon, Apr 29, 2019 at 07:46:29PM +0200, Andreas Gruenbacher wrote:
> On Mon, 29 Apr 2019 at 18:32, Andreas Gruenbacher <agruenba@redhat.com> wrote:
> > From: Christoph Hellwig <hch@lst.de>
> >
> > Move the call to __generic_write_end into iomap_write_end instead of
> > duplicating it in each of the three branches.  This requires open coding
> > the generic_write_end for the buffer_head case.
> 
> Wouldn't it make sense to turn __generic_write_end into a void
> function? Right now, it just oddly return its copied argument.

Yes, we could remove the return value.  That should be a separate patch
after this one, though.
Jan Kara April 29, 2019, 9:44 p.m. UTC | #3
On Mon 29-04-19 18:32:36, Andreas Gruenbacher wrote:
> From: Christoph Hellwig <hch@lst.de>
> 
> Move the call to __generic_write_end into iomap_write_end instead of
> duplicating it in each of the three branches.  This requires open coding
> the generic_write_end for the buffer_head case.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

Looks good to me. You can add:

Reviewed-by: Jan Kara <jack@suse.cz>

								Honza

> ---
>  fs/iomap.c | 18 ++++++++----------
>  1 file changed, 8 insertions(+), 10 deletions(-)
> 
> diff --git a/fs/iomap.c b/fs/iomap.c
> index 97cb9d486a7d..2344c662e6fc 100644
> --- a/fs/iomap.c
> +++ b/fs/iomap.c
> @@ -738,13 +738,11 @@ __iomap_write_end(struct inode *inode, loff_t pos, unsigned len,
>  	 * uptodate page as a zero-length write, and force the caller to redo
>  	 * the whole thing.
>  	 */
> -	if (unlikely(copied < len && !PageUptodate(page))) {
> -		copied = 0;
> -	} else {
> -		iomap_set_range_uptodate(page, offset_in_page(pos), len);
> -		iomap_set_page_dirty(page);
> -	}
> -	return __generic_write_end(inode, pos, copied, page);
> +	if (unlikely(copied < len && !PageUptodate(page)))
> +		return 0;
> +	iomap_set_range_uptodate(page, offset_in_page(pos), len);
> +	iomap_set_page_dirty(page);
> +	return copied;
>  }
>  
>  static int
> @@ -761,7 +759,6 @@ iomap_write_end_inline(struct inode *inode, struct page *page,
>  	kunmap_atomic(addr);
>  
>  	mark_inode_dirty(inode);
> -	__generic_write_end(inode, pos, copied, page);
>  	return copied;
>  }
>  
> @@ -774,12 +771,13 @@ iomap_write_end(struct inode *inode, loff_t pos, unsigned len,
>  	if (iomap->type == IOMAP_INLINE) {
>  		ret = iomap_write_end_inline(inode, page, iomap, pos, copied);
>  	} else if (iomap->flags & IOMAP_F_BUFFER_HEAD) {
> -		ret = generic_write_end(NULL, inode->i_mapping, pos, len,
> -				copied, page, NULL);
> +		ret = block_write_end(NULL, inode->i_mapping, pos, len, copied,
> +				page, NULL);
>  	} else {
>  		ret = __iomap_write_end(inode, pos, len, copied, page, iomap);
>  	}
>  
> +	ret = __generic_write_end(inode, pos, ret, page);
>  	if (iomap->page_done)
>  		iomap->page_done(inode, pos, copied, page, iomap);
>  
> -- 
> 2.20.1
>
diff mbox series

Patch

diff --git a/fs/iomap.c b/fs/iomap.c
index 97cb9d486a7d..2344c662e6fc 100644
--- a/fs/iomap.c
+++ b/fs/iomap.c
@@ -738,13 +738,11 @@  __iomap_write_end(struct inode *inode, loff_t pos, unsigned len,
 	 * uptodate page as a zero-length write, and force the caller to redo
 	 * the whole thing.
 	 */
-	if (unlikely(copied < len && !PageUptodate(page))) {
-		copied = 0;
-	} else {
-		iomap_set_range_uptodate(page, offset_in_page(pos), len);
-		iomap_set_page_dirty(page);
-	}
-	return __generic_write_end(inode, pos, copied, page);
+	if (unlikely(copied < len && !PageUptodate(page)))
+		return 0;
+	iomap_set_range_uptodate(page, offset_in_page(pos), len);
+	iomap_set_page_dirty(page);
+	return copied;
 }
 
 static int
@@ -761,7 +759,6 @@  iomap_write_end_inline(struct inode *inode, struct page *page,
 	kunmap_atomic(addr);
 
 	mark_inode_dirty(inode);
-	__generic_write_end(inode, pos, copied, page);
 	return copied;
 }
 
@@ -774,12 +771,13 @@  iomap_write_end(struct inode *inode, loff_t pos, unsigned len,
 	if (iomap->type == IOMAP_INLINE) {
 		ret = iomap_write_end_inline(inode, page, iomap, pos, copied);
 	} else if (iomap->flags & IOMAP_F_BUFFER_HEAD) {
-		ret = generic_write_end(NULL, inode->i_mapping, pos, len,
-				copied, page, NULL);
+		ret = block_write_end(NULL, inode->i_mapping, pos, len, copied,
+				page, NULL);
 	} else {
 		ret = __iomap_write_end(inode, pos, len, copied, page, iomap);
 	}
 
+	ret = __generic_write_end(inode, pos, ret, page);
 	if (iomap->page_done)
 		iomap->page_done(inode, pos, copied, page, iomap);