On Wed, May 23, 2018 at 04:43:41PM +0200, Christoph Hellwig wrote:
> For file systems with a block size that equals the page size we never do
> partial reads, so we can use the buffer_head-less iomap versions of
> readpage and readpages without conflicting with the buffer_head structures
> create later in write_begin.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Looks ok,
Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
--D
> ---
> fs/xfs/xfs_aops.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
> index 56e405572909..c631c457b444 100644
> --- a/fs/xfs/xfs_aops.c
> +++ b/fs/xfs/xfs_aops.c
> @@ -1402,6 +1402,8 @@ xfs_vm_readpage(
> struct page *page)
> {
> trace_xfs_vm_readpage(page->mapping->host, 1);
> + if (i_blocksize(page->mapping->host) == PAGE_SIZE)
> + return iomap_readpage(page, &xfs_iomap_ops);
> return mpage_readpage(page, xfs_get_blocks);
> }
>
> @@ -1413,6 +1415,8 @@ xfs_vm_readpages(
> unsigned nr_pages)
> {
> trace_xfs_vm_readpages(mapping->host, nr_pages);
> + if (i_blocksize(mapping->host) == PAGE_SIZE)
> + return iomap_readpages(mapping, pages, nr_pages, &xfs_iomap_ops);
> return mpage_readpages(mapping, pages, nr_pages, xfs_get_blocks);
> }
>
> --
> 2.17.0
>
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