Commit 8b2e77c1 authored Jul 11, 2018 by Christoph Hellwig Committed by Darrick J. Wong Jul 11, 2018

xfs: use iomap for blocksize == PAGE_SIZE readpage and readpages



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@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

parent c2efdfc1

fs/xfs/xfs_aops.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1401,6 +1401,8 @@ 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);
		}

		@@ -1412,6 +1414,8 @@ 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);
		}