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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>
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1 changed files with 4 additions and 0 deletions
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@ -1401,6 +1401,8 @@ xfs_vm_readpage(
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struct page *page)
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struct page *page)
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{
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{
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trace_xfs_vm_readpage(page->mapping->host, 1);
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trace_xfs_vm_readpage(page->mapping->host, 1);
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if (i_blocksize(page->mapping->host) == PAGE_SIZE)
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return iomap_readpage(page, &xfs_iomap_ops);
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return mpage_readpage(page, xfs_get_blocks);
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return mpage_readpage(page, xfs_get_blocks);
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}
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}
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@ -1412,6 +1414,8 @@ xfs_vm_readpages(
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unsigned nr_pages)
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unsigned nr_pages)
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{
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{
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trace_xfs_vm_readpages(mapping->host, nr_pages);
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trace_xfs_vm_readpages(mapping->host, nr_pages);
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if (i_blocksize(mapping->host) == PAGE_SIZE)
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return iomap_readpages(mapping, pages, nr_pages, &xfs_iomap_ops);
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return mpage_readpages(mapping, pages, nr_pages, xfs_get_blocks);
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return mpage_readpages(mapping, pages, nr_pages, xfs_get_blocks);
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}
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}
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