[PATCH 13/33] xfs: use iomap for blocksize == PAGE_SIZE readpage and readpages
flat view
STALE3074d
From: Christoph Hellwig <hch@lst.de>
Date: 2018-05-09 07:48:10
Also in:
linux-fsdevel, linux-mm, linux-xfs
Subsystem:
filesystems (vfs and infrastructure), the rest, xfs filesystem · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds, Carlos Maiolino
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> --- 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 8b06be0a80da..8e4d01e76fc8 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