[PATCH 2/2] xfs: add support for iomap-based swapfile activation

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Use iomap-based swapfile activation instead of the default
generic_swapfile_activate bmap-based infrastructure.
---
 fs/xfs/xfs_aops.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 31f1f10eecd1..878ff3872883 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -1491,6 +1491,12 @@ xfs_vm_set_page_dirty(
 	return newly_dirty;
 }
 
+static int xfs_swap_activate(struct swap_info_struct *sis, struct file *file,
+			     sector_t *span)
+{
+	return iomap_swap_activate(sis, file, span, &xfs_iomap_ops);
+}
+
 const struct address_space_operations xfs_address_space_operations = {
 	.readpage		= xfs_vm_readpage,
 	.readpages		= xfs_vm_readpages,
@@ -1504,4 +1510,5 @@ const struct address_space_operations xfs_address_space_operations = {
 	.migratepage		= buffer_migrate_page,
 	.is_partially_uptodate  = block_is_partially_uptodate,
 	.error_remove_page	= generic_error_remove_page,
+	.swap_activate          = xfs_swap_activate,
 };
-- 
2.14.1

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