From 9969441f9f86a8a7de8c36514fa789e5f5d83145 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Thu, 4 Jun 2015 09:19:10 +1000 Subject: [PATCH] xfs: add DAX truncate support When we truncate a DAX file, we need to call through the DAX page truncation path rather than through block_truncate_page() so that mappings and block zeroing are all handled correctly. Otherwise, truncate does not need to change. Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Signed-off-by: Dave Chinner --- fs/xfs/xfs_iops.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index f4cd7204e236..0994f95c368f 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -851,7 +851,11 @@ xfs_setattr_size( * to hope that the caller sees ENOMEM and retries the truncate * operation. */ - error = block_truncate_page(inode->i_mapping, newsize, xfs_get_blocks); + if (IS_DAX(inode)) + error = dax_truncate_page(inode, newsize, xfs_get_blocks_direct); + else + error = block_truncate_page(inode->i_mapping, newsize, + xfs_get_blocks); if (error) return error; truncate_setsize(inode, newsize); -- 2.39.5