linux-kernel - [PATCH 06/15] dax: stop using VM

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Date:   Tue, 31 Oct 2017 16:22:07 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     linux-nvdimm@...ts.01.org
Cc:     Jan Kara <jack@...e.cz>, linux-kernel@...r.kernel.org,
        linux-xfs@...r.kernel.org, linux-mm@...ck.org,
        Jeff Moyer <jmoyer@...hat.com>,
        Ross Zwisler <ross.zwisler@...ux.intel.com>,
        linux-fsdevel@...r.kernel.org, akpm@...ux-foundation.org,
        hch@....de
Subject: [PATCH 06/15] dax: stop using VM_HUGEPAGE for dax

This flag is deprecated in favor of the vma_is_dax() check in
transparent_hugepage_enabled() added in commit baabda261424 "mm: always
enable thp for dax mappings"

Cc: Jeff Moyer <jmoyer@...hat.com>
Cc: Christoph Hellwig <hch@....de>
Cc: Ross Zwisler <ross.zwisler@...ux.intel.com>
Reviewed-by: Jan Kara <jack@...e.cz>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
---
 drivers/dax/device.c |    1 -
 fs/ext4/file.c       |    1 -
 fs/xfs/xfs_file.c    |    2 --
 3 files changed, 4 deletions(-)

diff --git a/drivers/dax/device.c b/drivers/dax/device.c
index ed79d006026e..74a35eb5e6d3 100644
--- a/drivers/dax/device.c
+++ b/drivers/dax/device.c
@@ -450,7 +450,6 @@ static int dax_mmap(struct file *filp, struct vm_area_struct *vma)
 		return rc;
 
 	vma->vm_ops = &dax_vm_ops;
-	vma->vm_flags |= VM_HUGEPAGE;
 	return 0;
 }
 
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 0cc9d205bd96..a54e1b4c49f9 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -352,7 +352,6 @@ static int ext4_file_mmap(struct file *file, struct vm_area_struct *vma)
 	file_accessed(file);
 	if (IS_DAX(file_inode(file))) {
 		vma->vm_ops = &ext4_dax_vm_ops;
-		vma->vm_flags |= VM_HUGEPAGE;
 	} else {
 		vma->vm_ops = &ext4_file_vm_ops;
 	}
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index c419c6fdb769..c6780743f8ec 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -1133,8 +1133,6 @@ xfs_file_mmap(
 {
 	file_accessed(filp);
 	vma->vm_ops = &xfs_file_vm_ops;
-	if (IS_DAX(file_inode(filp)))
-		vma->vm_flags |= VM_HUGEPAGE;
 	return 0;
 }