mm: update hugetlbfs to use VMA flags on mmap_prepare

In order to update all mmap_prepare users to utilising the new VMA flags
type vma_flags_t and associated helper functions, we start by updating
hugetlbfs which has a lot of additional logic that requires updating to
make this change.

This is laying the groundwork for eliminating the vm_flags_t from struct
vm_area_desc and using vma_flags_t only, which further lays the ground for
removing the deprecated vm_flags_t type altogether.

No functional changes intended.

Link: https://lkml.kernel.org/r/9226bec80c9aa3447cc2b83354f733841dba8a50.1769097829.git.lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Damien Le Moal <dlemoal@kernel.org>
Cc: "Darrick J. Wong" <djwong@kernel.org>
Cc: Jarkko Sakkinen <jarkko@kernel.org>
Cc: Yury Norov <ynorov@nvidia.com>
Cc: Chris Mason <clm@fb.com>
Cc: Pedro Falcato <pfalcato@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

1 files changed, 7 insertions, 7 deletions

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 3b4c152c5c73..95a5b23b4808 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -109,7 +109,7 @@ static int hugetlbfs_file_mmap_prepare(struct vm_area_desc *desc)
 	loff_t len, vma_len;
 	int ret;
 	struct hstate *h = hstate_file(file);
-	vm_flags_t vm_flags;
+	vma_flags_t vma_flags;
 
 	/*
 	 * vma address alignment (but not the pgoff alignment) has
@@ -119,7 +119,7 @@ static int hugetlbfs_file_mmap_prepare(struct vm_area_desc *desc)
 	 * way when do_mmap unwinds (may be important on powerpc
 	 * and ia64).
 	 */
-	desc->vm_flags |= VM_HUGETLB | VM_DONTEXPAND;
+	vma_desc_set_flags(desc, VMA_HUGETLB_BIT, VMA_DONTEXPAND_BIT);
 	desc->vm_ops = &hugetlb_vm_ops;
 
 	/*
@@ -148,23 +148,23 @@ static int hugetlbfs_file_mmap_prepare(struct vm_area_desc *desc)
 
 	ret = -ENOMEM;
 
-	vm_flags = desc->vm_flags;
+	vma_flags = desc->vma_flags;
 	/*
 	 * for SHM_HUGETLB, the pages are reserved in the shmget() call so skip
 	 * reserving here. Note: only for SHM hugetlbfs file, the inode
 	 * flag S_PRIVATE is set.
 	 */
 	if (inode->i_flags & S_PRIVATE)
-		vm_flags |= VM_NORESERVE;
+		vma_flags_set(&vma_flags, VMA_NORESERVE_BIT);
 
 	if (hugetlb_reserve_pages(inode,
 			desc->pgoff >> huge_page_order(h),
 			len >> huge_page_shift(h), desc,
-			vm_flags) < 0)
+			vma_flags) < 0)
 		goto out;
 
 	ret = 0;
-	if ((desc->vm_flags & VM_WRITE) && inode->i_size < len)
+	if (vma_desc_test_flags(desc, VMA_WRITE_BIT) && inode->i_size < len)
 		i_size_write(inode, len);
 out:
 	inode_unlock(inode);
@@ -1527,7 +1527,7 @@ static int get_hstate_idx(int page_size_log)
  * otherwise hugetlb_reserve_pages reserves one less hugepages than intended.
  */
 struct file *hugetlb_file_setup(const char *name, size_t size,
-				vm_flags_t acctflag, int creat_flags,
+				vma_flags_t acctflag, int creat_flags,
 				int page_size_log)
 {
 	struct inode *inode;