From: "Kirill A. Shutemov" <kirill.shute...@linux.intel.com>

Nobody uses it anymore.

[a...@linux-foundation.org: fix filemap_xip.c]
Signed-off-by: Kirill A. Shutemov <kirill.shute...@linux.intel.com>
Cc: Wu Fengguang <fengguang...@intel.com>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>

https://jira.sw.ru/browse/PSBM-52992

(cherry picked from commit d83a08db5ba6072caa658745881f4baa9bad6a08)
Signed-off-by: Andrey Ryabinin <aryabi...@virtuozzo.com>
---
 fs/9p/vfs_file.c   | 1 -
 fs/btrfs/file.c    | 1 -
 fs/ceph/addr.c     | 1 -
 fs/cifs/file.c     | 1 -
 fs/ext4/file.c     | 1 -
 fs/f2fs/file.c     | 1 -
 fs/fuse/file.c     | 1 -
 fs/gfs2/file.c     | 1 -
 fs/nfs/file.c      | 1 -
 fs/nilfs2/file.c   | 1 -
 fs/ocfs2/mmap.c    | 1 -
 fs/ubifs/file.c    | 1 -
 fs/xfs/xfs_file.c  | 1 -
 include/linux/fs.h | 6 ------
 include/linux/mm.h | 3 ---
 mm/filemap.c       | 1 -
 mm/filemap_xip.c   | 1 -
 mm/shmem.c         | 1 -
 18 files changed, 25 deletions(-)

diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index d384a8b..7da03f8 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -735,7 +735,6 @@ v9fs_cached_file_write(struct file *filp, const char __user 
* data,
 static const struct vm_operations_struct v9fs_file_vm_ops = {
        .fault = filemap_fault,
        .page_mkwrite = v9fs_vm_page_mkwrite,
-       .remap_pages = generic_file_remap_pages,
 };
 
 
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 46fb619..7a5eb43 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -2100,7 +2100,6 @@ out:
 static const struct vm_operations_struct btrfs_file_vm_ops = {
        .fault          = filemap_fault,
        .page_mkwrite   = btrfs_page_mkwrite,
-       .remap_pages    = generic_file_remap_pages,
 };
 
 static int btrfs_file_mmap(struct file *filp, struct vm_area_struct *vma)
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 919408e..f592c47 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -1572,7 +1572,6 @@ out:
 static struct vm_operations_struct ceph_vmops = {
        .fault          = ceph_filemap_fault,
        .page_mkwrite   = ceph_page_mkwrite,
-       .remap_pages    = generic_file_remap_pages,
 };
 
 int ceph_mmap(struct file *file, struct vm_area_struct *vma)
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 401fa67..5ef4544 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -3268,7 +3268,6 @@ cifs_page_mkwrite(struct vm_area_struct *vma, struct 
vm_fault *vmf)
 static struct vm_operations_struct cifs_file_vm_ops = {
        .fault = filemap_fault,
        .page_mkwrite = cifs_page_mkwrite,
-       .remap_pages = generic_file_remap_pages,
 };
 
 int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma)
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 301f09c..5b1c2ef 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -205,7 +205,6 @@ ext4_file_write(struct kiocb *iocb, const struct iovec *iov,
 static const struct vm_operations_struct ext4_file_vm_ops = {
        .fault          = filemap_fault,
        .page_mkwrite   = ext4_page_mkwrite,
-       .remap_pages    = generic_file_remap_pages,
 };
 
 static int ext4_file_mmap(struct file *file, struct vm_area_struct *vma)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 1cae864..c2ee42e 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -99,7 +99,6 @@ out:
 static const struct vm_operations_struct f2fs_file_vm_ops = {
        .fault          = filemap_fault,
        .page_mkwrite   = f2fs_vm_page_mkwrite,
-       .remap_pages    = generic_file_remap_pages,
 };
 
 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 5e73dd0..6b9e4ea 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -2408,7 +2408,6 @@ static const struct vm_operations_struct fuse_file_vm_ops 
= {
        .close          = fuse_vma_close,
        .fault          = filemap_fault,
        .page_mkwrite   = fuse_page_mkwrite,
-       .remap_pages    = generic_file_remap_pages,
 };
 
 static int fuse_file_mmap(struct file *file, struct vm_area_struct *vma)
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 2019595..63d150c 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -504,7 +504,6 @@ out:
 static const struct vm_operations_struct gfs2_vm_ops = {
        .fault = filemap_fault,
        .page_mkwrite = gfs2_page_mkwrite,
-       .remap_pages = generic_file_remap_pages,
 };
 
 /**
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 27c6aa6..8eff30e 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -635,7 +635,6 @@ out:
 static const struct vm_operations_struct nfs_file_vm_ops = {
        .fault = filemap_fault,
        .page_mkwrite = nfs_vm_page_mkwrite,
-       .remap_pages = generic_file_remap_pages,
 };
 
 static int nfs_need_sync_write(struct file *filp, struct inode *inode)
diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c
index 08fdb77..e3ce6c9 100644
--- a/fs/nilfs2/file.c
+++ b/fs/nilfs2/file.c
@@ -135,7 +135,6 @@ static int nilfs_page_mkwrite(struct vm_area_struct *vma, 
struct vm_fault *vmf)
 static const struct vm_operations_struct nilfs_file_vm_ops = {
        .fault          = filemap_fault,
        .page_mkwrite   = nilfs_page_mkwrite,
-       .remap_pages    = generic_file_remap_pages,
 };
 
 static int nilfs_file_mmap(struct file *file, struct vm_area_struct *vma)
diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c
index 10d66c7..9581d190 100644
--- a/fs/ocfs2/mmap.c
+++ b/fs/ocfs2/mmap.c
@@ -173,7 +173,6 @@ out:
 static const struct vm_operations_struct ocfs2_file_vm_ops = {
        .fault          = ocfs2_fault,
        .page_mkwrite   = ocfs2_page_mkwrite,
-       .remap_pages    = generic_file_remap_pages,
 };
 
 int ocfs2_mmap(struct file *file, struct vm_area_struct *vma)
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 1437453..2dfae9a 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1538,7 +1538,6 @@ out_unlock:
 static const struct vm_operations_struct ubifs_file_vm_ops = {
        .fault        = filemap_fault,
        .page_mkwrite = ubifs_vm_page_mkwrite,
-       .remap_pages = generic_file_remap_pages,
 };
 
 static int ubifs_file_mmap(struct file *file, struct vm_area_struct *vma)
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 94d8e7d..e587314 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -1574,5 +1574,4 @@ const struct file_operations xfs_dir_file_operations = {
 static const struct vm_operations_struct xfs_file_vm_ops = {
        .fault          = xfs_filemap_fault,
        .page_mkwrite   = xfs_filemap_page_mkwrite,
-       .remap_pages    = generic_file_remap_pages,
 };
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 683b2b3..408bb24 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2810,12 +2810,6 @@ extern int sb_min_blocksize(struct super_block *, int);
 extern int generic_file_mmap(struct file *, struct vm_area_struct *);
 extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *);
 extern int file_read_actor(read_descriptor_t * desc, struct page *page, 
unsigned long offset, unsigned long size);
-static inline int generic_file_remap_pages(struct vm_area_struct *vma,
-               unsigned long addr, unsigned long size, pgoff_t pgoff)
-{
-       BUG();
-       return 0;
-}
 int generic_write_checks(struct file *file, loff_t *pos, size_t *count, int 
isblk);
 extern ssize_t generic_file_aio_read(struct kiocb *, const struct iovec *, 
unsigned long, loff_t);
 extern ssize_t generic_file_read_iter(struct kiocb *, struct iov_iter *, 
loff_t);
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 6d49c59..4ad0b19 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -264,9 +264,6 @@ struct vm_operations_struct {
        int (*migrate)(struct vm_area_struct *vma, const nodemask_t *from,
                const nodemask_t *to, unsigned long flags);
 #endif
-       /* called by sys_remap_file_pages() to populate non-linear mapping */
-       int (*remap_pages)(struct vm_area_struct *vma, unsigned long addr,
-                          unsigned long size, pgoff_t pgoff);
 };
 
 struct mmu_gather;
diff --git a/mm/filemap.c b/mm/filemap.c
index d8cc478..ef8de71 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2170,7 +2170,6 @@ EXPORT_SYMBOL(filemap_page_mkwrite);
 const struct vm_operations_struct generic_file_vm_ops = {
        .fault          = filemap_fault,
        .page_mkwrite   = filemap_page_mkwrite,
-       .remap_pages    = generic_file_remap_pages,
 };
 
 /* This is used for a general mmap of a disk file */
diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c
index d566a20..168e4ba 100644
--- a/mm/filemap_xip.c
+++ b/mm/filemap_xip.c
@@ -307,7 +307,6 @@ out:
 static const struct vm_operations_struct xip_file_vm_ops = {
        .fault  = xip_file_fault,
        .page_mkwrite   = filemap_page_mkwrite,
-       .remap_pages = generic_file_remap_pages,
 };
 
 int xip_file_mmap(struct file * file, struct vm_area_struct * vma)
diff --git a/mm/shmem.c b/mm/shmem.c
index f36ccb2..827347d 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -3261,7 +3261,6 @@ static const struct vm_operations_struct shmem_vm_ops = {
        .set_policy     = shmem_set_policy,
        .get_policy     = shmem_get_policy,
 #endif
-       .remap_pages    = generic_file_remap_pages,
 };
 
 static struct dentry *shmem_mount(struct file_system_type *fs_type,
-- 
2.7.3

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