add-ext4_bmap-to-ext4_dax_aops

   1 ext4, dax: add ext4_bmap to ext4_dax_aops
   2
   3 From: Toshi Kani <toshi.kani@hpe.com>
   4
   5 Ext4 mount path calls .bmap to the journal inode. This currently
   6 works for the DAX mount case because ext4_iget() always set
   7 'ext4_da_aops' to any regular files.
   8
   9 In preparation to fix ext4_iget() to set 'ext4_dax_aops' for ext4
  10 DAX files, add ext4_bmap() to 'ext4_dax_aops', since bmap works for
  11 DAX inodes.
  12
  13 Fixes: 5f0663bb4a64 ("ext4, dax: introduce ext4_dax_aops")
  14 Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
  15 Signed-off-by: Theodore Ts'o <tytso@mit.edu>
  16 Suggested-by: Jan Kara <jack@suse.cz>
  17 Cc: stable@vger.kernel.org
  18 ---
  19  fs/ext4/inode.c |    1 +
  20  1 file changed, 1 insertion(+)
  21
  22 diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
  23 index d0dd585add6a..e4acaa980467 100644
  24 --- a/fs/ext4/inode.c
  25 +++ b/fs/ext4/inode.c
  26 @@ -3948,6 +3948,7 @@ static const struct address_space_operations ext4_dax_aops = {
  27         .writepages             = ext4_dax_writepages,
  28         .direct_IO              = noop_direct_IO,
  29         .set_page_dirty         = noop_set_page_dirty,
  30 +       .bmap                   = ext4_bmap,
  31         .invalidatepage         = noop_invalidatepage,
  32  };
  33
  34