4.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Toshi Kani <toshi.kani@xxxxxxx>
commit 94dbb63117e82253c9592816aa4465f0a9c94850 upstream.
Ext4 mount path calls .bmap to the journal inode. This currently
works for the DAX mount case because ext4_iget() always set
'ext4_da_aops' to any regular files.
In preparation to fix ext4_iget() to set 'ext4_dax_aops' for ext4
DAX files, add ext4_bmap() to 'ext4_dax_aops', since bmap works for
DAX inodes.
Fixes: 5f0663bb4a64 ("ext4, dax: introduce ext4_dax_aops")
Signed-off-by: Toshi Kani <toshi.kani@xxxxxxx>
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Suggested-by: Jan Kara <jack@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ext4/inode.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3951,6 +3951,7 @@ static const struct address_space_operat
.writepages = ext4_dax_writepages,
.direct_IO = noop_direct_IO,
.set_page_dirty = noop_set_page_dirty,
+ .bmap = ext4_bmap,
.invalidatepage = noop_invalidatepage,
};
