ext4, dax: add ext4_bmap to ext4_dax_aops
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: 5f0663bb ("ext4, dax: introduce ext4_dax_aops") Signed-off-by: NToshi Kani <toshi.kani@hpe.com> Signed-off-by: NTheodore Ts'o <tytso@mit.edu> Suggested-by: NJan Kara <jack@suse.cz> Cc: stable@vger.kernel.org
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