ext2, dax: set ext2_dax_aops for dax files
authorToshi Kani <toshi.kani@hpe.com>
Fri, 14 Sep 2018 14:51:14 +0000 (08:51 -0600)
committerJan Kara <jack@suse.cz>
Wed, 19 Sep 2018 13:03:04 +0000 (15:03 +0200)
commit9e796c9db93b4840d1b00e550eea26db7cb741e2
tree959d3634e09dd62573a27aac97e751658972257d
parentf21f7fa263ac005713f0a7a43179c5aea0fabe85
ext2, dax: set ext2_dax_aops for dax files

Sync syscall to DAX file needs to flush processor cache, but it
currently does not flush to existing DAX files.  This is because
'ext2_da_aops' is set to address_space_operations of existing DAX
files, instead of 'ext2_dax_aops', since S_DAX flag is set after
ext2_set_aops() in the open path.

Similar to ext4, change ext2_iget() to initialize i_flags before
ext2_set_aops().

Fixes: fb094c90748f ("ext2, dax: introduce ext2_dax_aops")
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Suggested-by: Jan Kara <jack@suse.cz>
Cc: Jan Kara <jack@suse.cz>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
fs/ext2/inode.c