Changes since v2 [1]:
* Split fs_dax_get_by_bdev() to its own patch (Christoph)
* Push dax_device reference management into <fs>_{fill,put}_super()
rather than the generic vfs. (Christoph)
[1]: https://lists.01.org/pipermail/linux-nvdimm/2017-August/012133.html
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Christoph notes:
I just noticed that we now do a fs_dax_get_by_host in every
iomap_begin call for DAX. This function iterates a list, does a
string compared and igrab. I really think we need to cache this in
the superblock (possible even the fs superblock) similar to what we
do for the block device.
This passes the libnvdimm unit tests.
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Dan Williams (4):
dax: introduce a fs_dax_get_by_bdev() helper
xfs: perform dax_device lookup at mount
ext2: perform dax_device lookup at mount
ext4: perform dax_device lookup at mount
drivers/dax/super.c | 10 ++++++++++
fs/ext2/ext2.h | 1 +
fs/ext2/inode.c | 11 +++--------
fs/ext2/super.c | 5 +++++
fs/ext4/ext4.h | 1 +
fs/ext4/inode.c | 11 +++--------
fs/ext4/super.c | 5 +++++
fs/xfs/xfs_aops.c | 13 +++++++++++++
fs/xfs/xfs_aops.h | 1 +
fs/xfs/xfs_buf.c | 4 +++-
fs/xfs/xfs_buf.h | 3 ++-
fs/xfs/xfs_iomap.c | 10 +---------
fs/xfs/xfs_super.c | 25 +++++++++++++++++++++----
include/linux/dax.h | 6 ++++++
14 files changed, 75 insertions(+), 31 deletions(-)
