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Date: Sun, 27 Aug 2017 20:48:35 -0700 From: Dan Williams <dan.j.williams@...el.com> To: linux-fsdevel@...r.kernel.org Cc: jack@...e.cz, "Darrick J. Wong" <darrick.wong@...cle.com>, linux-nvdimm@...ts.01.org, linux-xfs@...r.kernel.org, Andreas Dilger <adilger.kernel@...ger.ca>, Jan Kara <jack@...e.com>, Theodore Ts'o <tytso@....edu>, linux-ext4@...r.kernel.org, hch@....de Subject: [PATCH v2 0/2] fs, dax: lookup dax_device at mount time Changes since v1: * Move the lookup to mount time. (Christoph) --- 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. --- Dan Williams (2): fs, xfs: perform dax_device lookup at mount ext2, ext4: use the super_block dax_device drivers/dax/super.c | 10 ++++++++++ fs/ext2/inode.c | 10 ++-------- fs/ext4/inode.c | 10 ++-------- fs/super.c | 26 +++++++++++++++++++++++--- 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 | 21 +++++++++++++++++---- include/linux/dax.h | 6 ++++++ include/linux/fs.h | 1 + 12 files changed, 81 insertions(+), 34 deletions(-)
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