Hi all,
this series adds a new direct I/O implementation based on the iomap
interface, and switches XFS to use it.
The first two patches are a resend of my earlier series to remove the
XFS iolock. They are needed for the lockdep assert in the new iomap
code.
The rest implements a new iomap_dio_rw direct I/O implementation and
switches XFS to use it.
Note that this series is on top of a merge of the XFS for-next
tree with the block tree, which has a new helper needed for this
implementation. This is the block tree it's on top of:
git://git.kernel.dk/linux-block for-4.10/block
To make everyones life easie I also have a git tree with the merge
plus the patches in this series available here:
git://git.infradead.org/users/hch/vfs.git iomap-dio.3
Changes since V2:
- added a few comments to unconfuse reviewers
- added a iomap_dio_set_error helper
- dropped support for not filling holes on writes
- pulled in a more recent block tree (blk_poll -> blk_mq_poll)
Changes since V1:
- dropped the bio_iov_iter_get_pages patch, now merged in the block tree
- rebased on top of a merge of the XFS tree with the block tree
- stopped using WRITE_ODIRECT which has been removed in the block tree
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