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| author | Dave Chinner <dchinner@redhat.com> | 2018-05-02 12:54:52 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2018-05-09 10:04:01 -0700 |
| commit | 4f8ff44ba0ad82a6f51c1bf381d7bad346464b09 (patch) | |
| tree | f54b53f824041b26fdcd51e5cbeaab29c827af86 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | xfs: move generic_write_sync calls inwards (diff) | |
| download | linux-4f8ff44ba0ad82a6f51c1bf381d7bad346464b09.tar.gz linux-4f8ff44ba0ad82a6f51c1bf381d7bad346464b09.zip | |
iomap: iomap_dio_rw() handles all sync writes
Currently iomap_dio_rw() only handles (data)sync write completions
for AIO. This means we can't optimised non-AIO IO to minimise device
flushes as we can't tell the caller whether a flush is required or
not.
To solve this problem and enable further optimisations, make
iomap_dio_rw responsible for data sync behaviour for all IO, not
just AIO.
In doing so, the sync operation is now accounted as part of the DIO
IO by inode_dio_end(), hence post-IO data stability updates will no
long race against operations that serialise via inode_dio_wait()
such as truncate or hole punch.
Signed-Off-By: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions