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| author |   Brian Foster <bfoster@redhat.com> | 2016-07-20 11:13:43 +1000 |
|---|---|---|
| committer |   Dave Chinner <david@fromorbit.com> | 2016-07-20 11:13:43 +1000 |
| commit | c891c30a4dd1a236bb98630b35fc2769c5ce0d40 (patch) | |
| tree | 38f8824c5d44ce4898ecef28d9f5b72307fa6e2f /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | xfs: don't reset b_retries to 0 on every failure (diff) | |
| download | wireguard-linux-c891c30a4dd1a236bb98630b35fc2769c5ce0d40.tar.xz wireguard-linux-c891c30a4dd1a236bb98630b35fc2769c5ce0d40.zip | |
xfs: exclude never-released buffers from buftarg I/O accounting
The upcoming buftarg I/O accounting mechanism maintains a count of
all buffers that have undergone I/O in the current hold-release
cycle. Certain buffers associated with core infrastructure (e.g.,
the xfs_mount superblock buffer, log buffers) are never released,
however. This means that accounting I/O submission on such buffers
elevates the buftarg count indefinitely and could lead to lockup on
unmount.
Define a new buffer flag to explicitly exclude buffers from buftarg
I/O accounting. Set the flag on the superblock and associated log
buffers.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions