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| author |   Jens Axboe <axboe@fb.com> | 2014-02-12 09:34:01 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-02-12 09:36:37 -0700 |
| commit | c8123f8c9cb517403b51aa41c3c46ff5e10b2c17 (patch) | |
| tree | 434d3614e79458bc86e64a61034cbe9448177ea5 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | xen-blkback: init persistent_purge_work work_struct (diff) | |
| download | linux-dev-c8123f8c9cb517403b51aa41c3c46ff5e10b2c17.tar.xz linux-dev-c8123f8c9cb517403b51aa41c3c46ff5e10b2c17.zip | |
block: add cond_resched() to potentially long running ioctl discard loop
When mkfs issues a full device discard and the device only
supports discards of a smallish size, we can loop in
blkdev_issue_discard() for a long time. If preempt isn't enabled,
this can turn into a softlock situation and the kernel will
start complaining.
Add an explicit cond_resched() at the end of the loop to avoid
that.
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions