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| author |   Josh Durgin <josh.durgin@inktank.com> | 2014-04-04 12:06:32 -0700 |
|---|---|---|
| committer |   Ilya Dryomov <idryomov@redhat.com> | 2014-10-14 21:03:32 +0400 |
| commit | 3c5df89367761d09d76454a2c4301a73bf2d46ce (patch) | |
| tree | 2e03d9e6e1d75a8558610fcee226f6e1f9fe6fc4 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | rbd: initial discard bits from Guangliang Zhao (diff) | |
| download | wireguard-linux-3c5df89367761d09d76454a2c4301a73bf2d46ce.tar.xz wireguard-linux-3c5df89367761d09d76454a2c4301a73bf2d46ce.zip | |
rbd: read image size for discard check safely
In rbd_img_request_fill() the image size is only checked to determine
whether we can truncate an object instead of zeroing it for discard
requests. Take rbd_dev->header_rwsem while reading the image size, and
move this read into the discard check, so that non-discard ops don't
need to take the semaphore in this function.
Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions