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| author | Paolo Bonzini <pbonzini@redhat.com> | 2020-01-08 15:55:56 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2020-01-30 20:59:41 +0000 |
| commit | 3ba0e1a00cf3c09bfa3980ce98439dc73707039d (patch) | |
| tree | ad507adbe126e2a7e8e01a1ecfaba3ff349fba19 /python | |
| parent | 18fbd0dec7e05183d7fef636155cd9b3e2ac5013 (diff) | |
| download | qemu-3ba0e1a00cf3c09bfa3980ce98439dc73707039d.zip qemu-3ba0e1a00cf3c09bfa3980ce98439dc73707039d.tar.gz qemu-3ba0e1a00cf3c09bfa3980ce98439dc73707039d.tar.bz2 | |
block/io: take bs->reqs_lock in bdrv_mark_request_serialising
bdrv_mark_request_serialising is writing the overlap_offset and
overlap_bytes fields of BdrvTrackedRequest. Take bs->reqs_lock
for the whole duration of it, and not just when waiting for
serialising requests, so that tracked_request_overlaps does not
look at a half-updated request.
The new code does not unlock/relock around retries. This is unnecessary
because a retry is always preceded by a CoQueue wait, which already
releases and reacquires bs->reqs_lock.
Reported-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1578495356-46219-4-git-send-email-pbonzini@redhat.com
Message-Id: <1578495356-46219-4-git-send-email-pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'python')
0 files changed, 0 insertions, 0 deletions