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| author | Mikulas Patocka <mpatocka@redhat.com> | 2009-06-22 10:12:26 +0100 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2009-06-22 10:12:26 +0100 |
| commit | 2bd023452592e5f5cf90dd426cc39b7632b15b76 (patch) | |
| tree | 62fe4d816c597e1b6c58bf150603dd72c9ce6135 /tools/perf/perf.c | |
| parent | 51aa322849581f1a73594e48ea0df63f914ee6a2 (diff) | |
dm snapshot: use barrier when writing exception store
Send barrier requests when updating the exception area.
Exception area updates need to be ordered w.r.t. data writes, so that
the writes are not reordered in hardware disk cache.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'tools/perf/perf.c')
0 files changed, 0 insertions, 0 deletions