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| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2011-06-28 13:22:48 +0200 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2011-06-30 09:23:46 +0200 |
| commit | 86e1e98e5c6b4edab97e2b058466ef553cfd878e (patch) | |
| tree | e8b26c03a90edaf5214a094d3dcb1b223041b862 /lib/percpu_counter.c | |
| parent | 15b493d11fcce3c5547e3d7fb6d90e11ffe12777 (diff) | |
| download | linux-stable-86e1e98e5c6b4edab97e2b058466ef553cfd878e.tar.gz linux-stable-86e1e98e5c6b4edab97e2b058466ef553cfd878e.tar.bz2 linux-stable-86e1e98e5c6b4edab97e2b058466ef553cfd878e.zip | |
drbd: we should write meta data updates with FLUSH FUA
We used to write these with BIO_RW_BARRIER aka REQ_HARDBARRIER (unless
disabled in the configuration). The correct semantic now would be to
write with FLUSH/FUA.
For example, with activity log transactions, FUA alone is not enough, we
need the corresponding bitmap update (and all related application
updates) on stable storage as well.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'lib/percpu_counter.c')
0 files changed, 0 insertions, 0 deletions