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| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2016-06-14 00:26:21 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-06-13 21:43:05 -0600 |
| commit | 69ba1ee9360a6ed4adb3168fd93db430a4276332 (patch) | |
| tree | 28555aad1824906e29354236f8a215d4f030b7c9 /drivers/block/drbd/drbd_actlog.c | |
| parent | dd4f699da674010c58d7a2534215b4ca1ff13b13 (diff) | |
| download | linux-stable-69ba1ee9360a6ed4adb3168fd93db430a4276332.tar.gz linux-stable-69ba1ee9360a6ed4adb3168fd93db430a4276332.tar.bz2 linux-stable-69ba1ee9360a6ed4adb3168fd93db430a4276332.zip | |
drbd: possibly disable discard support, if backend has discard_zeroes_data=0
Now that we have the discard_zeroes_if_aligned setting, we should also
check it when setting up our queue parameters on the primary,
not only on the receiving side.
We announce discard support,
UNLESS
* we are connected to a peer that does not support TRIM
on the DRBD protocol level. Otherwise, it would either discard, or
do a fallback to zero-out, depending on its backend and configuration.
* our local backend does not support discards,
or (discard_zeroes_data=0 AND discard_zeroes_if_aligned=no).
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block/drbd/drbd_actlog.c')
0 files changed, 0 insertions, 0 deletions