Re: [PATCH] drbd: always set BLK_FEAT_STABLE_WRITES

From: Jens Axboe

Date: Wed Feb 11 2026 - 12:36:28 EST



On Thu, 05 Feb 2026 18:39:29 +0100, Christoph Böhmwalder wrote:
> DRBD requires stable pages because it may read the same bio data
> multiple times for local disk I/O and network transmission, and in
> some cases for calculating checksums.
>
> The BLK_FEAT_STABLE_WRITES flag is set when the device is first
> created, but blk_set_stacking_limits() clears it whenever a
> backing device is attached. In some cases the flag may be
> inherited from the backing device, but we want it to be enabled
> at all times.
>
> [...]

Applied, thanks!

[1/1] drbd: always set BLK_FEAT_STABLE_WRITES
commit: 2ebc8d600fb907fa6b1e7095c0b6d84fc47e91ea

Best regards,
--
Jens Axboe