Re: [PATCH 00/19] s390/dasd: ESE Performance improvements

On Wed, 05 Aug 2026 13:15:53 +0200, Stefan Haberland wrote:
> please apply the patch series for the upcoming merge window.
> It applies onto your for-next branch.
> 
> The series significantly improves the performance and overall usability of
> Extent Space Efficient (ESE, aka thin provisioned) DASD devices.
> 
> On a freshly provisioned ESE volume I get the following throughput
> improvements, depending on workload and setup:
> 
> [...]

Applied, thanks!

[01/19] s390/dasd: Do not complete a failed ESE read as successful
        commit: cddb447c62466f3076938ce120028d7b591f9f37
[02/19] s390/dasd: Propagate partial completion length across ERP recovery
        commit: 6fb5ba2e7e43173a3761e46f091070a8185efa14
[03/19] s390/dasd: Guard sysfs discipline callbacks against unallocated private data
        commit: 2a1780f9fc2493bd34c418a0be6fc58943afcecf
[04/19] s390/dasd: Snapshot intrc before freeing the request block
        commit: dc3e3f7306cb74066f231251602b1be5aaec7bd8
[05/19] s390/dasd: Optimize max blocks per request for track alignment
        commit: e647f351da2c6601a3e280b5c3477421e981ca73
[06/19] s390/dasd: Use GFP_KERNEL in dasd_alloc_device()
        commit: feea12d1cd8110aac009df32d3c6cd1daf117f95
[07/19] s390/dasd: Add defines for the Extended Address Volume track address
        commit: 1edac73fa2e9e8cadf19d59a49d64c681e4e45a3
[08/19] s390/dasd: Add infrastructure for ESE full-track write
        commit: 9cebfced13249fb02061dbee8a29cf91ba364519
[09/19] s390/dasd: Add range-based format-track collision detection
        commit: 05697849292011dc828b3651c159cfe694d1b5ef
[10/19] s390/dasd: Extend prepare_itcw() to support WRITE_FULL_TRACK
        commit: 44f9bf47987ec25a90d46d171b8df847d773f033
[11/19] s390/dasd: Add dasd_eckd_build_cp_tpm_writefulltrack()
        commit: 123ec1e9cb4200308ad1535c84a4cf2f81904517
[12/19] s390/dasd: Use WRITE_FULL_TRACK in ESE format handler
        commit: 791d257a21ba5241ce723a6c17f395aa0d419982
[13/19] s390/dasd: Add full_track_bias to control fulltrack write mode
        commit: 42849375e9280f2ccf492ced782e9591910d6b47
[14/19] s390/dasd: Derive adaptive ESE fulltrack heuristic from ft_bias
        commit: 4e304b2e56f09bce314ffeb4d4033ef7b8776c30
[15/19] s390/dasd: Stamp a format label into newly formatted volumes
        commit: 7d206efdc2f29240cfd815ffebfa958e2295a63e
[16/19] s390/dasd: Detect ESE volumes from the on-disk format label
        commit: 268e40548da2758851b6962a0a4ed2ab241ddbe9
[17/19] s390/dasd: Report ESE capability and format mode at device online
        commit: 6c1be943fdb6f8557596f5164ea48ae65cd0c1df
[18/19] s390/dasd: Re-enable discard support for ESE volumes
        commit: 04ea1579bc7707366de1d642115ad3b65c6171e1
[19/19] s390/dasd: Read cached unit address and LSS in the CCW build path
        commit: a600051da14b4cacc7b00685c967f40b0425ef5b

Best regards,
-- 
Jens Axboe