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ublk: rework partition handling#585

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ublk: rework partition handling#585
blktests-ci[bot] wants to merge 4 commits intolinus-master_basefrom
series/1056476=>linus-master

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@blktests-ci blktests-ci bot commented Feb 23, 2026

Pull request for series with
subject: ublk: rework partition handling
version: 1
url: https://patchwork.kernel.org/project/linux-block/list/?series=1056476

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blktests-ci bot commented Feb 23, 2026

Upstream branch: 6de23f8
series: https://patchwork.kernel.org/project/linux-block/list/?series=1056476
version: 1

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Upstream branch: 6de23f8
series: https://patchwork.kernel.org/project/linux-block/list/?series=1056476
version: 1

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from a7c16f4 to a6d87df Compare February 23, 2026 12:40
@blktests-ci blktests-ci bot force-pushed the linus-master_base branch from c90f83b to c475e20 Compare February 25, 2026 11:14
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blktests-ci bot commented Feb 25, 2026

Upstream branch: 7dff99b
series: https://patchwork.kernel.org/project/linux-block/list/?series=1056476
version: 1

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from a6d87df to 5260c17 Compare February 25, 2026 11:19
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blktests-ci bot commented Feb 27, 2026

Upstream branch: 7dff99b
series: https://patchwork.kernel.org/project/linux-block/list/?series=1059052
version: 2

@blktests-ci blktests-ci bot added V2 and removed V1 V1-ci-fail labels Feb 27, 2026
@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from 5260c17 to 83578cd Compare February 27, 2026 15:13
@blktests-ci blktests-ci bot force-pushed the linus-master_base branch from c475e20 to 14f6b99 Compare February 27, 2026 16:24
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blktests-ci bot commented Feb 27, 2026

Upstream branch: a75cb86
series: https://patchwork.kernel.org/project/linux-block/list/?series=1059052
version: 2

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from 83578cd to e863da2 Compare February 27, 2026 16:36
@blktests-ci blktests-ci bot force-pushed the linus-master_base branch from 14f6b99 to 856dc37 Compare February 27, 2026 22:07
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blktests-ci bot commented Feb 27, 2026

Upstream branch: 4d349ee
series: https://patchwork.kernel.org/project/linux-block/list/?series=1059052
version: 2

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from e863da2 to aee2fa4 Compare February 27, 2026 22:15
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blktests-ci bot commented Feb 28, 2026

Upstream branch: 4d349ee
series: https://patchwork.kernel.org/project/linux-block/list/?series=1059052
version: 2

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from aee2fa4 to a68d189 Compare February 28, 2026 10:19
@blktests-ci blktests-ci bot force-pushed the linus-master_base branch from 856dc37 to 40967f0 Compare March 2, 2026 09:22
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blktests-ci bot commented Mar 2, 2026

Upstream branch: 11439c4
series: https://patchwork.kernel.org/project/linux-block/list/?series=1059052
version: 2

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from a68d189 to ed780c1 Compare March 2, 2026 09:30
@blktests-ci blktests-ci bot force-pushed the linus-master_base branch from 40967f0 to d4e9bad Compare March 2, 2026 23:54
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blktests-ci bot commented Mar 3, 2026

Upstream branch: af4e9ef
series: https://patchwork.kernel.org/project/linux-block/list/?series=1059052
version: 2

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from ed780c1 to 6eac9d6 Compare March 3, 2026 00:02
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blktests-ci bot commented Mar 4, 2026

Upstream branch: af4e9ef
series: https://patchwork.kernel.org/project/linux-block/list/?series=1059052
version: 2

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from 6eac9d6 to 9275b85 Compare March 4, 2026 08:00
@blktests-ci blktests-ci bot force-pushed the linus-master_base branch from d0e1bed to 6b51c57 Compare March 4, 2026 09:34
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Upstream branch: 0031c06
series: https://patchwork.kernel.org/project/linux-block/list/?series=1059052
version: 2

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from 9275b85 to 722149a Compare March 4, 2026 09:44
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Upstream branch: ecc64d2
series: https://patchwork.kernel.org/project/linux-block/list/?series=1059052
version: 2

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from 722149a to 89c257a Compare March 4, 2026 20:06
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blktests-ci bot commented Mar 5, 2026

Upstream branch: c107785
series: https://patchwork.kernel.org/project/linux-block/list/?series=1059052
version: 2

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from 89c257a to e039c4b Compare March 5, 2026 12:29
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Upstream branch: 5ee8dbf
series: https://patchwork.kernel.org/project/linux-block/list/?series=1059052
version: 2

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from e039c4b to d24de16 Compare March 5, 2026 21:46
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Upstream branch: 1f318b9
series: https://patchwork.kernel.org/project/linux-block/list/?series=1059052
version: 2

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from d24de16 to 7773a38 Compare March 10, 2026 06:40
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Upstream branch: None
series: https://patchwork.kernel.org/project/linux-block/list/?series=1059052
version: 2

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from 7773a38 to 2601411 Compare March 11, 2026 08:15
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blktests-ci bot commented Mar 12, 2026

Upstream branch: 80234b5
series: https://patchwork.kernel.org/project/linux-block/list/?series=1059052
version: 2

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from 2601411 to 7956b12 Compare March 12, 2026 02:11
@blktests-ci blktests-ci bot force-pushed the linus-master_base branch from 0dd9afc to 2e598ed Compare March 13, 2026 07:29
zazolabs added 4 commits March 13, 2026 16:46
@zazolabs @kawasaki
ublk: cleanup partition flags handling and introduce UBLK_F_NO_PARTITONS
d045df1 
Currently the code misuse GD_SUPPRESS_PART_SCAN flag
as it tries to use it as a switch for the auto partition scan.
To fully disable creation of partitions GENHD_FL_NO_PART must
be used, switch code to use it instead GD_SUPPRESS_PART_SCAN.

Rules for partitions become:
 - Unprivileged daemons - never scan partitions, they have
GENHD_FL_NO_PART always set - they are devices without partitions.

 - Trusted daemons - by default have partitions enabled,
automatic initial scan can be disabled via UBLK_F_NO_AUTO_PART_SCAN flag.
Partitions can be disabled via UBLK_F_NO_PARTITIONS flag.

Rework the code to work as described above:
- remove checks in ublk_partition_scan_work and rely on
the caller to schedule the work only if it has to be done.
- set GENHD_FL_NO_PART on unprivileged devices
- set GENHD_FL_NO_PART depending on UBLK_F_NO_PARTITIONS on trusted
devices.

Fixes: 8443e20 ("ublk: add UBLK_F_NO_AUTO_PART_SCAN feature flag")
Signed-off-by: Alexander Atanasov <alex@zazolabs.com>
@zazolabs @kawasaki
selftests: ublk: rework partitions tests for new flags
7cbb844 
To support new flag - UBLK_F_NO_PARTITIONS
add kublk argument:
-m, --no_partitions - disable partitions on trusted devices
Add short argument for  UBLK_F_NO_AUTO_PART_SCAN
-p, --no_auto_part_scan - disable initial partition scan

Update test cases to use the new arguments

Fix long lines while at it.

Signed-off-by: Alexander Atanasov <alex@zazolabs.com>
@zazolabs @kawasaki
ublk: document partition flags, kublk and update external links
da76900 
Add section about partition handling on ublk devices.
Document UBLK_F_NO_PARTITIONS and UBLK_F_NO_AUTO_PART_SCAN.

Add section for kublk to be used as reference.

Update extenal github links - repos have moved to ublk-org
and README is renamed to README.rst

Signed-off-by: Alexander Atanasov <alex@zazolabs.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
@zazolabs @kawasaki
selftests: ublk: cleanup kublk.h
893d947 
Arguments are handled via flags so
remove unused no_auto_part_scan bitfield.

Signed-off-by: Alexander Atanasov <alex@zazolabs.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
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blktests-ci bot commented Mar 13, 2026

Upstream branch: 0257f64
series: https://patchwork.kernel.org/project/linux-block/list/?series=1059052
version: 2

@blktests-ci blktests-ci bot force-pushed the series/1056476=>linus-master branch from 7956b12 to 893d947 Compare March 13, 2026 07:47
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