[PATCH v3 0/6] xfstests: add missing _require_scratch checks

[Prabhakar Pujeri <prabhakar.pujeri@dell.com>]

Fully consolidated resend of all remaining _require_scratch fixes, as
requested by Zorro on the v2 cover.

All of these patches add a single missing _require_scratch check; with
the exception of btrfs/333 (which places it at the top of
_require_btrfs_iouring_encoded_read(), per Qu Wenruo's earlier review)
they are plain one-line adds directly after the resource checks.  No
other changes.

v3:
- Merge ALL six single-line fixes into one series, per Zorro's request
  of 2026-09-03 on the v2 cover letter.
- Add Johannes Thumshirn's R-b for btrfs/273 and Chao Yu's R-b for
  f2fs/015,016 (both since v2).
- No code changes; patch contents are identical to the v2/v3 versions
  previously posted individually.

v2 pieces (this and the three it pulls forward) for reference:
- [PATCH v2 0/3] https://lore.kernel.org/fstests/20260903035344.752-1-prabhakar.pujeri@dell.com/
- btrfs/333 v3 https://lore.kernel.org/fstests/20260831104200.2269-1-prabhakar.pujeri@dell.com/ (v1; v3 was posted but is not archived)
- btrfs/273 v2 https://lore.kernel.org/fstests/20260902050145.2439-1-prabhakar.pujeri@dell.com/ (v1; v2 was posted but is not archived)
- overlay/081 v2 https://lore.kernel.org/fstests/20260901132438.759-1-prabhakar.pujeri@dell.com/

Reviewed-bys carried (per the individual threads):
- Darrick J. Wong: generic/590,735 and generic/795
- Zorro Lang + Chao Yu: f2fs/015,016
- Qu Wenruo: btrfs/333 (v3) and btrfs/273 (v2)
- Johannes Thumshirn: btrfs/273 (v2, second R-b)
- Amir Goldstein: overlay/081 (as Acked/Reviewed on v1; kept)

Prabhakar Pujeri (6):
  generic/590,735: add missing _require_scratch check
  generic/795: add missing _require_scratch check
  f2fs/015,016: add missing _require_scratch checks
  btrfs/333: require scratch before checking encoded reads
  btrfs/273: add missing _require_scratch check
  overlay/081: add missing _require_scratch check

 common/btrfs      | 1 +
 tests/btrfs/273   | 1 +
 tests/f2fs/015    | 1 +
 tests/f2fs/016    | 1 +
 tests/generic/590 | 1 +
 tests/generic/735 | 1 +
 tests/generic/795 | 2 ++
 tests/overlay/081 | 1 +
 8 files changed, 9 insertions(+)

Base: upstream master a370dcbed43563f0462801e889e0eceb93c7cfad
-- 
2.55.0