[PATCH v8 0/5] smb: fix fallocate and allocation accounting

[Huiwen He <huiwen.he@linux.dev>]

From: Huiwen He <hehuiwen@kylinos.cn>

Changes in v8:

- Add back the overlapping allocated-range fix as patch 2. This patch
  was dropped after v5, but it addresses Shashiko's review comments
  about overlapping allocated ranges and malformed range lengths.

  Although I could not reproduce this locally, a malicious or unusualserver
  could theoretically return such a range.

- Rebase the later patches on top of the restored patch 2. No other
  behavior change is intended.

The following patch merged into #ksmbd-for-next-next is not resent:
  - smb/server: map SET_INFO ENOSPC to disk full

The following patches are already in upstream and are not resent:
  - 898d280f4e4d smb/client: name the default fallocate mode
  - 2a4b3d2db5c6 smb/client: preserve errors from smb2_set_sparse()
  - 99cd0a6eeb6c smb/client: do not account EOF extension as allocation

Link to v7:
https://lore.kernel.org/linux-cifs/20260702151255.886945-1-huiwen.he@linux.dev

Thanks,
Huiwen

Huiwen He (5):
  smb/client: refresh allocation size after duplicate extents
  smb/client: handle overlapping allocated ranges in fallocate
  smb/client: reduce fallocate zero buffer allocation
  smb/client: emulate small EOF-extending mode 0 fallocate ranges
  smb/client: refresh allocation after EOF-extending fallocate

 fs/smb/client/cifsfs.c    |  10 ++-
 fs/smb/client/smb2ops.c   | 172 +++++++++++++++++++++++++++++++++-----
 fs/smb/client/smb2pdu.c   |  19 +++++
 fs/smb/client/smb2proto.h |   3 +
 fs/smb/common/fscc.h      |   5 ++
 fs/smb/server/smb2pdu.h   |   4 -
 6 files changed, 185 insertions(+), 28 deletions(-)

-- 
2.43.0