[0/5] netfs, cifs: Further fixes

Message

David Howells Aug. 23, 2024, 4:12 p.m. UTC

Hi Christian, Steve,

Here are some more fixes to cifs and one to netfs:

 (1) Fix cifs FALLOC_FL_PUNCH_HOLE support as best I can.  If it's going to
     punch a hole in dirty data in the pagecacne, invalidating that data
     may result in the EOF not being moved correctly.  The set-zero and the
     eof-move RPC ops really need compounding to avoid third-party
     interference.

 (2) Adjust three debugging output statements.  Not strictly a fix, so
     could be dropped.  Including the subreq ID in some extra debug lines
     helps a bit, though.

 (3) Fix netfslib's short read retry to reset the buffer iterator otherwise
     the wrong part of the buffer may get written on.

 (4) Further fix the early EOF detection in cifs read.

 (5) Further fixes for cifs credit handling.

The patches can also be found here:

	https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=netfs-fixes

Thanks,
David

David Howells (5):
  cifs: Fix FALLOC_FL_PUNCH_HOLE support
  netfs, cifs: Improve some debugging bits
  netfs: Fix missing iterator reset on retry of short read
  cifs: Fix short read handling
  cifs: Fix credit handling

 fs/netfs/io.c           |  3 ++-
 fs/smb/client/file.c    |  9 +++++++++
 fs/smb/client/smb2ops.c | 34 ++++++++++++++++++++++++++++++----
 fs/smb/client/smb2pdu.c | 12 ++----------
 fs/smb/client/trace.h   |  1 +
 5 files changed, 44 insertions(+), 15 deletions(-)

Comments

David Howells Aug. 23, 2024, 4:19 p.m. UTC | #1

Note that whilst testing my cifs fixes with the generic/075 and generic/112
xfstests, the tests occasionally hit a bug in Samba whereby llseek() fails
because there are too many extents in the server file for the server to
report.  I've noted this before:

	https://lore.kernel.org/linux-cifs/[e-mail]/

is there a fix for this I can try?

David