[PATCH v2 00/16] SMB 2.1/3 multicredit requests for reading/writing

[Pavel Shilovsky]

The goal of this patchset is to add large MTU/multicredits support for reading and writing from the CIFS client to servers that support SMB 2.1 and higher versions of the protocol.

The first patch fixes a reconnect bug in reading code. Other patches simplify the read/write code (2-4,7,8,11,13), fix rsize/wsize usage bug on reconnects (5,6,9,12,14,15) and introduce multicredits support (10,16).

Changes since v1:
1) read part is added;
2) several reconnects bug (related to the patchset and not) is fixed;
3) overall patch simplification/refactoring is done.

Pavel Shilovsky (16):
CIFS: Fix async reading on reconnects
CIFS: Separate page processing from writepages
CIFS: Separate page sending from writepages
CIFS: Separate pages initialization from writepages
CIFS: Fix wsize usage in writepages
CIFS: Fix cifs_writev_requeue when wsize changes
CIFS: Separate filling pages from iovec write
CIFS: Separate writing from iovec write
CIFS: Fix wsize usage in iovec write
CIFS: Use multicredits for SMB 2.1/3 writes
CIFS: Separate page search from readpages
CIFS: Fix rsize usage in readpages
CIFS: Separate page reading from user read
CIFS: Fix rsize usage in user read
CIFS: Fix rsize usage for sync read
CIFS: Use multicredits for SMB 2.1/3 reads

fs/cifs/cifsglob.h | 18 ++
fs/cifs/cifsproto.h | 3 +
fs/cifs/cifssmb.c | 88 +++--
fs/cifs/file.c | 846 +++++++++++++++++++++++++++++-------------------
fs/cifs/smb1ops.c | 8 +
fs/cifs/smb2ops.c | 64 +++-
fs/cifs/smb2pdu.c | 63 +++-
fs/cifs/smb2transport.c | 5 +
fs/cifs/transport.c | 25 +-
9 files changed, 738 insertions(+), 382 deletions(-)