linux-kernel - [PATCH 0/5] staging:lustre: split kernel comm between user and kernel

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Message-Id: <1445630357-27149-1-git-send-email-jsimmons@infradead.org>
Date:	Fri, 23 Oct 2015 15:59:12 -0400
From:	James Simmons <jsimmons@...radead.org>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devel@...verdev.osuosl.org, Oleg Drokin <oleg.drokin@...el.com>,
	Andreas Dilger <andreas.dilger@...el.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	lustre-devel@...ts.lustre.org,
	James Simmons <jsimmons@...radead.org>,
	frank zago <fzago@...y.com>
Subject: [PATCH 0/5] staging:lustre: split kernel comm between user and kernel

The kernel communication code used for HSM and changelog is
entangled. Move the user space bits into the liblustreapi. This will
also help for a possible relicensing. The kernel portion is also moved
from libcfs to obdclass.

The original libcfs_kernelcomm.h header is split into three parts:

  * lustre_kernelcomm.h, a new header for the kernel parts;
  * uapi_kernelcomm.h, a new header for the data structures shared
    between userspace and kernelspace;
  * lustreapi_internal.h receives the private liblustreapi prototypes.

The original code in kernel_user_comm.c is split into two parts:

  * obdclass/kernelcomm.c for the kernel part. filp_user_write() was
    moved there, and linux-fs.c deleted;
  * liblustreapi_kernelconn.c for the user part. The calls to CDEBUG
    have been removed, and calls to CERROR have been transformed to
    llapi_err_noerrno. The type lustre_kernelcomm has been removed and
    replace by struct lustre_kernelcomm.

Various names and filenames have been harmonized to *kernelcomm*.

The unused symbol KUC_FL_BLOCK has been removed.

Signed-off-by: frank zago <fzago@...y.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6245
Reviewed-on: http://review.whamcloud.com/14270
Reviewed-by: Nathan Rutman <nathan.rutman@...gate.com>
Reviewed-by: James Simmons <uja.ornl@...oo.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@...el.com>
Reviewed-by: John L. Hammond <john.hammond@...el.com>
Reviewed-by: Oleg Drokin <oleg.drokin@...el.com>

Henri Doreau (1):
  staging:lustre: Prevent duplicate CT registrations

James Simmons (1):
  staging:lustre: kg_sem semaphore handling is incorrectly

frank zago (3):
  staging:lustre: move kernel_user_comm.c from libcfs to lustre
  staging:lustre: split kernel comm between user and kernel
  staging:lustre: Update license and copyright for kernel comm

 .../staging/lustre/include/linux/libcfs/libcfs.h   |    1 -
 .../staging/lustre/lustre/include/lustre_export.h  |    7 +++
 .../lustre/lustre/include/lustre_kernelcomm.h      |   56 ++++++++++++++++++++
 .../include/uapi_kernelcomm.h}                     |   52 +++++--------------
 drivers/staging/lustre/lustre/libcfs/Makefile      |    5 +-
 drivers/staging/lustre/lustre/llite/dir.c          |    1 +
 drivers/staging/lustre/lustre/lmv/lmv_obd.c        |   43 +++++++++++-----
 drivers/staging/lustre/lustre/mdc/lproc_mdc.c      |    2 +
 drivers/staging/lustre/lustre/mdc/mdc_request.c    |   23 +++++---
 drivers/staging/lustre/lustre/obdclass/Makefile    |    7 ++-
 drivers/staging/lustre/lustre/obdclass/genops.c    |    1 +
 .../kernel_user_comm.c => obdclass/kernelcomm.c}   |   40 +++++++-------
 12 files changed, 150 insertions(+), 88 deletions(-)
 create mode 100644 drivers/staging/lustre/lustre/include/lustre_kernelcomm.h
 rename drivers/staging/lustre/{include/linux/libcfs/libcfs_kernelcomm.h => lustre/include/uapi_kernelcomm.h} (61%)
 rename drivers/staging/lustre/lustre/{libcfs/kernel_user_comm.c => obdclass/kernelcomm.c} (88%)

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