Re: [Linux-kernel-mentees] [PATCH v3 0/4] PCI: Clean up pci-sysfs.c
From: Bjorn Helgaas
Date: Mon Aug 19 2019 - 18:42:14 EST
On Thu, Aug 15, 2019 at 09:33:49AM -0600, Kelsey Skunberg wrote:
> This series is designed to clean up device attributes and permissions in
> pci-sysfs.c. Then move the sysfs SR-IOV functions from pci-sysfs.c to
> iov.c for better organization.
> Patch 1: Define device attributes with DEVICE_ATTR* instead of __ATTR*.
> Patch 2: Change permissions from symbolic to the preferred octal.
> Patch 3: Change DEVICE_ATTR() with 0220 permissions to DEVICE_ATTR_WO().
> Patch 4: Move sysfs SR-IOV functions to iov.c to keep the feature's code
> Patch 1, 2, and 4 will report unusual permissions '0664' used from the
> static DEVICE_ATTR(sriov_numvfs, 0664, sriov_numvfs_show,
> static DEVICE_ATTR(sriov_drivers_autoprobe, 0664,
> This series preserves the existing permissions set in:
> commit 0e7df22401a3 ("PCI: Add sysfs sriov_drivers_autoprobe to control
> VF driver binding")
> commit 1789382a72a5 ("PCI: SRIOV control and status via sysfs")
> Either adding a comment verifying permissions are okay or changing the
> permissions is to be completed with a new patch.
> Changes since v1:
> Add patch 1 and 2 to fix the way device attributes are defined
> and change permissions from symbolic to octal. Patch 4 which moves
> sysfs SR-IOV functions to iov.c will then apply cleaner.
> Changes since v2:
> Patch 1: Commit log updated. Example shows DEVICE_ATTR_RO()
> example instead of DEVICE_ATTR(). DEVICE_ATTR() should be avoided
> unless the files have unusual permissions. Changed to reflect a
> more encouraged usage. Also updated regex to be accurate.
> Patch 3: [NEW] Add patch to change DEVICE_ATTR() with 0220
> permissions to DEVICE_ATTR_WO().
> Updated series log to reflect new patch and unusual permissions
> Kelsey Skunberg (4):
> PCI: sysfs: Define device attributes with DEVICE_ATTR*
> PCI: sysfs: Change permissions from symbolic to octal
> PCI: sysfs: Change DEVICE_ATTR() to DEVICE_ATTR_WO()
> PCI/IOV: Move sysfs SR-IOV functions to iov.c
> drivers/pci/iov.c | 168 ++++++++++++++++++++++++++++++
> drivers/pci/pci-sysfs.c | 223 ++++------------------------------------
> drivers/pci/pci.h | 2 +-
> 3 files changed, 191 insertions(+), 202 deletions(-)
Thanks, I applied the new DEVICE_ATTR_WO() patch as the *second* patch
so the two DEVICE_ATTR patches were together. I added Greg and Don's
Reviewed-by to all and Kuppuswamy's to the last. This is all on
pci/virtualization for v5.4.