[GIT PULL] fs mapping helpers update

From: Christian Brauner
Date: Tue Apr 27 2021 - 07:43:44 EST


Hi Linus,

/* Summary */
This adds kernel-doc to all new idmapping helpers and improves their naming
which was triggered by a discussion with some fs developers. Some of the names
are based on suggestions by Vivek and Al. We also remove the open-coded
permission checking in a few places with simple helpers. Overall this should
lead to more clarity make it easier to maintain.

The following changes since commit 0d02ec6b3136c73c09e7859f0d0e4e2c4c07b49b:

Linux 5.12-rc4 (2021-03-21 14:56:43 -0700)

are available in the Git repository at:

git@xxxxxxxxxxxxxxxxxxx:pub/scm/linux/kernel/git/brauner/linux tags/fs.idmapped.helpers.v5.13

for you to fetch changes up to db998553cf11dd697485ac6142adbb35d21fff10:

fs: introduce two inode i_{u,g}id initialization helpers (2021-03-23 11:15:26 +0100)

/* Testing */
All patches are based on v5.12-rc4 and have been sitting in linux-next. No
build failures or warnings were observed. All old and new tests are passing.

ubuntu@f2-vm:~/src/git/xfstests$ sudo ./check -g idmapped
FSTYP -- xfs (debug)
PLATFORM -- Linux/x86_64 f2-vm 5.12.0-rc6-idmapped-cfebad8730dd #387 SMP PREEMPT Tue Apr 27 10:39:29 UTC 2021
MKFS_OPTIONS -- -f -bsize=4096 /dev/loop1
MOUNT_OPTIONS -- /dev/loop1 /mnt/scratch

generic/633 files ... 27s
xfs/152 files ... 68s
xfs/153 files ... 36s
Ran: generic/633 xfs/152 xfs/153
Passed all 3 tests

/* Conflicts */
At the time of creating this PR no merge conflicts were reported from
linux-next and no merge conflicts showed up doing a test-merge with current
mainline.

(Note, in case you care about this at all I changed my tag naming pattern
simply because I ran into limitations with branch naming in git using "/"
separators and I like to have a 1:1 correspondence between the branch and the
tag name.)

Please consider pulling these changes from the signed fs.idmapped.helpers.v5.13 tag.

----------------------------------------------------------------
fs.idmapped.helpers.v5.13

----------------------------------------------------------------
Christian Brauner (4):
fs: document mapping helpers
fs: document and rename fsid helpers
fs: introduce fsuidgid_has_mapping() helper
fs: introduce two inode i_{u,g}id initialization helpers

fs/ext4/ialloc.c | 2 +-
fs/inode.c | 4 +-
fs/namei.c | 11 ++---
fs/xfs/xfs_inode.c | 10 ++---
fs/xfs/xfs_symlink.c | 4 +-
include/linux/fs.h | 124 ++++++++++++++++++++++++++++++++++++++++++++++++++-
6 files changed, 135 insertions(+), 20 deletions(-)