linux-toradex.git/kernel/cgroup/cgroup-v1.c, branch toradex_5.2.y

treewide: Add SPDX license identifier for missed files

2019-05-21T08:50:45+00:00

Add SPDX license identifiers to all files which:

 - Have no license information of any form

 - Have EXPORT_.*_SYMBOL_GPL inside which was used in the
   initial scan/conversion to ignore the file

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

cgroup: implement __cgroup_task_count() helper

2019-04-19T18:26:48+00:00

The helper is identical to the existing cgroup_task_count()
except it doesn't take the css_set_lock by itself, assuming
that the caller does.

Also, move cgroup_task_count() implementation into
kernel/cgroup/cgroup.c, as there is nothing specific to cgroup v1.

Signed-off-by: Roman Gushchin 
Signed-off-by: Tejun Heo 
Cc: kernel-team@fb.com

vfs: Add some logging to the core users of the fs_context log

2019-02-28T08:29:38+00:00

Add some logging to the core users of the fs_context log so that
information can be extracted from them as to the reason for failure.

Signed-off-by: David Howells 
Signed-off-by: Al Viro

cgroup: store a reference to cgroup_ns into cgroup_fs_context

2019-02-28T08:29:34+00:00

... and trim cgroup_do_mount() arguments (renaming it to cgroup_do_get_tree())

Signed-off-by: Al Viro

cgroup1_get_tree(): separate "get cgroup_root to use" into a separate helper

2019-02-28T08:29:33+00:00

Signed-off-by: Al Viro

cgroup_do_mount(): massage calling conventions

2019-02-28T08:29:33+00:00

pass it fs_context instead of fs_type/flags/root triple, have
it return int instead of dentry and make it deal with setting
fc->root.

Signed-off-by: Al Viro

cgroup: stash cgroup_root reference into cgroup_fs_context

2019-02-28T08:29:32+00:00

Note that this reference is *NOT* contributing to refcount of
cgroup_root in question and is valid only until cgroup_do_mount()
returns.

Signed-off-by: Al Viro

cgroup1: switch to option-by-option parsing

2019-02-28T08:29:31+00:00

[dhowells should be the author - it's carved out of his patch]

Signed-off-by: Al Viro

cgroup: take options parsing into ->parse_monolithic()

2019-02-28T08:29:30+00:00

Store the results in cgroup_fs_context.  There's a nasty twist caused
by the enabling/disabling subsystems - we can't do the checks sensitive
to that until cgroup_mutex gets grabbed.  Frankly, these checks are
complete bullshit (e.g. all,none combination is accepted if all subsystems
are disabled; so's cpusets,none and all,cpusets when cpusets is disabled,
etc.), but touching that would be a userland-visible behaviour change ;-/

So we do parsing in ->parse_monolithic() and have the consistency checks
done in check_cgroupfs_options(), with the latter called (on already parsed
options) from cgroup1_get_tree() and cgroup1_reconfigure().

Freeing the strdup'ed strings is done from fs_context destructor, which
somewhat simplifies the life for cgroup1_{get_tree,reconfigure}().

Signed-off-by: Al Viro

cgroup: fold cgroup1_mount() into cgroup1_get_tree()

2019-02-28T08:29:30+00:00

Signed-off-by: Al Viro