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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2019-01-05 00:38:03 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2019-02-28 03:29:29 -0500 |
| commit | 90129625d9203a917fc1d3e4768976ba90d71b44 (patch) | |
| tree | 297cd4933c7fb8a450bfcd30c6649882a64cff97 /kernel/cgroup/cgroup-v1.c | |
| parent | ipc: Convert mqueue fs to fs_context (diff) | |
| download | linux-dev-90129625d9203a917fc1d3e4768976ba90d71b44.tar.xz linux-dev-90129625d9203a917fc1d3e4768976ba90d71b44.zip | |
cgroup: start switching to fs_context
Unfortunately, cgroup is tangled into kernfs infrastructure.
To avoid converting all kernfs-based filesystems at once,
we need to untangle the remount part of things, instead of
having it go through kernfs_sop_remount_fs(). Fortunately,
it's not hard to do.
This commit just gets cgroup/cgroup1 to use fs_context to
deliver options on mount and remount paths. Parsing those
is going to be done in the next commits; for now we do
pretty much what legacy case does.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to '')
| -rw-r--r-- | kernel/cgroup/cgroup-v1.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/kernel/cgroup/cgroup-v1.c b/kernel/cgroup/cgroup-v1.c index f94a7229974e..e377e19dd3e6 100644 --- a/kernel/cgroup/cgroup-v1.c +++ b/kernel/cgroup/cgroup-v1.c @@ -1046,17 +1046,19 @@ static int parse_cgroupfs_options(char *data, struct cgroup_sb_opts *opts) return 0; } -static int cgroup1_remount(struct kernfs_root *kf_root, int *flags, char *data) +int cgroup1_reconfigure(struct fs_context *fc) { - int ret = 0; + struct cgroup_fs_context *ctx = cgroup_fc2context(fc); + struct kernfs_root *kf_root = kernfs_root_from_sb(fc->root->d_sb); struct cgroup_root *root = cgroup_root_from_kf(kf_root); + int ret = 0; struct cgroup_sb_opts opts; u16 added_mask, removed_mask; cgroup_lock_and_drain_offline(&cgrp_dfl_root.cgrp); /* See what subsystems are wanted */ - ret = parse_cgroupfs_options(data, &opts); + ret = parse_cgroupfs_options(ctx->data, &opts); if (ret) goto out_unlock; @@ -1106,7 +1108,6 @@ static int cgroup1_remount(struct kernfs_root *kf_root, int *flags, char *data) struct kernfs_syscall_ops cgroup1_kf_syscall_ops = { .rename = cgroup1_rename, .show_options = cgroup1_show_options, - .remount_fs = cgroup1_remount, .mkdir = cgroup_mkdir, .rmdir = cgroup_rmdir, .show_path = cgroup_show_path, |