The options "sync", "async", "dirsync", "lazytime", "nolazytime", "mand" and "nomand" make no sense for the cgroup filesystem. If these options are supplied to fsconfig(FSCONFIG_SET_FLAG), then return -EINVAL instead of silently ignoring the option.
Any implementation, such as mount(8) that needs to parse this option without failing should simply ignore the return value from fsconfig(). Signed-off-by: Miklos Szeredi <[email protected]> --- kernel/cgroup/cgroup-v1.c | 2 +- kernel/cgroup/cgroup.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/cgroup/cgroup-v1.c b/kernel/cgroup/cgroup-v1.c index f960e6149311..1f50d59f7f4e 100644 --- a/kernel/cgroup/cgroup-v1.c +++ b/kernel/cgroup/cgroup-v1.c @@ -929,7 +929,7 @@ int cgroup1_parse_param(struct fs_context *fc, struct fs_parameter *param) struct fs_parse_result result; int ret, opt, i; - ret = vfs_parse_sb_flag(fc, param); + ret = vfs_parse_ro_rw(fc, param); if (ret != -ENOPARAM) return ret; diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 93890285b510..f2e86b3942b3 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -1836,7 +1836,7 @@ static int cgroup2_parse_param(struct fs_context *fc, struct fs_parameter *param struct fs_parse_result result; int ret, opt; - ret = vfs_parse_sb_flag(fc, param); + ret = vfs_parse_ro_rw(fc, param); if (ret != -ENOPARAM) return ret; -- 2.21.0
