diff options
Diffstat (limited to 'arch/x86/kernel/cpu')
| -rw-r--r-- | arch/x86/kernel/cpu/resctrl/pseudo_lock.c | 6 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/resctrl/rdtgroup.c | 6 |
2 files changed, 6 insertions, 6 deletions
diff --git a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c index 4bd28b388a1a..0daf2f1cf7a8 100644 --- a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c +++ b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c @@ -1326,9 +1326,9 @@ int rdtgroup_pseudo_lock_create(struct rdtgroup *rdtgrp) * pseudo-locked region will still be here on return. * * The mutex has to be released temporarily to avoid a potential - * deadlock with the mm->mmap_sem semaphore which is obtained in - * the device_create() and debugfs_create_dir() callpath below - * as well as before the mmap() callback is called. + * deadlock with the mm->mmap_lock which is obtained in the + * device_create() and debugfs_create_dir() callpath below as well as + * before the mmap() callback is called. */ mutex_unlock(&rdtgroup_mutex); diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c index d7cb5ab0d1f0..23b4b61319d3 100644 --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c @@ -3199,10 +3199,10 @@ int __init rdtgroup_init(void) * during the debugfs directory creation also &sb->s_type->i_mutex_key * (the lockdep class of inode->i_rwsem). Other filesystem * interactions (eg. SyS_getdents) have the lock ordering: - * &sb->s_type->i_mutex_key --> &mm->mmap_sem - * During mmap(), called with &mm->mmap_sem, the rdtgroup_mutex + * &sb->s_type->i_mutex_key --> &mm->mmap_lock + * During mmap(), called with &mm->mmap_lock, the rdtgroup_mutex * is taken, thus creating dependency: - * &mm->mmap_sem --> rdtgroup_mutex for the latter that can cause + * &mm->mmap_lock --> rdtgroup_mutex for the latter that can cause * issues considering the other two lock dependencies. * By creating the debugfs directory here we avoid a dependency * that may cause deadlock (even though file operations cannot |