diff options
Diffstat (limited to 'fs/hugetlbfs/inode.c')
| -rw-r--r-- | fs/hugetlbfs/inode.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 90c07ffb7800a3..d5aa417d895601 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -720,12 +720,13 @@ static unsigned long hugetlbfs_counter(void) static int can_do_hugetlb_shm(void) { return likely(capable(CAP_IPC_LOCK) || - in_group_p(sysctl_hugetlb_shm_group)); + in_group_p(sysctl_hugetlb_shm_group) || + can_do_mlock()); } struct file *hugetlb_zero_setup(size_t size) { - int error; + int error = -ENOMEM; struct file *file; struct inode *inode; struct dentry *dentry, *root; @@ -738,6 +739,9 @@ struct file *hugetlb_zero_setup(size_t size) if (!is_hugepage_mem_enough(size)) return ERR_PTR(-ENOMEM); + if (!user_shm_lock(size, current->user)) + return ERR_PTR(-ENOMEM); + root = hugetlbfs_vfsmount->mnt_root; snprintf(buf, 16, "%lu", hugetlbfs_counter()); quick_string.name = buf; @@ -745,7 +749,7 @@ struct file *hugetlb_zero_setup(size_t size) quick_string.hash = 0; dentry = d_alloc(root, &quick_string); if (!dentry) - return ERR_PTR(-ENOMEM); + goto out_shm_unlock; error = -ENFILE; file = get_empty_filp(); @@ -772,6 +776,8 @@ out_file: put_filp(file); out_dentry: dput(dentry); +out_shm_unlock: + user_shm_unlock(size, current->user); return ERR_PTR(error); } |