diff options
Diffstat (limited to 'ipc')
-rw-r--r-- | ipc/sem.c | 2 | ||||
-rw-r--r-- | ipc/shm.c | 18 |
2 files changed, 15 insertions, 5 deletions
diff --git a/ipc/sem.c b/ipc/sem.c index 19af028a3e38..cb5bb2a5df96 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -381,6 +381,7 @@ static void update_queue (struct sem_array * sma) /* hands-off: q will disappear immediately after * writing q->status. */ + smp_wmb(); q->status = error; q = n; } else { @@ -461,6 +462,7 @@ static void freeary (struct sem_array *sma, int id) n = q->next; q->status = IN_WAKEUP; wake_up_process(q->sleeper); /* doesn't sleep */ + smp_wmb(); q->status = -EIDRM; /* hands-off q */ q = n; } diff --git a/ipc/shm.c b/ipc/shm.c index 587d836d80d9..0ef4a1cf3e27 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -157,14 +157,22 @@ static void shm_close (struct vm_area_struct *shmd) static int shm_mmap(struct file * file, struct vm_area_struct * vma) { - file_accessed(file); - vma->vm_ops = &shm_vm_ops; - shm_inc(file->f_dentry->d_inode->i_ino); - return 0; + int ret; + + ret = shmem_mmap(file, vma); + if (ret == 0) { + vma->vm_ops = &shm_vm_ops; + shm_inc(file->f_dentry->d_inode->i_ino); + } + + return ret; } static struct file_operations shm_file_operations = { - .mmap = shm_mmap + .mmap = shm_mmap, +#ifndef CONFIG_MMU + .get_unmapped_area = shmem_get_unmapped_area, +#endif }; static struct vm_operations_struct shm_vm_ops = { |