rtc: HYM8563: include slab.h, prepare for 2.6.36

[firefly-linux-kernel-4.4.55.git] / ipc / shm.c

diff --git a/ipc/shm.c b/ipc/shm.c
index 464694e0aa4a19c74b973a2a69f0d88049b9c512..d30732c97599d6e0a516ccfc305cef1d76bc2304 100644 (file)
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -101,6 +101,7 @@ static void do_shm_rmid(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp)
 void shm_exit_ns(struct ipc_namespace *ns)
 {
        free_ipcs(ns, &shm_ids(ns), do_shm_rmid);
+       idr_destroy(&ns->ids[IPC_SHM_IDS].ipcs_idr);
 }
 #endif
 
@@ -290,28 +291,28 @@ static unsigned long shm_get_unmapped_area(struct file *file,
        unsigned long flags)
 {
        struct shm_file_data *sfd = shm_file_data(file);
-       return get_unmapped_area(sfd->file, addr, len, pgoff, flags);
-}
-
-int is_file_shm_hugepages(struct file *file)
-{
-       int ret = 0;
-
-       if (file->f_op == &shm_file_operations) {
-               struct shm_file_data *sfd;
-               sfd = shm_file_data(file);
-               ret = is_file_hugepages(sfd->file);
-       }
-       return ret;
+       return sfd->file->f_op->get_unmapped_area(sfd->file, addr, len,
+                                               pgoff, flags);
 }
 
 static const struct file_operations shm_file_operations = {
        .mmap           = shm_mmap,
        .fsync          = shm_fsync,
        .release        = shm_release,
+};
+
+static const struct file_operations shm_file_operations_huge = {
+       .mmap           = shm_mmap,
+       .fsync          = shm_fsync,
+       .release        = shm_release,
        .get_unmapped_area      = shm_get_unmapped_area,
 };
 
+int is_file_shm_hugepages(struct file *file)
+{
+       return file->f_op == &shm_file_operations_huge;
+}
+
 static const struct vm_operations_struct shm_vm_ops = {
        .open   = shm_open,     /* callback for a new vm-area open */
        .close  = shm_close,    /* callback for when the vm-area is released */
@@ -473,6 +474,7 @@ static inline unsigned long copy_shmid_to_user(void __user *buf, struct shmid64_
            {
                struct shmid_ds out;
 
+               memset(&out, 0, sizeof(out));
                ipc64_perm_to_ipc_perm(&in->shm_perm, &out.shm_perm);
                out.shm_segsz   = in->shm_segsz;
                out.shm_atime   = in->shm_atime;
@@ -889,7 +891,10 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr)
        if (!sfd)
                goto out_put_dentry;
 
-       file = alloc_file(path.mnt, path.dentry, f_mode, &shm_file_operations);
+       file = alloc_file(path.mnt, path.dentry, f_mode,
+                       is_file_hugepages(shp->shm_file) ?
+                               &shm_file_operations_huge :
+                               &shm_file_operations);
        if (!file)
                goto out_free;
        ima_counts_get(file);