Update Linux to v5.4.148
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz
Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index a478df0..358398b 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -76,7 +76,7 @@
static const struct fs_parameter_spec hugetlb_param_specs[] = {
fsparam_u32 ("gid", Opt_gid),
fsparam_string("min_size", Opt_min_size),
- fsparam_u32 ("mode", Opt_mode),
+ fsparam_u32oct("mode", Opt_mode),
fsparam_string("nr_inodes", Opt_nr_inodes),
fsparam_string("pagesize", Opt_pagesize),
fsparam_string("size", Opt_size),
@@ -135,6 +135,7 @@
static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
{
struct inode *inode = file_inode(file);
+ struct hugetlbfs_inode_info *info = HUGETLBFS_I(inode);
loff_t len, vma_len;
int ret;
struct hstate *h = hstate_file(file);
@@ -150,6 +151,10 @@
vma->vm_flags |= VM_HUGETLB | VM_DONTEXPAND;
vma->vm_ops = &hugetlb_vm_ops;
+ ret = seal_check_future_write(info->seals, vma);
+ if (ret)
+ return ret;
+
/*
* page based offset in vm_pgoff could be sufficiently large to
* overflow a loff_t when converted to byte offset. This can
@@ -440,7 +445,7 @@
u32 hash;
index = page->index;
- hash = hugetlb_fault_mutex_hash(h, mapping, index, 0);
+ hash = hugetlb_fault_mutex_hash(h, mapping, index);
mutex_lock(&hugetlb_fault_mutex_table[hash]);
/*
@@ -644,7 +649,7 @@
addr = index * hpage_size;
/* mutex taken here, fault path and hole punch */
- hash = hugetlb_fault_mutex_hash(h, mapping, index, addr);
+ hash = hugetlb_fault_mutex_hash(h, mapping, index);
mutex_lock(&hugetlb_fault_mutex_table[hash]);
/* See if already present in mapping to avoid alloc/free */
@@ -675,9 +680,10 @@
mutex_unlock(&hugetlb_fault_mutex_table[hash]);
+ set_page_huge_active(page);
/*
* unlock_page because locked by add_to_page_cache()
- * page_put due to reference from alloc_huge_page()
+ * put_page() due to reference from alloc_huge_page()
*/
unlock_page(page);
put_page(page);
@@ -1284,6 +1290,12 @@
sb->s_magic = HUGETLBFS_MAGIC;
sb->s_op = &hugetlbfs_ops;
sb->s_time_gran = 1;
+
+ /*
+ * Due to the special and limited functionality of hugetlbfs, it does
+ * not work well as a stacking filesystem.
+ */
+ sb->s_stack_depth = FILESYSTEM_MAX_STACK_DEPTH;
sb->s_root = d_make_root(hugetlbfs_get_root(sb, ctx));
if (!sb->s_root)
goto out_free;
@@ -1461,28 +1473,43 @@
sizeof(struct hugetlbfs_inode_info),
0, SLAB_ACCOUNT, init_once);
if (hugetlbfs_inode_cachep == NULL)
- goto out2;
+ goto out;
error = register_filesystem(&hugetlbfs_fs_type);
if (error)
- goto out;
+ goto out_free;
+ /* default hstate mount is required */
+ mnt = mount_one_hugetlbfs(&hstates[default_hstate_idx]);
+ if (IS_ERR(mnt)) {
+ error = PTR_ERR(mnt);
+ goto out_unreg;
+ }
+ hugetlbfs_vfsmount[default_hstate_idx] = mnt;
+
+ /* other hstates are optional */
i = 0;
for_each_hstate(h) {
- mnt = mount_one_hugetlbfs(h);
- if (IS_ERR(mnt) && i == 0) {
- error = PTR_ERR(mnt);
- goto out;
+ if (i == default_hstate_idx) {
+ i++;
+ continue;
}
- hugetlbfs_vfsmount[i] = mnt;
+
+ mnt = mount_one_hugetlbfs(h);
+ if (IS_ERR(mnt))
+ hugetlbfs_vfsmount[i] = NULL;
+ else
+ hugetlbfs_vfsmount[i] = mnt;
i++;
}
return 0;
- out:
+ out_unreg:
+ (void)unregister_filesystem(&hugetlbfs_fs_type);
+ out_free:
kmem_cache_destroy(hugetlbfs_inode_cachep);
- out2:
+ out:
return error;
}
fs_initcall(init_hugetlbfs_fs)