#include <linux/ima.h>
#include <linux/dnotify.h>
#include <linux/compat.h>
+#include <linux/mnt_idmapping.h>
#include "internal.h"
inode_unlock(dentry->d_inode);
return ret;
}
+EXPORT_SYMBOL_GPL(do_truncate);
long vfs_truncate(const struct path *path, loff_t length)
{
int chown_common(const struct path *path, uid_t user, gid_t group)
{
- struct user_namespace *mnt_userns;
+ struct user_namespace *mnt_userns, *fs_userns;
struct inode *inode = path->dentry->d_inode;
struct inode *delegated_inode = NULL;
int error;
gid = make_kgid(current_user_ns(), group);
mnt_userns = mnt_user_ns(path->mnt);
- uid = kuid_from_mnt(mnt_userns, uid);
- gid = kgid_from_mnt(mnt_userns, gid);
+ fs_userns = i_user_ns(inode);
+ uid = mapped_kuid_user(mnt_userns, fs_userns, uid);
+ gid = mapped_kgid_user(mnt_userns, fs_userns, gid);
retry_deleg:
newattrs.ia_valid = ATTR_CTIME;
* of THPs into the page cache will fail.
*/
smp_mb();
- if (filemap_nr_thps(inode->i_mapping))
- truncate_pagecache(inode, 0);
+ if (filemap_nr_thps(inode->i_mapping)) {
+ struct address_space *mapping = inode->i_mapping;
+
+ filemap_invalidate_lock(inode->i_mapping);
+ /*
+ * unmap_mapping_range just need to be called once
+ * here, because the private pages is not need to be
+ * unmapped mapping (e.g. data segment of dynamic
+ * shared libraries here).
+ */
+ unmap_mapping_range(mapping, 0, 0, 0);
+ truncate_inode_pages(mapping, 0);
+ filemap_invalidate_unlock(inode->i_mapping);
+ }
}
return 0;