Enable the vfs_utimes() helper to handle idmapped mounts by passing down the mount's user namespace. If the initial user namespace is passed nothing changes so non-idmapped mounts will see identical behavior as before. Link: https://lore.kernel.org/r/20210112220124.837960-26-christian.brauner@xxxxxxxxxx Cc: Christoph Hellwig <hch@xxxxxx> Cc: David Howells <dhowells@xxxxxxxxxx> Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx> Cc: linux-fsdevel@xxxxxxxxxxxxxxx Reviewed-by: Christoph Hellwig <hch@xxxxxx> Signed-off-by: Christian Brauner <christian.brauner@xxxxxxxxxx> --- /* v2 */ unchanged /* v3 */ unchanged /* v4 */ - Serge Hallyn <serge@xxxxxxxxxx>: - Use "mnt_userns" to refer to a vfsmount's userns everywhere to make terminology consistent. /* v5 */ unchanged base-commit: 7c53f6b671f4aba70ff15e1b05148b10d58c2837 /* v6 */ base-commit: 19c329f6808995b142b3966301f217c831e7cf31 - Christoph Hellwig <hch@xxxxxx>: - Don't use unnecessary local variable just call mnt_user_ns() directly. --- fs/utimes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/utimes.c b/fs/utimes.c index 4572b91ddb91..39f356017635 100644 --- a/fs/utimes.c +++ b/fs/utimes.c @@ -62,7 +62,7 @@ int vfs_utimes(const struct path *path, struct timespec64 *times) } retry_deleg: inode_lock(inode); - error = notify_change(&init_user_ns, path->dentry, &newattrs, + error = notify_change(mnt_user_ns(path->mnt), path->dentry, &newattrs, &delegated_inode); inode_unlock(inode); if (delegated_inode) { -- 2.30.0
