kill f_vfsmnt

very few users left...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/ocfs2/dir.c

@@ -2020,7 +2020,7 @@ int ocfs2_readdir(struct file * filp, void * dirent, filldir_t filldir)
 
 	trace_ocfs2_readdir((unsigned long long)OCFS2_I(inode)->ip_blkno);
 
-	error = ocfs2_inode_lock_atime(inode, filp->f_vfsmnt, &lock_level);
+	error = ocfs2_inode_lock_atime(inode, filp->f_path.mnt, &lock_level);
 	if (lock_level && error >= 0) {
 		/* We release EX lock which used to update atime
 		 * and get PR lock again to reduce contention

fs/ocfs2/file.c

@@ -2526,7 +2526,7 @@ static ssize_t ocfs2_file_splice_read(struct file *in,
 	/*
 	 * See the comment in ocfs2_file_aio_read()
 	 */
-	ret = ocfs2_inode_lock_atime(inode, in->f_vfsmnt, &lock_level);
+	ret = ocfs2_inode_lock_atime(inode, in->f_path.mnt, &lock_level);
 	if (ret < 0) {
 		mlog_errno(ret);
 		goto bail;
@@ -2589,7 +2589,7 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
 	 * like i_size. This allows the checks down below
 	 * generic_file_aio_read() a chance of actually working.
 	 */
-	ret = ocfs2_inode_lock_atime(inode, filp->f_vfsmnt, &lock_level);
+	ret = ocfs2_inode_lock_atime(inode, filp->f_path.mnt, &lock_level);
 	if (ret < 0) {
 		mlog_errno(ret);
 		goto bail;

fs/ocfs2/mmap.c

@@ -181,7 +181,7 @@ int ocfs2_mmap(struct file *file, struct vm_area_struct *vma)
 	int ret = 0, lock_level = 0;
 
 	ret = ocfs2_inode_lock_atime(file_inode(file),
-				    file->f_vfsmnt, &lock_level);
+				    file->f_path.mnt, &lock_level);
 	if (ret < 0) {
 		mlog_errno(ret);
 		goto out;

include/linux/fs.h

@@ -769,7 +769,6 @@ struct file {
 	} f_u;
 	struct path		f_path;
 #define f_dentry	f_path.dentry
-#define f_vfsmnt	f_path.mnt
 	const struct file_operations	*f_op;
 
 	/*

security/commoncap.c

@@ -440,7 +440,7 @@ static int get_file_caps(struct linux_binprm *bprm, bool *effective, bool *has_c
 	if (!file_caps_enabled)
 		return 0;
 
-	if (bprm->file->f_vfsmnt->mnt_flags & MNT_NOSUID)
+	if (bprm->file->f_path.mnt->mnt_flags & MNT_NOSUID)
 		return 0;
 
 	dentry = dget(bprm->file->f_dentry);