[tree-wide] finally take no_llseek out

no_llseek had been defined to NULL two years ago, in commit 868941b
("fs: remove no_llseek")

To quote that commit,

  At -rc1 we'll need do a mechanical removal of no_llseek -

  git grep -l -w no_llseek | grep -v porting.rst | while read i; do
    sed -i '/\<no_llseek\>/d' $i
  done

  would do it.

Unfortunately, that hadn't been done.  Linus, could you do that now, so
that we could finally put that thing to rest? All instances are of the
form
    .llseek = no_llseek,
so it's obviously safe.

net/mac80211/rc80211_minstrel_ht_debugfs.c

@@ -187,7 +187,6 @@ static const struct file_operations minstrel_ht_stat_fops = {
 	.open = minstrel_ht_stats_open,
 	.read = minstrel_stats_read,
 	.release = minstrel_stats_release,
-	.llseek = no_llseek,
 };
 
 static char *
@@ -323,7 +322,6 @@ static const struct file_operations minstrel_ht_stat_csv_fops = {
 	.open = minstrel_ht_stats_csv_open,
 	.read = minstrel_stats_read,
 	.release = minstrel_stats_release,
-	.llseek = no_llseek,
 };
 
 void

net/rfkill/core.c

@@ -1379,7 +1379,6 @@ static const struct file_operations rfkill_fops = {
 	.release	= rfkill_fop_release,
 	.unlocked_ioctl	= rfkill_fop_ioctl,
 	.compat_ioctl	= compat_ptr_ioctl,
-	.llseek		= no_llseek,
 };
 
 #define RFKILL_NAME "rfkill"

net/socket.c

@@ -151,7 +151,6 @@ static void sock_show_fdinfo(struct seq_file *m, struct file *f)
 
 static const struct file_operations socket_file_ops = {
 	.owner =	THIS_MODULE,
-	.llseek =	no_llseek,
 	.read_iter =	sock_read_iter,
 	.write_iter =	sock_write_iter,
 	.poll =		sock_poll,

net/sunrpc/cache.c

@@ -1596,7 +1596,6 @@ static int cache_release_procfs(struct inode *inode, struct file *filp)
 }
 
 static const struct proc_ops cache_channel_proc_ops = {
-	.proc_lseek	= no_llseek,
 	.proc_read	= cache_read_procfs,
 	.proc_write	= cache_write_procfs,
 	.proc_poll	= cache_poll_procfs,
@@ -1662,7 +1661,6 @@ static const struct proc_ops cache_flush_proc_ops = {
 	.proc_read	= read_flush_procfs,
 	.proc_write	= write_flush_procfs,
 	.proc_release	= release_flush_procfs,
-	.proc_lseek	= no_llseek,
 };
 
 static void remove_cache_proc_entries(struct cache_detail *cd)
@@ -1815,7 +1813,6 @@ static int cache_release_pipefs(struct inode *inode, struct file *filp)
 
 const struct file_operations cache_file_operations_pipefs = {
 	.owner		= THIS_MODULE,
-	.llseek		= no_llseek,
 	.read		= cache_read_pipefs,
 	.write		= cache_write_pipefs,
 	.poll		= cache_poll_pipefs,
@@ -1881,7 +1878,6 @@ const struct file_operations cache_flush_operations_pipefs = {
 	.read		= read_flush_pipefs,
 	.write		= write_flush_pipefs,
 	.release	= release_flush_pipefs,
-	.llseek		= no_llseek,
 };
 
 int sunrpc_cache_register_pipefs(struct dentry *parent,

net/sunrpc/rpc_pipe.c

@@ -385,7 +385,6 @@ rpc_pipe_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 
 static const struct file_operations rpc_pipe_fops = {
 	.owner		= THIS_MODULE,
-	.llseek		= no_llseek,
 	.read		= rpc_pipe_read,
 	.write		= rpc_pipe_write,
 	.poll		= rpc_pipe_poll,