backing-dev: kill unused pdflush_proc_obsolete()

After commit b35bd0d9f8a8, pdflush_proc_obsolete() is no longer
used. Kill the function and declaration.

Reported-by: Rakesh Pandit <rakesh@tuxera.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 0 insertions, 20 deletions

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index e19606bb41a0..74b52dfd5852 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -1072,23 +1072,3 @@ out:
 	return ret;
 }
 EXPORT_SYMBOL(wait_iff_congested);
-
-int pdflush_proc_obsolete(struct ctl_table *table, int write,
-			void __user *buffer, size_t *lenp, loff_t *ppos)
-{
-	char kbuf[] = "0\n";
-
-	if (*ppos || *lenp < sizeof(kbuf)) {
-		*lenp = 0;
-		return 0;
-	}
-
-	if (copy_to_user(buffer, kbuf, sizeof(kbuf)))
-		return -EFAULT;
-	pr_warn_once("%s exported in /proc is scheduled for removal\n",
-		     table->procname);
-
-	*lenp = 2;
-	*ppos += *lenp;
-	return 2;
-}