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;
-}