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>

diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 157e950..872afa4 100644 (file)
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -172,8 +172,6 @@ static inline int wb_congested(struct bdi_writeback *wb, int cong_bits)
 
 long congestion_wait(int sync, long timeout);
 long wait_iff_congested(struct pglist_data *pgdat, int sync, long timeout);
-int pdflush_proc_obsolete(struct ctl_table *table, int write,
-               void __user *buffer, size_t *lenp, loff_t *ppos);
 
 static inline bool bdi_cap_stable_pages_required(struct backing_dev_info *bdi)
 {

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index e19606b..74b52df 100644 (file)
--- 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;
-}