writeback: rename domain_update_bandwidth()

Rename domain_update_bandwidth() to domain_update_dirty_limit().  The
original name is a misnomer.  The function has nothing to do with a
bandwidth, it updates dirty limits.

Link: https://lkml.kernel.org/r/20210713104716.22868-4-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: Michael Stapelberg <stapelberg+linux@google.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 156f5888c09da5e4547003a69e8ab3c4f85992c3..7d8ad4260147a2a9518b6a76b61c9f14c64ef248 100644 (file)
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1147,8 +1147,8 @@ update:
        dom->dirty_limit = limit;
 }
 
-static void domain_update_bandwidth(struct dirty_throttle_control *dtc,
-                                   unsigned long now)
+static void domain_update_dirty_limit(struct dirty_throttle_control *dtc,
+                                     unsigned long now)
 {
        struct wb_domain *dom = dtc_dom(dtc);
 
@@ -1353,7 +1353,7 @@ static void __wb_update_bandwidth(struct dirty_throttle_control *gdtc,
        written = percpu_counter_read(&wb->stat[WB_WRITTEN]);
 
        if (update_ratelimit) {
-               domain_update_bandwidth(gdtc, now);
+               domain_update_dirty_limit(gdtc, now);
                wb_update_dirty_ratelimit(gdtc, dirtied, elapsed);
 
                /*
@@ -1361,7 +1361,7 @@ static void __wb_update_bandwidth(struct dirty_throttle_control *gdtc,
                 * compiler has no way to figure that out.  Help it.
                 */
                if (IS_ENABLED(CONFIG_CGROUP_WRITEBACK) && mdtc) {
-                       domain_update_bandwidth(mdtc, now);
+                       domain_update_dirty_limit(mdtc, now);
                        wb_update_dirty_ratelimit(mdtc, dirtied, elapsed);
                }
        }