writeback: fix inode cgroup switching comment

Commit 682aa8e1a6a1 ("writeback: implement unlocked_inode_to_wb
transaction and use it for stat updates") refers to
inode_switch_wb_work_fn() which never got merged.

Switch the comments to inode_switch_wbs_work_fn().

Link: http://lkml.kernel.org/r/20190305004617.142590-1-gthelen@google.com
Fixes: 682aa8e1a6a1 ("writeback: implement unlocked_inode_to_wb transaction and use it for stat updates")
Signed-off-by: Greg Thelen <gthelen@google.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index c28a47c..f9b0291 100644 (file)
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -365,7 +365,7 @@ unlocked_inode_to_wb_begin(struct inode *inode, struct wb_lock_cookie *cookie)
        rcu_read_lock();
 
        /*
-        * Paired with store_release in inode_switch_wb_work_fn() and
+        * Paired with store_release in inode_switch_wbs_work_fn() and
         * ensures that we see the new wb if we see cleared I_WB_SWITCH.
         */
        cookie->locked = smp_load_acquire(&inode->i_state) & I_WB_SWITCH;

diff --git a/include/linux/fs.h b/include/linux/fs.h
index fd423fe..08f2604 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2091,7 +2091,7 @@ static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp)
  * I_WB_SWITCH         Cgroup bdi_writeback switching in progress.  Used to
  *                     synchronize competing switching instances and to tell
  *                     wb stat updates to grab the i_pages lock.  See
- *                     inode_switch_wb_work_fn() for details.
+ *                     inode_switch_wbs_work_fn() for details.
  *
  * I_OVL_INUSE         Used by overlayfs to get exclusive ownership on upper
  *                     and work dirs among overlayfs mounts.