Merge tag 'spdx-5.2-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...

[linux.git] / mm / page-writeback.c

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 9f61dfec6a1f6bf5d9ef15e52dd107da1b044f6c..bdbe8b6b122523e3e4a013a01ce6e02a30cd9699 100644 (file)
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * mm/page-writeback.c
  *
@@ -2808,6 +2809,18 @@ int __test_set_page_writeback(struct page *page, bool keep_write)
 }
 EXPORT_SYMBOL(__test_set_page_writeback);
 
+/*
+ * Wait for a page to complete writeback
+ */
+void wait_on_page_writeback(struct page *page)
+{
+       if (PageWriteback(page)) {
+               trace_wait_on_page_writeback(page, page_mapping(page));
+               wait_on_page_bit(page, PG_writeback);
+       }
+}
+EXPORT_SYMBOL_GPL(wait_on_page_writeback);
+
 /**
  * wait_for_stable_page() - wait for writeback to finish, if necessary.
  * @page:      The page to wait on.