[PATCH v6 45/51] mm: Support tail pages in wait_for_stable_page

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>

page->mapping is undefined for tail pages, so operate exclusively on
the head page.

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
 mm/page-writeback.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 28b3e7a67565..1b358aac065f 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -2851,6 +2851,7 @@ EXPORT_SYMBOL_GPL(wait_on_page_writeback);
  */
 void wait_for_stable_page(struct page *page)
 {
+	page = thp_head(page);
 	if (bdi_cap_stable_pages_required(inode_to_bdi(page->mapping->host)))
 		wait_on_page_writeback(page);
 }
-- 
2.26.2




[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]

  Powered by Linux