lkml.org 
[lkml]   [2014]   [Apr]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 3/5] hugetlb: update_and_free_page(): don't clear PG_reserved bit
Date
Hugepages pages never get the PG_reserved bit set, so don't clear it. But
add a warning just in case.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
---
mm/hugetlb.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 8674eda..c295bba 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -617,8 +617,9 @@ static void update_and_free_page(struct hstate *h, struct page *page)
for (i = 0; i < pages_per_huge_page(h); i++) {
page[i].flags &= ~(1 << PG_locked | 1 << PG_error |
1 << PG_referenced | 1 << PG_dirty |
- 1 << PG_active | 1 << PG_reserved |
- 1 << PG_private | 1 << PG_writeback);
+ 1 << PG_active | 1 << PG_private |
+ 1 << PG_writeback);
+ WARN_ON(PageReserved(&page[i]));
}
VM_BUG_ON_PAGE(hugetlb_cgroup_from_page(page), page);
set_compound_page_dtor(page, NULL);
--
1.8.1.4


\
 
 \ /
  Last update: 2014-04-08 23:21    [W:0.097 / U:0.508 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site