From: "Yan, Zheng" <zyan@redhat.com>
To: ceph-devel@vger.kernel.org, jlayton@redhat.com, idryomov@gmail.com
Cc: "Yan, Zheng" <zyan@redhat.com>
Subject: [PATCH 12/13] ceph: fix capsnap dirty pages accounting
Date: Mon, 4 Sep 2017 17:39:07 +0800 [thread overview]
Message-ID: <20170904093908.57316-13-zyan@redhat.com> (raw)
In-Reply-To: <20170904093908.57316-1-zyan@redhat.com>
writepages_finish() calls ceph_put_wrbuffer_cap_refs() once for
all pages, parameter snapc is set to req->r_snapc. So writepages()
shouldn't write dirty pages associated with different snapc in
one OSD request.
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
---
fs/ceph/addr.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 201e529e8a6c..1ffdb903eb79 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -930,8 +930,8 @@ static int ceph_writepages_start(struct address_space *mapping,
/* only if matching snap context */
pgsnapc = page_snap_context(page);
- if (pgsnapc->seq > snapc->seq) {
- dout("page snapc %p %lld > oldest %p %lld\n",
+ if (pgsnapc != snapc) {
+ dout("page snapc %p %lld != oldest %p %lld\n",
pgsnapc, pgsnapc->seq, snapc, snapc->seq);
unlock_page(page);
continue;
--
2.13.5
next prev parent reply other threads:[~2017-09-04 9:40 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-04 9:38 [PATCH 00/13] ceph: snapshot and multimds fixes Yan, Zheng
2017-09-04 9:38 ` [PATCH 01/13] ceph: fix null pointer dereference in ceph_flush_snaps() Yan, Zheng
2017-09-04 9:38 ` [PATCH 02/13] ceph: fix message order check in handle_cap_export() Yan, Zheng
2017-09-04 9:38 ` [PATCH 03/13] ceph: handle race between vmtruncate and queuing cap snap Yan, Zheng
2017-09-04 9:38 ` [PATCH 04/13] ceph: queue cap snap only when snap realm's context changes Yan, Zheng
2017-09-04 9:39 ` [PATCH 05/13] ceph: remove stale check in ceph_invalidatepage() Yan, Zheng
2017-09-04 9:39 ` [PATCH 06/13] ceph: properly get capsnap's size in get_oldest_context() Yan, Zheng
2017-09-04 9:39 ` [PATCH 07/13] ceph: make writepage_nounlock() invalidate page that beyonds EOF Yan, Zheng
2017-09-04 9:39 ` [PATCH 08/13] ceph: optimize pagevec iterating in ceph_writepages_start() Yan, Zheng
2017-09-04 9:39 ` [PATCH 09/13] ceph: cleanup local varibles " Yan, Zheng
2017-09-04 9:39 ` [PATCH 10/13] ceph: fix "range cyclic" mode writepages Yan, Zheng
2017-09-04 9:39 ` [PATCH 11/13] ceph: ignore wbc->range_{start,end} when write back snapshot data Yan, Zheng
2017-09-04 9:39 ` Yan, Zheng [this message]
2017-09-04 9:39 ` [PATCH 13/13] ceph: wait on writeback after writing " Yan, Zheng
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