Commit 7e1ee54a authored Sep 03, 2017 by Yan, Zheng Committed by Ilya Dryomov Sep 06, 2017

ceph: fix capsnap dirty pages accounting



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>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

parent 2a2d927e

fs/ceph/addr.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -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;