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ceph: fix capsnap dirty pages accounting

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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>
This commit is contained in:
Yan, Zheng 2017-09-03 10:09:11 +08:00 • committed by Ilya Dryomov
parent 2a2d927e35
commit 7e1ee54a07
1 changed files with 2 additions and 2 deletions
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4
fs/ceph/addr.c
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@ -930,8 +930,8 @@ get_more_pages:
/* only if matching snap context */ /* only if matching snap context */
pgsnapc = page_snap_context(page); pgsnapc = page_snap_context(page);
if (pgsnapc->seq > snapc->seq) { if (pgsnapc != snapc) {
dout("page snapc %p %lld > oldest %p %lld\n", dout("page snapc %p %lld != oldest %p %lld\n",
pgsnapc, pgsnapc->seq, snapc, snapc->seq); pgsnapc, pgsnapc->seq, snapc, snapc->seq);
unlock_page(page); unlock_page(page);
continue; continue;