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author | Yehuda Sadeh <yehuda@hq.newdream.net> | 2010-02-19 00:07:01 +0000 |
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committer | Sage Weil <sage@newdream.net> | 2010-02-19 14:34:18 -0800 |
commit | e63dc5c780ba32d6d8b3662eecce2b8d96489b41 (patch) | |
tree | ed6ee7f557c479934b6d8a70b7ccba86b13ae670 /fs/ceph/addr.c | |
parent | 5ecad6fd7bfd30b3eaea51345f546b81de7a6473 (diff) | |
download | linux-e63dc5c780ba32d6d8b3662eecce2b8d96489b41.tar.bz2 |
ceph: remove page upon writeback completion if lost cache cap
This page should have been removed earlier when the cache cap was
revoked, but a writeback was in flight, so it was skipped. We truncate
it here just as the writeback finishes, while it's still locked.
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/addr.c')
-rw-r--r-- | fs/ceph/addr.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 71f5ad1c1e26..25360d517d1b 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -514,6 +514,7 @@ static void writepages_finish(struct ceph_osd_request *req, u64 bytes = 0; struct ceph_client *client = ceph_inode_to_client(inode); long writeback_stat; + unsigned issued = __ceph_caps_issued(ci, NULL); /* parse reply */ replyhead = msg->front.iov_base; @@ -559,6 +560,16 @@ static void writepages_finish(struct ceph_osd_request *req, ceph_put_snap_context(snapc); dout("unlocking %d %p\n", i, page); end_page_writeback(page); + + /* + * We lost the cache cap, need to truncate the page before + * it is unlocked, otherwise we'd truncate it later in the + * page truncation thread, possibly losing some data that + * raced its way in + */ + if ((issued & CEPH_CAP_FILE_CACHE) == 0) + generic_error_remove_page(inode->i_mapping, page); + unlock_page(page); } dout("%p wrote+cleaned %d pages\n", inode, wrote); |