diff options
| author | Herb Shiu <herb_shiu@tcloudcomputing.com> | 2010-12-02 01:14:38 +0300 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2010-12-02 01:22:27 +0300 |
| commit | 25933abdd8c562182ca6dc9f8c4c2cc8265c3a80 (patch) | |
| tree | 213db691c7a2d115f2f9ec5d586c1b769dfdb6fc /fs/ceph/mds_client.c | |
| parent | 884ea892763d4dfba509743f65961c782c0442db (diff) | |
| download | linux-25933abdd8c562182ca6dc9f8c4c2cc8265c3a80.tar.xz | |
ceph: Handle file locks in replies from the MDS.
Previously the kernel client incorrectly assumed everything was a directory.
Signed-off-by: Herb Shiu <herb_shiu@tcloudcomputing.com>
Acked-by: Greg Farnum <gregf@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/mds_client.c')
| -rw-r--r-- | fs/ceph/mds_client.c | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 098b18508479..38800eaa81d0 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -202,6 +202,38 @@ out_bad: } /* + * parse fcntl F_GETLK results + */ +static int parse_reply_info_filelock(void **p, void *end, + struct ceph_mds_reply_info_parsed *info) +{ + if (*p + sizeof(*info->filelock_reply) > end) + goto bad; + + info->filelock_reply = *p; + *p += sizeof(*info->filelock_reply); + + if (unlikely(*p != end)) + goto bad; + return 0; + +bad: + return -EIO; +} + +/* + * parse extra results + */ +static int parse_reply_info_extra(void **p, void *end, + struct ceph_mds_reply_info_parsed *info) +{ + if (info->head->op == CEPH_MDS_OP_GETFILELOCK) + return parse_reply_info_filelock(p, end, info); + else + return parse_reply_info_dir(p, end, info); +} + +/* * parse entire mds reply */ static int parse_reply_info(struct ceph_msg *msg, @@ -223,10 +255,10 @@ static int parse_reply_info(struct ceph_msg *msg, goto out_bad; } - /* dir content */ + /* extra */ ceph_decode_32_safe(&p, end, len, bad); if (len > 0) { - err = parse_reply_info_dir(&p, p+len, info); + err = parse_reply_info_extra(&p, p+len, info); if (err < 0) goto out_bad; } @@ -2074,7 +2106,7 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg) mutex_lock(&session->s_mutex); if (err < 0) { - pr_err("mdsc_handle_reply got corrupt reply mds%d\n", mds); + pr_err("mdsc_handle_reply got corrupt reply mds%d(tid:%lld)\n", mds, tid); ceph_msg_dump(msg); goto out_err; } @@ -2094,7 +2126,8 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg) mutex_lock(&req->r_fill_mutex); err = ceph_fill_trace(mdsc->fsc->sb, req, req->r_session); if (err == 0) { - if (result == 0 && rinfo->dir_nr) + if (result == 0 && req->r_op != CEPH_MDS_OP_GETFILELOCK && + rinfo->dir_nr) ceph_readdir_prepopulate(req, req->r_session); ceph_unreserve_caps(mdsc, &req->r_caps_reservation); } |