diff options
| author | Herb Shiu <herb_shiu@tcloudcomputing.com> | 2010-11-23 13:58:29 -0800 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2010-12-01 14:22:34 -0800 |
| commit | a5b10629edfa521071ccdb3b1e0e7fb350a044db (patch) | |
| tree | c852f7a214c30fe1923579ec031b37fc8f326523 | |
| parent | 637ae8d547390df75bad42a7e9cb65e625119767 (diff) | |
ceph: Behave better when handling file lock replies.
Fill in the local lock with response data if appropriate,
and don't call posix_lock_file when reading locks.
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>
| -rw-r--r-- | fs/ceph/locks.c | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c index 7b7ac310f05..476b329867d 100644 --- a/fs/ceph/locks.c +++ b/fs/ceph/locks.c @@ -49,6 +49,25 @@ static int ceph_lock_message(u8 lock_type, u16 operation, struct file *file, req->r_args.filelock_change.wait = wait; err = ceph_mdsc_do_request(mdsc, inode, req); + + if ( operation == CEPH_MDS_OP_GETFILELOCK){ + fl->fl_pid = le64_to_cpu(req->r_reply_info.filelock_reply->pid); + if (CEPH_LOCK_SHARED == req->r_reply_info.filelock_reply->type) + fl->fl_type = F_RDLCK; + else if (CEPH_LOCK_EXCL == req->r_reply_info.filelock_reply->type) + fl->fl_type = F_WRLCK; + else + fl->fl_type = F_UNLCK; + + fl->fl_start = le64_to_cpu(req->r_reply_info.filelock_reply->start); + length = le64_to_cpu(req->r_reply_info.filelock_reply->start) + + le64_to_cpu(req->r_reply_info.filelock_reply->length); + if (length >= 1) + fl->fl_end = length -1; + else + fl->fl_end = 0; + + } ceph_mdsc_put_request(req); dout("ceph_lock_message: rule: %d, op: %d, pid: %llu, start: %llu, " "length: %llu, wait: %d, type`: %d, err code %d", (int)lock_type, @@ -86,15 +105,18 @@ int ceph_lock(struct file *file, int cmd, struct file_lock *fl) err = ceph_lock_message(CEPH_LOCK_FCNTL, op, file, lock_cmd, wait, fl); if (!err) { - dout("mds locked, locking locally"); - err = posix_lock_file(file, fl, NULL); - if (err && (CEPH_MDS_OP_SETFILELOCK == op)) { - /* undo! This should only happen if the kernel detects - * local deadlock. */ - ceph_lock_message(CEPH_LOCK_FCNTL, op, file, - CEPH_LOCK_UNLOCK, 0, fl); - dout("got %d on posix_lock_file, undid lock", err); + if ( op != CEPH_MDS_OP_GETFILELOCK ){ + dout("mds locked, locking locally"); + err = posix_lock_file(file, fl, NULL); + if (err && (CEPH_MDS_OP_SETFILELOCK == op)) { + /* undo! This should only happen if the kernel detects + * local deadlock. */ + ceph_lock_message(CEPH_LOCK_FCNTL, op, file, + CEPH_LOCK_UNLOCK, 0, fl); + dout("got %d on posix_lock_file, undid lock", err); + } } + } else { dout("mds returned error code %d", err); } |