iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ceph: pass lock information by struct file_lock instead of as individual params.

Browse Source 
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>
This commit is contained in:
Herb Shiu 2010-11-23 13:42:23 -08:00 committed by Sage Weil
parent 25933abdd8
commit 637ae8d547
1 changed files with 21 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
fs/ceph/locks.c
View File

@ -11,40 +11,49 @@
* Implement fcntl and flock locking functions.
*/
static int ceph_lock_message(u8 lock_type, u16 operation, struct file *file,
u64 pid, u64 pid_ns,
int cmd, u64 start, u64 length, u8 wait)
int cmd, u8 wait, struct file_lock *fl)
{
struct inode *inode = file->f_dentry->d_inode;
struct ceph_mds_client *mdsc =
ceph_sb_to_client(inode->i_sb)->mdsc;
struct ceph_mds_request *req;
int err;
u64 length = 0;
req = ceph_mdsc_create_request(mdsc, operation, USE_AUTH_MDS);
if (IS_ERR(req))
return PTR_ERR(req);
req->r_inode = igrab(inode);
/* mds requires start and length rather than start and end */
if (LLONG_MAX == fl->fl_end)
length = 0;
else
length = fl->fl_end - fl->fl_start + 1;
dout("ceph_lock_message: rule: %d, op: %d, pid: %llu, start: %llu, "
"length: %llu, wait: %d, type`: %d", (int)lock_type,
(int)operation, pid, start, length, wait, cmd);
(int)operation, (u64)fl->fl_pid, fl->fl_start,
length, wait, fl->fl_type);
req->r_args.filelock_change.rule = lock_type;
req->r_args.filelock_change.type = cmd;
req->r_args.filelock_change.pid = cpu_to_le64(pid);
req->r_args.filelock_change.pid = cpu_to_le64((u64)fl->fl_pid);
/* This should be adjusted, but I'm not sure if
namespaces actually get id numbers*/
req->r_args.filelock_change.pid_namespace =
cpu_to_le64((u64)pid_ns);
req->r_args.filelock_change.start = cpu_to_le64(start);
cpu_to_le64((u64)(unsigned long)fl->fl_nspid);
req->r_args.filelock_change.start = cpu_to_le64(fl->fl_start);
req->r_args.filelock_change.length = cpu_to_le64(length);
req->r_args.filelock_change.wait = wait;
err = ceph_mdsc_do_request(mdsc, inode, req);
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,
(int)operation, pid, start, length, wait, cmd, err);
"length: %llu, wait: %d, type`: %d, err code %d", (int)lock_type,
(int)operation, (u64)fl->fl_pid, fl->fl_start,
length, wait, fl->fl_type, err);
return err;
}
@ -54,7 +63,6 @@ static int ceph_lock_message(u8 lock_type, u16 operation, struct file *file,
*/
int ceph_lock(struct file *file, int cmd, struct file_lock *fl)
{
u64 length;
u8 lock_cmd;
int err;
u8 wait = 0;
@ -76,16 +84,7 @@ int ceph_lock(struct file *file, int cmd, struct file_lock *fl)
else
lock_cmd = CEPH_LOCK_UNLOCK;
if (LLONG_MAX == fl->fl_end)
length = 0;
else
length = fl->fl_end - fl->fl_start + 1;
err = ceph_lock_message(CEPH_LOCK_FCNTL, op, file,
(u64)fl->fl_pid,
(u64)(unsigned long)fl->fl_nspid,
lock_cmd, fl->fl_start,
length, wait);
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);
@ -93,10 +92,7 @@ int ceph_lock(struct file *file, int cmd, struct file_lock *fl)
/* undo! This should only happen if the kernel detects
* local deadlock. */
ceph_lock_message(CEPH_LOCK_FCNTL, op, file,
(u64)fl->fl_pid,
(u64)(unsigned long)fl->fl_nspid,
CEPH_LOCK_UNLOCK, fl->fl_start,
length, 0);
CEPH_LOCK_UNLOCK, 0, fl);
dout("got %d on posix_lock_file, undid lock", err);
}
} else {
@ -107,7 +103,6 @@ int ceph_lock(struct file *file, int cmd, struct file_lock *fl)
int ceph_flock(struct file *file, int cmd, struct file_lock *fl)
{
u64 length;
u8 lock_cmd;
int err;
u8 wait = 1;
@ -127,26 +122,15 @@ int ceph_flock(struct file *file, int cmd, struct file_lock *fl)
lock_cmd = CEPH_LOCK_EXCL;
else
lock_cmd = CEPH_LOCK_UNLOCK;
/* mds requires start and length rather than start and end */
if (LLONG_MAX == fl->fl_end)
length = 0;
else
length = fl->fl_end - fl->fl_start + 1;
err = ceph_lock_message(CEPH_LOCK_FLOCK, CEPH_MDS_OP_SETFILELOCK,
file, (u64)fl->fl_pid,
(u64)(unsigned long)fl->fl_nspid,
lock_cmd, fl->fl_start,
length, wait);
file, lock_cmd, wait, fl);
if (!err) {
err = flock_lock_file_wait(file, fl);
if (err) {
ceph_lock_message(CEPH_LOCK_FLOCK,
CEPH_MDS_OP_SETFILELOCK,
file, (u64)fl->fl_pid,
(u64)(unsigned long)fl->fl_nspid,
CEPH_LOCK_UNLOCK, fl->fl_start,
length, 0);
file, CEPH_LOCK_UNLOCK, 0, fl);
dout("got %d on flock_lock_file_wait, undid lock", err);
}
} else {