The caller allocated it, the caller should free it. The only issue so
far is that we could change the flp pointer even on an error return if
the fl_change callback failed. But we can simply move the flp assignment
after the fl_change invocation, as the callers don't care about the
flp return value if the setlease call failed.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Index: linux-2.6/fs/cifs/cifsfs.c
===================================================================
--- linux-2.6.orig/fs/cifs/cifsfs.c 2010-10-31 07:10:07.636004223 -0400
+++ linux-2.6/fs/cifs/cifsfs.c 2010-10-31 07:10:10.922004154 -0400
@@ -625,11 +625,8 @@ static int cifs_setlease(struct file *fi
knows that the file won't be changed on the server
by anyone else */
return generic_setlease(file, arg, lease);
- else {
- if (arg != F_UNLCK)
- locks_free_lock(*lease);
+ else
return -EAGAIN;
- }
}
struct file_system_type cifs_fs_type = {
Index: linux-2.6/fs/gfs2/file.c
===================================================================
--- linux-2.6.orig/fs/gfs2/file.c 2010-10-31 07:10:07.643004363 -0400
+++ linux-2.6/fs/gfs2/file.c 2010-10-31 07:10:10.923003665 -0400
@@ -629,8 +629,6 @@ static ssize_t gfs2_file_aio_write(struc
static int gfs2_setlease(struct file *file, long arg, struct file_lock **fl)
{
- if (arg != F_UNLCK)
- locks_free_lock(*fl);
return -EINVAL;
}
Index: linux-2.6/fs/locks.c
===================================================================
--- linux-2.6.orig/fs/locks.c 2010-10-31 07:10:07.649004084 -0400
+++ linux-2.6/fs/locks.c 2010-10-31 07:34:10.102255587 -0400
@@ -1428,8 +1425,9 @@ int generic_setlease(struct file *filp,
goto out;
if (my_before != NULL) {
- *flp = *my_before;
error = lease->fl_lmops->fl_change(my_before, arg);
+ if (!error)
+ *flp = *my_before;
goto out;
}
@@ -1444,8 +1442,6 @@ int generic_setlease(struct file *filp,
return 0;
out:
- if (arg != F_UNLCK)
- locks_free_lock(lease);
return error;
}
EXPORT_SYMBOL(generic_setlease);
@@ -1524,8 +1520,11 @@ static int do_fcntl_add_lease(unsigned i
}
lock_flocks();
error = __vfs_setlease(filp, arg, &fl);
- if (error)
- goto out_unlock;
+ if (error) {
+ unlock_flocks();
+ locks_free_lock(fl);
+ goto out_free_fasync;
+ }
/*
* fasync_insert_entry() returns the old entry if any.
@@ -1541,12 +1540,12 @@ static int do_fcntl_add_lease(unsigned i
fl->fl_type = F_UNLCK | F_INPROGRESS;
fl->fl_break_time = jiffies - 10;
time_out_leases(inode);
- goto out_unlock;
+ } else {
+ error = __f_setown(filp, task_pid(current), PIDTYPE_PID, 0);
}
-
- error = __f_setown(filp, task_pid(current), PIDTYPE_PID, 0);
-out_unlock:
unlock_flocks();
+
+out_free_fasync:
if (new)
fasync_free(new);
return error;
Index: linux-2.6/fs/nfs/file.c
===================================================================
--- linux-2.6.orig/fs/nfs/file.c 2010-10-31 07:10:07.658003804 -0400
+++ linux-2.6/fs/nfs/file.c 2010-10-31 07:10:10.936003734 -0400
@@ -884,7 +884,5 @@ static int nfs_setlease(struct file *fil
dprintk("NFS: setlease(%s/%s, arg=%ld)\n",
file->f_path.dentry->d_parent->d_name.name,
file->f_path.dentry->d_name.name, arg);
- if (arg != F_UNLCK)
- locks_free_lock(*fl);
return -EINVAL;
}
Index: linux-2.6/fs/nfsd/nfs4state.c
===================================================================
--- linux-2.6.orig/fs/nfsd/nfs4state.c 2010-10-31 07:10:07.666004084 -0400
+++ linux-2.6/fs/nfsd/nfs4state.c 2010-10-31 07:32:56.906254608 -0400
@@ -2652,6 +2652,7 @@ nfs4_open_delegation(struct svc_fh *fh,
if ((status = vfs_setlease(fl->fl_file, fl->fl_type, &fl))) {
dprintk("NFSD: setlease failed [%d], no delegation\n", status);
dp->dl_flock = NULL;
+ locks_free_lock(fl);
unhash_delegation(dp);
flag = NFS4_OPEN_DELEGATE_NONE;
goto out;
--
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