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locks: plumb a "priv" pointer into the setlease routines

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In later patches, we're going to add a new lock_manager_operation to
finish setting up the lease while still holding the i_lock.  To do
this, we'll need to pass a little bit of info in the fcntl setlease
case (primarily an fasync structure). Plumb the extra pointer into
there in advance of that.

We declare this pointer as a void ** to make it clear that this is
private info, and that the caller isn't required to set this unless
the lm_setup specifically requires it.

Signed-off-by: Jeff Layton <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
This commit is contained in:
Jeff Layton 2014-08-22 10:40:25 -04:00
commit e6f5c78930
7 changed files with 37 additions and 26 deletions
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4
fs/libfs.c
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@ -1081,12 +1081,14 @@ EXPORT_SYMBOL(alloc_anon_inode);
* @filp: file pointer
* @arg: type of lease to obtain
* @flp: new lease supplied for insertion
* @priv: private data for lm_setup operation
*
* Generic helper for filesystems that do not wish to allow leases to be set.
* All arguments are ignored and it just returns -EINVAL.
*/
int
simple_nosetlease(struct file *filp, long arg, struct file_lock **flp)
simple_nosetlease(struct file *filp, long arg, struct file_lock **flp,
void **priv)
{
return -EINVAL;
}