From 51ee4b84f5c86935b438d6636f34b523edb415a8 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 31 Oct 2010 08:35:10 -0400 Subject: locks: let the caller free file_lock on ->setlease failure 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 Signed-off-by: Linus Torvalds --- fs/locks.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) (limited to 'fs/locks.c') diff --git a/fs/locks.c b/fs/locks.c index 5b526a977882..a2ab790471b5 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -1428,8 +1428,9 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp) 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 +1445,6 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp) return 0; out: - if (arg != F_UNLCK) - locks_free_lock(lease); return error; } EXPORT_SYMBOL(generic_setlease); @@ -1524,8 +1523,11 @@ static int do_fcntl_add_lease(unsigned int fd, struct file *filp, long arg) } 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 +1543,12 @@ static int do_fcntl_add_lease(unsigned int fd, struct file *filp, long arg) 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; -- cgit v1.2.3