On Fri, 2006-03-31 at 21:25 +0200, Miklos Szeredi wrote:
> > NACK.
> >
> > This changes the behaviour of F_UNLCK. Currently, if the allocation
> > fails, the inode locking state remains unchanged. With your change, an
> > unlock request may end up unlocking part of the inode, but not the rest.
>
> No, look more closer. There are two cases:
>
> - some locks are partially or completely removed
>
> - the unlock splits an existing lock in two.
>
> In the first case no new locks are needed. In the second, no locks
> are modified prior to the check.
Consider something like
fcntl(SETLK, 0, 100)
fcntl(SETLK, 0, 100)
fcntl(SETLK, 0, 100)
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