RE: [PATCH 08/29] drivers, md: convert mddev.active from atomic_t to refcount_t

2017-03-16 Thread Reshetova, Elena
> On Tue, 2017-03-14 at 12:29 +, Reshetova, Elena wrote: > > > Elena Reshetova writes: > > > > > > > refcount_t type and corresponding API should be > > > > used instead of atomic_t when the variable is used as > > > > a reference counter. This allows to avoid accidental > > > > refcounter ove

Re: [PATCH 08/29] drivers, md: convert mddev.active from atomic_t to refcount_t

2017-03-14 Thread James Bottomley
On Tue, 2017-03-14 at 12:29 +, Reshetova, Elena wrote: > > Elena Reshetova writes: > > > > > refcount_t type and corresponding API should be > > > used instead of atomic_t when the variable is used as > > > a reference counter. This allows to avoid accidental > > > refcounter overflows that m

RE: [PATCH 08/29] drivers, md: convert mddev.active from atomic_t to refcount_t

2017-03-14 Thread Reshetova, Elena
> Elena Reshetova writes: > > > refcount_t type and corresponding API should be > > used instead of atomic_t when the variable is used as > > a reference counter. This allows to avoid accidental > > refcounter overflows that might lead to use-after-free > > situations. > > > > Signed-off-by: Elen

Re: [PATCH 08/29] drivers, md: convert mddev.active from atomic_t to refcount_t

2017-03-14 Thread Michael Ellerman
Elena Reshetova writes: > refcount_t type and corresponding API should be > used instead of atomic_t when the variable is used as > a reference counter. This allows to avoid accidental > refcounter overflows that might lead to use-after-free > situations. > > Signed-off-by: Elena Reshetova > Sig