Re: [RESEND][PATCH 2/3] dma-buf: heaps: Add a WARN_ON should the vmap_cnt go negative

On Thu, Jan 21, 2021 at 11:56 PM Sumit Semwal wrote: > > Hi John, Suren, > > > On Wed, 20 Jan 2021 at 02:15, John Stultz wrote: > > > > We shouldn't vunmap more then we vmap, but if we do, make > > sure we complain loudly. > > I was checking the general usage of vunmap in the kernel, and I > coul

Re: [RESEND][PATCH 2/3] dma-buf: heaps: Add a WARN_ON should the vmap_cnt go negative

On Fri, Jan 22, 2021 at 2:21 PM Suren Baghdasaryan wrote: > On Thu, Jan 21, 2021 at 11:56 PM Sumit Semwal wrote: > > On Wed, 20 Jan 2021 at 02:15, John Stultz wrote: > > > > > > We shouldn't vunmap more then we vmap, but if we do, make > > > sure we complain loudly. > > > > I was checking the ge

Re: [RESEND][PATCH 2/3] dma-buf: heaps: Add a WARN_ON should the vmap_cnt go negative

Hi John, Suren, On Wed, 20 Jan 2021 at 02:15, John Stultz wrote: > > We shouldn't vunmap more then we vmap, but if we do, make > sure we complain loudly. I was checking the general usage of vunmap in the kernel, and I couldn't find many instances where we need to WARN_ON for the vunmap count mo

[RESEND][PATCH 2/3] dma-buf: heaps: Add a WARN_ON should the vmap_cnt go negative

We shouldn't vunmap more then we vmap, but if we do, make sure we complain loudly. Cc: Sumit Semwal Cc: Liam Mark Cc: Laura Abbott Cc: Brian Starkey Cc: Hridya Valsaraju Cc: Suren Baghdasaryan Cc: Sandeep Patil Cc: Daniel Mentz Cc: Chris Goldsworthy Cc: Ørjan Eide Cc: Robin Murphy Cc: E