On Wed, Jan 03, 2018 at 01:02:38AM -0600, Pete Zaitcev wrote:
> On Fri, 29 Dec 2017 16:24:20 +0300
> "Kirill A. Shutemov" <kir...@shutemov.name> wrote:
>
> > Looks like MON_IOCT_RING_SIZE reallocates ring buffer without any
> > serialization wrt mon_bin
On Thu, Dec 28, 2017 at 04:03:46PM -0800, Andrew Morton wrote:
>
> Is anyone able to reproduce this? The VM_BUG_ON_PAGE() in get_page()
> went bang.
Yep, it triggers for me.
Looks like MON_IOCT_RING_SIZE reallocates ring buffer without any
serialization wrt mon_bin_vma_fault(). By the time of
On Tue, Dec 26, 2017 at 07:13:26PM -0800, Matthew Wilcox wrote:
> On Tue, Dec 26, 2017 at 08:21:53PM +0300, Kirill A. Shutemov wrote:
> > > +/**
> > > + * xa_is_internal() - Is the entry an internal entry?
> > > + * @entry: Entry retrieved from the XArray
>
On Tue, Dec 26, 2017 at 07:05:34PM -0800, Matthew Wilcox wrote:
> On Tue, Dec 26, 2017 at 08:15:42PM +0300, Kirill A. Shutemov wrote:
> > > 28 files changed, 249 insertions(+), 240 deletions(-)
> >
> > Everything looks fine to me after quick scan, but hat's a lot of c
NULL);
> spin_unlock_irqrestore(>pages.xa_lock, flags);
>
> More details here: https://9p.io/sys/doc/compiler.html
Yeah, that's neat.
Dealing with old compilers is frustrating...
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Kirill A. Shutemov
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On Tue, Dec 26, 2017 at 07:43:40PM -0800, Matthew Wilcox wrote:
> On Tue, Dec 26, 2017 at 07:54:40PM +0300, Kirill A. Shutemov wrote:
> > On Fri, Dec 15, 2017 at 02:03:35PM -0800, Matthew Wilcox wrote:
> > > From: Matthew Wilcox <mawil...@microsoft.com>
> > >
entry"? Is it just a term for non-value and
non-data pointer entry? Do we allow anybody besides xarray implementation to
use internal entires?
Do we have it documented?
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Kirill A. Shutemov
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if (index > end)
> break;
>
> - if (radix_tree_exceptional_entry(page)) {
> + if (xa_is_value(page)) {
> if (!invalidate_exceptional_entry2(mapping,
>
gt; since we don't really care that it's a tree. Take the opportunity to
> rearrange the elements of address_space to pack them better on 64-bit,
> and make the comments more useful.
The description sounds a lot like three commits ;)
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subject and commit message. At first
I was confused why do you need to touch idr here. It took few minutes to figure
it out.
Could you please add more into commit message about lockname and xa_ locking
interface since you introduce it here?
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closed from
kernel POV until vma is gone and you cannot unload relevant module.
See get_file() in mmap_region().
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