From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: Nicholas Piggin <npiggin@gmail.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>,
linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>, Jan Kara <jack@suse.cz>,
Mel Gorman <mgorman@techsingularity.net>,
Peter Zijlstra <peterz@infradead.org>,
Rik van Riel <riel@redhat.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Hugh Dickins <hughd@google.com>
Subject: Re: [PATCH 2/2] mm: add PageWaiters bit to indicate waitqueue should be checked
Date: Wed, 2 Nov 2016 12:04:43 +0300 [thread overview]
Message-ID: <20161102090443.xa5223fn3avimswa@black.fi.intel.com> (raw)
In-Reply-To: <20161102194024.57f2d3c7@roar.ozlabs.ibm.com>
On Wed, Nov 02, 2016 at 07:40:24PM +1100, Nicholas Piggin wrote:
> On Wed, 2 Nov 2016 11:33:51 +0300
> "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> wrote:
> > On Wed, Nov 02, 2016 at 07:12:48PM +1100, Nicholas Piggin wrote:
> > > On Wed, 2 Nov 2016 10:58:55 +0300
> > > "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> wrote:
> > >
> > > Oh my mistake, that should be something like PF_ONLY_HEAD, where
> > >
> > > #define PF_ONLY_HEAD(page, enforce) ({ \
> > > VM_BUG_ON_PGFLAGS(PageTail(page), page); \
> > > page; })
> >
> > Feel free to rename PF_NO_TAIL :)
> >
>
> I think we don't need tests on non-head pages, so it's slightly different.
Ah. Okay, fair enough.
--
Kirill A. Shutemov
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next prev parent reply other threads:[~2016-11-02 9:04 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-02 7:03 [RFC][PATCH 0/2] optimise unlock_page / end_page_writeback Nicholas Piggin
2016-11-02 7:03 ` [PATCH 1/2] mm: Use owner_priv bit for PageSwapCache, valid when PageSwapBacked Nicholas Piggin
2016-11-04 2:20 ` Hugh Dickins
2016-11-11 0:58 ` Nicholas Piggin
2016-11-02 7:03 ` [PATCH 2/2] mm: add PageWaiters bit to indicate waitqueue should be checked Nicholas Piggin
2016-11-02 7:31 ` Kirill A. Shutemov
2016-11-02 7:50 ` Nicholas Piggin
2016-11-02 7:58 ` Kirill A. Shutemov
2016-11-02 8:12 ` Nicholas Piggin
2016-11-02 8:33 ` Kirill A. Shutemov
2016-11-02 8:40 ` Nicholas Piggin
2016-11-02 9:04 ` Kirill A. Shutemov [this message]
2016-11-02 15:18 ` Linus Torvalds
2016-11-03 3:46 ` Nicholas Piggin
2016-11-03 15:49 ` Linus Torvalds
2016-11-04 2:40 ` Nicholas Piggin
2016-11-04 7:29 ` Nicholas Piggin
2016-11-04 15:59 ` Linus Torvalds
2016-11-07 3:04 ` Nicholas Piggin
2016-11-04 2:31 ` [lkp] [mm] 731b9bc419: kernel BUG at include/linux/page-flags.h:259! kernel test robot
2016-11-04 2:47 ` Nicholas Piggin
2016-12-21 15:19 [PATCH 0/2] respin of PageWaiters patch Nicholas Piggin
2016-12-21 15:19 ` [PATCH 2/2] mm: add PageWaiters bit to indicate waitqueue should be checked Nicholas Piggin
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