From: William Kucharski <william.kucharski@oracle.com>
To: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
Mel Gorman <mgorman@techsingularity.net>
Subject: Re: [PATCH 0/3] Wait for I/O without holding a page reference
Date: Tue, 13 Oct 2020 07:32:23 -0600 [thread overview]
Message-ID: <5EEF6D22-639C-492E-BF81-C6239D68ABFD@oracle.com> (raw)
In-Reply-To: <20201013030008.27219-1-willy@infradead.org>
> On Oct 12, 2020, at 9:00 PM, Matthew Wilcox (Oracle) <willy@infradead.org> wrote:
>
> The upcoming THP patchset keeps THPs Uptodate at all times unless we
> hit an I/O error. So I have a patch which induces I/O errors in 10%
> of readahead I/Os in order to test the fallback path. It hits a
> problem with xfstests generic/273 which has 500 threads livelocking
> trying to split the THP. This patchset fixes that livelock and
> takes 21 lines out of generic_file_buffered_read().
>
> Matthew Wilcox (Oracle) (3):
> mm: Pass a sleep state to put_and_wait_on_page_locked
> mm/filemap: Don't hold a page reference while waiting for unlock
> mm: Inline __wait_on_page_locked_async into caller
>
> include/linux/pagemap.h | 3 +-
> mm/filemap.c | 129 +++++++++++++++-------------------------
> mm/huge_memory.c | 4 +-
> mm/migrate.c | 4 +-
> 4 files changed, 52 insertions(+), 88 deletions(-)
>
> --
> 2.28.0
For the series:
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
prev parent reply other threads:[~2020-10-13 13:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-13 3:00 [PATCH 0/3] Wait for I/O without holding a page reference Matthew Wilcox (Oracle)
2020-10-13 3:00 ` [PATCH 1/3] mm: Pass a sleep state to put_and_wait_on_page_locked Matthew Wilcox (Oracle)
2020-10-13 3:00 ` [PATCH 2/3] mm: Don't hold a page reference while waiting for unlock Matthew Wilcox (Oracle)
2020-10-13 13:32 ` Matthew Wilcox
2020-10-13 3:00 ` [PATCH 2/3] mm/filemap: " Matthew Wilcox (Oracle)
2020-10-13 3:00 ` [PATCH 3/3] mm: Inline __wait_on_page_locked_async into caller Matthew Wilcox (Oracle)
2020-10-13 13:32 ` William Kucharski [this message]
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