linux-kernel - [PATCH v5 0/2] fix and improvement for file THP

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Message-ID: <20191106060930.2571389-1-songliubraving@fb.com>
Date:   Tue, 5 Nov 2019 22:09:28 -0800
From:   Song Liu <songliubraving@...com>
To:     <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
        <akpm@...ux-foundation.org>
CC:     <matthew.wilcox@...cle.com>, <kernel-team@...com>,
        <william.kucharski@...cle.com>, <kirill.shutemov@...ux.intel.com>,
        Song Liu <songliubraving@...com>
Subject: [PATCH v5 0/2] fix and improvement for file THP

This set includes a fix and an improvement for file THP.

1/2 fixes pagecache corruption for file THP, where !PageUptodate page gets
collapsed into huge page. 1/2 is needed for 5.4.

2/2 improve collapse of file THP by flushing dirty page in collapse_file().
2/2 can wait until 5.5.

Thanks,
Song

Song Liu (2):
  mm,thp: recheck each page before collapsing file THP
  mm/thp: flush file for !is_shmem PageDirty() case in collapse_file()

 mm/khugepaged.c | 42 ++++++++++++++++++++++++++++++++----------
 1 file changed, 32 insertions(+), 10 deletions(-)

--
2.17.1