| From: |
| Hsin-Yi Wang <hsinyi-AT-chromium.org> |
| To: |
| Phillip Lougher <phillip-AT-squashfs.org.uk>, Matthew Wilcox <willy-AT-infradead.org>, Xiongwei Song <Xiongwei.Song-AT-windriver.com> |
| Subject: |
| [PATCH 0/2] Implement readahead for squashfs |
| Date: |
| Mon, 16 May 2022 18:50:59 +0800 |
| Message-ID: |
| <20220516105100.1412740-1-hsinyi@chromium.org> |
| Cc: |
| Zheng Liang <zhengliang6-AT-huawei.com>, Zhang Yi <yi.zhang-AT-huawei.com>, Hou Tao <houtao1-AT-huawei.com>, Miao Xie <miaoxie-AT-huawei.com>, Andrew Morton <akpm-AT-linux-foundation.org>, "linux-mm @ kvack . org" <linux-mm-AT-kvack.org>, "squashfs-devel @ lists . sourceforge . net" <squashfs-devel-AT-lists.sourceforge.net>, linux-kernel-AT-vger.kernel.org |
| Archive-link: |
| Article |
Commit c1f6925e1091("mm: put readahead pages in cache earlier") requires
fs to implement readahead callback. Otherwise there will be a
performance regression.
Commit 9eec1d897139("squashfs: provide backing_dev_info in order to
disable read-ahead") mitigates the performance drop issue for squashfs
by closing readahead for it.
This series implements readahead callback for squashfs. The previous
discussion are in [1] and [2].
[1] https://lore.kernel.org/all/CAJMQK-g9G6KQmH-V=BRGX0swZji9...
[2] https://lore.kernel.org/linux-mm/Yn5Yij9pRPCzDozt@casper....
Hsin-Yi Wang (2):
Revert "squashfs: provide backing_dev_info in order to disable
read-ahead"
squashfs: implement readahead
fs/squashfs/file.c | 77 +++++++++++++++++++++++++++++++++++++++++++++
fs/squashfs/super.c | 33 -------------------
2 files changed, 77 insertions(+), 33 deletions(-)
--
2.36.0.550.gb090851708-goog
