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H A D | file.c | 8fc78b6f Fri Jun 17 03:38:13 CDT 2022 Hsin-Yi Wang <hsinyi@chromium.org> squashfs: implement readahead
Implement readahead callback for squashfs. It will read datablocks which cover pages in readahead request. For a few cases it will not mark page as uptodate, including:
- file end is 0. - zero filled blocks. - current batch of pages isn't in the same datablock. - decompressor error.
Otherwise pages will be marked as uptodate. The unhandled pages will be updated by readpage later.
Link: https://lkml.kernel.org/r/20220617083810.337573-4-hsinyi@chromium.org Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org> Suggested-by: Matthew Wilcox <willy@infradead.org> Reported-by: Matthew Wilcox <willy@infradead.org> Reported-by: Phillip Lougher <phillip@squashfs.org.uk> Reported-by: Xiongwei Song <Xiongwei.Song@windriver.com> Reported-by: Andrew Morton <akpm@linux-foundation.org> Cc: Hou Tao <houtao1@huawei.com> Cc: kernel test robot <lkp@intel.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Miao Xie <miaoxie@huawei.com> Cc: Zhang Yi <yi.zhang@huawei.com> Cc: Zheng Liang <zhengliang6@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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