erofs: change to use asynchronous io for fscache readpage/readahead

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Use asynchronous io to read data from fscache may greatly improve IO
bandwidth for sequential buffered read scenario.

Change erofs_fscache_read_folios to erofs_fscache_read_folios_async,
and read data from fscache asynchronously.
Make .readpage()/.readahead() to use this new helper.

Signed-off-by: Xin Yin <yinxin.x@bytedance.com>
Reviewed-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220509074028.74954-23-jefflexu@linux.alibaba.com
Acked-by: Chao Yu <chao@kernel.org>
[ Gao Xiang: minor styling changes. ]
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>

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Xin Yin 2022-05-09 15:40:28 +08:00 • committed by Gao Xiang

parent 9c0cc9c729

commit d435d53228

1 changed files with 201 additions and 43 deletions

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fs/erofs/fscache.c

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