From: Chao Yu <chao@kernel.org>
To: Gao Xiang <xiang@kernel.org>,
linux-erofs@lists.ozlabs.org, LKML <linux-kernel@vger.kernel.org>
Cc: Lasse Collin <lasse.collin@tukaani.org>,
Andrew Morton <akpm@linux-foundation.org>,
Greg KH <gregkh@linuxfoundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Gao Xiang <hsiangkao@linux.alibaba.com>
Subject: Re: [PATCH 7/7] erofs: lzma compression support
Date: Tue, 19 Oct 2021 21:04:09 +0800 [thread overview]
Message-ID: <e920e58d-d003-32cb-2910-64eea15beb58@kernel.org> (raw)
In-Reply-To: <20211010213145.17462-8-xiang@kernel.org>
On 2021/10/11 5:31, Gao Xiang wrote:
> From: Gao Xiang <hsiangkao@linux.alibaba.com>
>
> Add MicroLZMA support in order to maximize compression ratios for
> specific scenarios. For example, it's useful for low-end embedded
> boards and as a secondary algorithm in a file for specific access
> patterns.
>
> MicroLZMA is a new container format for raw LZMA1, which was created
> by Lasse Collin aiming to minimize old LZMA headers and get rid of
> unnecessary EOPM (end of payload marker) as well as to enable
> fixed-sized output compression, especially for 4KiB pclusters.
>
> Similar to LZ4, inplace I/O approach is used to minimize runtime
> memory footprint when dealing with I/O. Overlapped decompression is
> handled with 1) bounced buffer for data under processing or 2) extra
> short-lived pages from the on-stack pagepool which will be shared in
> the same read request (128KiB for example).
>
> Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Acked-by: Chao Yu <chao@kernel.org>
Thanks,
next prev parent reply other threads:[~2021-10-19 13:04 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-10 21:31 [PATCH 0/7] erofs: add LZMA compression support Gao Xiang
2021-10-10 21:31 ` [PATCH 1/7] lib/xz: Avoid overlapping memcpy() with invalid input with in-place decompression Gao Xiang
2021-10-10 21:31 ` [PATCH 2/7] lib/xz: Validate the value before assigning it to an enum variable Gao Xiang
2021-10-10 21:31 ` [PATCH 3/7] lib/xz: Move s->lzma.len = 0 initialization to lzma_reset() Gao Xiang
2021-10-10 21:31 ` [PATCH 4/7] lib/xz: Add MicroLZMA decoder Gao Xiang
2021-10-10 21:31 ` [PATCH 5/7] lib/xz, lib/decompress_unxz.c: Fix spelling in comments Gao Xiang
2021-10-10 21:31 ` [PATCH 6/7] erofs: rename some generic methods in decompressor Gao Xiang
2021-10-19 13:03 ` Chao Yu
2021-10-10 21:31 ` [PATCH 7/7] erofs: lzma compression support Gao Xiang
2021-10-19 13:04 ` Chao Yu [this message]
2021-10-14 1:45 ` [PATCH 0/7] erofs: add LZMA " Gao Xiang
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