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authorPhillip Lougher <phillip@squashfs.org.uk>2013-11-18 03:59:12 +0100
committerPhillip Lougher <phillip@squashfs.org.uk>2013-11-20 04:59:01 +0100
commit846b730e99518a1c9945afcb2afbe4d08a02ed80 (patch)
treec70eb16cbec15e5bfa1db80c5f18e062673331a9 /fs/sysv
parentSquashfs: add multi-threaded decompression using percpu variable (diff)
downloadlinux-846b730e99518a1c9945afcb2afbe4d08a02ed80.tar.xz
linux-846b730e99518a1c9945afcb2afbe4d08a02ed80.zip
Squashfs: Generalise paging handling in the decompressors
Further generalise the decompressors by adding a page handler abstraction. This adds helpers to allow the decompressors to access and process the output buffers in an implementation independant manner. This allows different types of output buffer to be passed to the decompressors, with the implementation specific aspects handled at decompression time, but without the knowledge being held in the decompressor wrapper code. This will allow the decompressors to handle Squashfs cache buffers, and page cache pages. This patch adds the abstraction and an implementation for the caches. Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk> Reviewed-by: Minchan Kim <minchan@kernel.org>
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