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authorJoakim Tjernlund <Joakim.Tjernlund@transmode.se>2010-01-08 23:42:40 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2010-01-11 18:34:04 +0100
commitac4c2a3bbe5db5fc570b1d0ee1e474db7cb22585 (patch)
treea7b8f2d618497cd4152ebe8e7390107a442bf0f6 /lib/lzo
parentpercpu: avoid calling __pcpu_ptr_to_addr(NULL) (diff)
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zlib: optimize inffast when copying direct from output
JFFS2 uses lesser compression ratio and inflate always ends up in "copy direct from output" case. This patch tries to optimize the direct copy procedure. Uses get_unaligned() but only in one place. The copy loop just above this one can also use this optimization, but I havn't done so as I have not tested if it is a win there too. On my MPC8321 this is about 17% faster on my JFFS2 root FS than the original. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Cc: Roel Kluin <roel.kluin@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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