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authorJoakim Tjernlund <Joakim.Tjernlund@transmode.se>2010-01-08 14:42:40 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-01-11 09:34:04 -0800
commitac4c2a3bbe5db5fc570b1d0ee1e474db7cb22585 (patch)
treea7b8f2d618497cd4152ebe8e7390107a442bf0f6 /init/Kconfig
parent129182e5626972ac0df85d43a36dd46ad61c64e1 (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>
Diffstat (limited to 'init/Kconfig')
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