Jaegeuk Kim 5463e7c18e Revert "f2fs: enhance multi-threads performance" ...

This reports performance regression by Yuanhan Liu.
The basic idea was to reduce one-point mutex, but it turns out this causes
another contention like context swithes.

https://lkml.org/lkml/2015/4/21/11

Until finishing the analysis on this issue, I'd like to revert this for a while.

This reverts commit 78373b7319.

2015-05-04 14:15:15 -07:00

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