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Short circuiting data_unlock in ext2fs

From: Sergio Lopez
Subject: Short circuiting data_unlock in ext2fs
Date: Tue, 11 May 2010 19:19:01 +0200


I think short circuiting data_unlock requests in ext2fs (by allocating
the page in file_pager_read_page and returning it unlocked) could
improve file growing performance a bit.

I've tested it in qemu (with kvm), using "dd" to sequentially write
blocks to a file, obtaining an improvement of 10%. I'd like to test it
in real hardware, but currently I don't have a spare machine to do
that. If someone can try it (it's a small patch, and it just requires
to rebuild ext2fs), please let us know the results.


Attachment: ext2fs_sc_unlock.diff
Description: Text Data

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