From: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Date: Sun, 24 May 2009 17:47:14 +0000 (+0900)
Subject: nilfs2: support contiguous lookup of blocks
X-Git-Tag: v2.6.31-rc1~333^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c3a7abf06ce719a51139e62a034590be99abbc2c;p=pandora-kernel.git

nilfs2: support contiguous lookup of blocks

Although get_block() callback function can return extent of contiguous
blocks with bh->b_size, nilfs_get_block() function did not support
this feature.

This adds contiguous lookup feature to the block mapping codes of
nilfs, and allows the nilfs_get_blocks() function to return the extent
information by applying the feature.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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