qnx4: new helper - try_extent()
authorAl Viro <viro@zeniv.linux.org.uk>
Tue, 14 Feb 2012 22:48:20 +0000 (17:48 -0500)
committerAl Viro <viro@zeniv.linux.org.uk>
Wed, 21 Mar 2012 01:29:52 +0000 (21:29 -0400)
checking if an extent is the one we are looking for is done twice
in qnx4_block_map(); gather that code into a helper function.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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