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List:       linux-kernel
Subject:    mmap beyond file end (2.4.0-test1 with Reiserfs 3.6.6)
From:       Bernd Paysan <bernd.paysan () gmx ! de>
Date:       2000-05-28 19:03:22
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Hi!

The recent changes to file mapping (at least private, that's what I
tested) seemed to change the behaviour of file-mapping beyond EOF. All
other Unix-like OS I know (including, but not limited to earlier Linuxes)
fill pages beyond the file end with zeroes, Linux 2.4.0-test1 and the last
few prepatches before report an "Address alignment exception" when one is
accessing pages beyond file end. I tried to find a way to patch this
misbehavoir away, but didn't succeed.

This happens both on Reiserfs partitions as on ext2 partitions, so it
doesn't seem to be a bug in Reiserfs.

Bernd Paysan
"If you want it done right, you have to do it yourself"
http://www.jwdt.com/~paysan/


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