From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Date: Sat, 22 Jun 2013 14:21:00 +0000 (+0300)
Subject: zram: allow request end to coincide with disksize
X-Git-Tag: v3.2.53~60
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=498a727b33ee121e4b57428257a05f657674af46;p=pandora-kernel.git

zram: allow request end to coincide with disksize

commit 75c7caf5a052ffd8db3312fa7864ee2d142890c4 upstream.

Pass valid_io_request() checks if request end coincides with disksize
(end equals bound), only fail if we attempt to read beyond the bound.

mkfs.ext2 produces numerous errors:
[ 2164.632747] quiet_error: 1 callbacks suppressed
[ 2164.633260] Buffer I/O error on device zram0, logical block 153599
[ 2164.633265] lost page write due to I/O error on zram0

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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