zram: allow request end to coincide with disksize
authorSergey Senozhatsky <sergey.senozhatsky@gmail.com>
Sat, 22 Jun 2013 14:21:00 +0000 (17:21 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 24 Jun 2013 23:08:32 +0000 (16:08 -0700)
commit75c7caf5a052ffd8db3312fa7864ee2d142890c4
tree88d8e7f6f2c0bbc40c44e22924c6287e017d72f9
parent37f85b266476ceac7c0d6e71c27451386a4451e7
zram: allow request end to coincide with disksize

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>
drivers/staging/zram/zram_drv.c