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authorSergey Senozhatsky <sergey.senozhatsky@gmail.com>2013-06-22 17:21:00 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-08-14 22:59:09 -0700
commit94bcc7deb8fed472360ad72ef3717c5409057fca (patch)
treeed4bb7c935f074637e264a2fc4f518a07ad56082
parentd1e8adc0865d7091f3c437d984a8527259b80378 (diff)
downloadvexpress-lsk-94bcc7deb8fed472360ad72ef3717c5409057fca.tar.gz
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> Cc: Thomas Backlund <tmb@mageia.org> Cc: Minchan Kim <minchan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/staging/zram/zram_drv.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c
index 1742ce55b4a..a333d44d0cf 100644
--- a/drivers/staging/zram/zram_drv.c
+++ b/drivers/staging/zram/zram_drv.c
@@ -432,7 +432,7 @@ static inline int valid_io_request(struct zram *zram, struct bio *bio)
end = start + (bio->bi_size >> SECTOR_SHIFT);
bound = zram->disksize >> SECTOR_SHIFT;
/* out of range range */
- if (unlikely(start >= bound || end >= bound || start > end))
+ if (unlikely(start >= bound || end > bound || start > end))
return 0;
/* I/O request is valid */