From: Sergey Senozhatsky Date: Sat, 22 Jun 2013 14:21:00 +0000 (+0300) Subject: zram: allow request end to coincide with disksize X-Git-Tag: v3.11-rc1~158^2~16 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=75c7caf5a052ffd8db3312fa7864ee2d142890c4;p=linux.git 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 Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c index 753877431b5f..82c7202fd5cc 100644 --- a/drivers/staging/zram/zram_drv.c +++ b/drivers/staging/zram/zram_drv.c @@ -180,7 +180,7 @@ 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 */