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| author | Sergey Senozhatsky <sergey.senozhatsky@gmail.com> | 2013-06-22 17:21:00 +0300 |
|---|---|---|
| committer | Luis Henriques <luis.henriques@canonical.com> | 2013-08-13 12:10:29 +0100 |
| commit | 00139e27673bfa23e73a3feed86921e5dee4ef68 (patch) | |
| tree | 85c0cfb7629b903a121b1a5bdcd0bc184dea1242 | |
| parent | 48cf7e8bdb6559da3cd5801f0b79426c0db1e546 (diff) | |
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>
Cc: Thomas Backlund <tmb@mageia.org>
[ luis: backported to 3.5: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
| -rw-r--r-- | drivers/staging/zram/zram_drv.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c index 1ae0610b8f4a..2e88a68badfd 100644 --- a/drivers/staging/zram/zram_drv.c +++ b/drivers/staging/zram/zram_drv.c @@ -545,7 +545,7 @@ 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 */ |