diff options
Diffstat (limited to 'drivers/block/drbd/drbd_actlog.c')
| -rw-r--r-- | drivers/block/drbd/drbd_actlog.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_actlog.c b/drivers/block/drbd/drbd_actlog.c index cafa9c42fbdd..f9af555f9e69 100644 --- a/drivers/block/drbd/drbd_actlog.c +++ b/drivers/block/drbd/drbd_actlog.c @@ -840,6 +840,13 @@ static int update_sync_bits(struct drbd_device *device, return count; } +static bool plausible_request_size(int size) +{ + return size > 0 + && size <= DRBD_MAX_BATCH_BIO_SIZE + && IS_ALIGNED(size, 512); +} + /* clear the bit corresponding to the piece of storage in question: * size byte of data starting from sector. Only clear a bits of the affected * one ore more _aligned_ BM_BLOCK_SIZE blocks. @@ -859,7 +866,7 @@ int __drbd_change_sync(struct drbd_device *device, sector_t sector, int size, if ((mode == SET_OUT_OF_SYNC) && size == 0) return 0; - if (size <= 0 || !IS_ALIGNED(size, 512) || size > DRBD_MAX_DISCARD_SIZE) { + if (!plausible_request_size(size)) { drbd_err(device, "%s: sector=%llus size=%d nonsense!\n", drbd_change_sync_fname[mode], (unsigned long long)sector, size); |