drbd: silence underflow warning in read_in_block()

My static checker warns that "data_size" could be negative and underflow
the limit check.  The code looks suspicious but I don't know if it is a
real bug.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Dan Carpenter 2014-05-06 14:28:32 +03:00 committed by Philipp Reisner
parent 1e39152fea
commit bf0d6e4a11
2 changed files with 2 additions and 2 deletions

View file

@ -1592,7 +1592,7 @@ read_in_block(struct drbd_peer_device *peer_device, u64 id, sector_t sector,
struct drbd_peer_request *peer_req;
struct page *page;
int dgs, ds, err;
int data_size = pi->size;
unsigned int data_size = pi->size;
void *dig_in = peer_device->connection->int_dig_in;
void *dig_vv = peer_device->connection->int_dig_vv;
unsigned long *data;

View file

@ -52,7 +52,7 @@
#endif
extern const char *drbd_buildtag(void);
#define REL_VERSION "8.4.3"
#define REL_VERSION "8.4.5"
#define API_VERSION 1
#define PRO_VERSION_MIN 86
#define PRO_VERSION_MAX 101