diff options
| -rw-r--r-- | drivers/md/dm-log.c | 16 | ||||
| -rw-r--r-- | drivers/md/dm-raid1.c | 12 |
2 files changed, 14 insertions, 14 deletions
diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c index 691cb9c22b5..40ed70df673 100644 --- a/drivers/md/dm-log.c +++ b/drivers/md/dm-log.c @@ -360,6 +360,17 @@ static int read_header(struct log_c *log) return 0; } +static int _check_region_size(struct dm_target *ti, uint32_t region_size) +{ + if (region_size < 2 || region_size > ti->len) + return 0; + + if (!is_power_of_2(region_size)) + return 0; + + return 1; +} + /*---------------------------------------------------------------- * core log constructor/destructor * @@ -395,8 +406,9 @@ static int create_log_context(struct dm_dirty_log *log, struct dm_target *ti, } } - if (sscanf(argv[0], "%u", ®ion_size) != 1) { - DMWARN("invalid region size string"); + if (sscanf(argv[0], "%u", ®ion_size) != 1 || + !_check_region_size(ti, region_size)) { + DMWARN("invalid region size %s", argv[0]); return -EINVAL; } diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c index 250f401668d..4d6bc101962 100644 --- a/drivers/md/dm-raid1.c +++ b/drivers/md/dm-raid1.c @@ -808,12 +808,6 @@ static void free_context(struct mirror_set *ms, struct dm_target *ti, kfree(ms); } -static inline int _check_region_size(struct dm_target *ti, uint32_t size) -{ - return !(size % (PAGE_SIZE >> 9) || !is_power_of_2(size) || - size > ti->len); -} - static int get_mirror(struct mirror_set *ms, struct dm_target *ti, unsigned int mirror, char **argv) { @@ -872,12 +866,6 @@ static struct dm_dirty_log *create_dirty_log(struct dm_target *ti, return NULL; } - if (!_check_region_size(ti, dl->type->get_region_size(dl))) { - ti->error = "Invalid region size"; - dm_dirty_log_destroy(dl); - return NULL; - } - return dl; } |