diff options
Diffstat (limited to 'drivers/md/multipath.c')
| -rw-r--r-- | drivers/md/multipath.c | 29 |
1 files changed, 13 insertions, 16 deletions
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c index 145cdc5ad0080..96f7af4ae400a 100644 --- a/drivers/md/multipath.c +++ b/drivers/md/multipath.c @@ -35,15 +35,10 @@ #define NR_RESERVED_BUFS 32 -static mdk_personality_t multipath_personality; - - static void *mp_pool_alloc(gfp_t gfp_flags, void *data) { struct multipath_bh *mpb; - mpb = kmalloc(sizeof(*mpb), gfp_flags); - if (mpb) - memset(mpb, 0, sizeof(*mpb)); + mpb = kzalloc(sizeof(*mpb), gfp_flags); return mpb; } @@ -308,6 +303,7 @@ static void print_multipath_conf (multipath_conf_t *conf) static int multipath_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) { multipath_conf_t *conf = mddev->private; + struct request_queue *q; int found = 0; int path; struct multipath_info *p; @@ -316,8 +312,8 @@ static int multipath_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) for (path=0; path<mddev->raid_disks; path++) if ((p=conf->multipaths+path)->rdev == NULL) { - blk_queue_stack_limits(mddev->queue, - rdev->bdev->bd_disk->queue); + q = rdev->bdev->bd_disk->queue; + blk_queue_stack_limits(mddev->queue, q); /* as we don't honour merge_bvec_fn, we must never risk * violating it, so limit ->max_sector to one PAGE, as @@ -325,7 +321,7 @@ static int multipath_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) * (Note: it is very unlikely that a device with * merge_bvec_fn will be involved in multipath.) */ - if (rdev->bdev->bd_disk->queue->merge_bvec_fn && + if (q->merge_bvec_fn && mddev->queue->max_sectors > (PAGE_SIZE>>9)) blk_queue_max_sectors(mddev->queue, PAGE_SIZE>>9); @@ -444,7 +440,7 @@ static int multipath_run (mddev_t *mddev) * should be freed in multipath_stop()] */ - conf = kmalloc(sizeof(multipath_conf_t), GFP_KERNEL); + conf = kzalloc(sizeof(multipath_conf_t), GFP_KERNEL); mddev->private = conf; if (!conf) { printk(KERN_ERR @@ -452,9 +448,8 @@ static int multipath_run (mddev_t *mddev) mdname(mddev)); goto out; } - memset(conf, 0, sizeof(*conf)); - conf->multipaths = kmalloc(sizeof(struct multipath_info)*mddev->raid_disks, + conf->multipaths = kzalloc(sizeof(struct multipath_info)*mddev->raid_disks, GFP_KERNEL); if (!conf->multipaths) { printk(KERN_ERR @@ -462,7 +457,6 @@ static int multipath_run (mddev_t *mddev) mdname(mddev)); goto out_free_conf; } - memset(conf->multipaths, 0, sizeof(struct multipath_info)*mddev->raid_disks); conf->working_disks = 0; ITERATE_RDEV(mddev,rdev,tmp) { @@ -557,9 +551,10 @@ static int multipath_stop (mddev_t *mddev) return 0; } -static mdk_personality_t multipath_personality= +static struct mdk_personality multipath_personality = { .name = "multipath", + .level = LEVEL_MULTIPATH, .owner = THIS_MODULE, .make_request = multipath_make_request, .run = multipath_run, @@ -572,15 +567,17 @@ static mdk_personality_t multipath_personality= static int __init multipath_init (void) { - return register_md_personality (MULTIPATH, &multipath_personality); + return register_md_personality (&multipath_personality); } static void __exit multipath_exit (void) { - unregister_md_personality (MULTIPATH); + unregister_md_personality (&multipath_personality); } module_init(multipath_init); module_exit(multipath_exit); MODULE_LICENSE("GPL"); MODULE_ALIAS("md-personality-7"); /* MULTIPATH */ +MODULE_ALIAS("md-multipath"); +MODULE_ALIAS("md-level--4"); |