BUG_ON() Conversion in md/raid5.c

this changes if() BUG(); constructs to BUG_ON() which is
cleaner and can better optimized away

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>

1 files changed, 12 insertions, 22 deletions

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index dae740adaf65..31843604049c 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -73,10 +73,8 @@ static void print_raid5_conf (raid5_conf_t *conf);
 static void __release_stripe(raid5_conf_t *conf, struct stripe_head *sh)
 {
         if (atomic_dec_and_test(&sh->count)) {
-                if (!list_empty(&sh->lru))
-                        BUG();
-                if (atomic_read(&conf->active_stripes)==0)
-                        BUG();
+                BUG_ON(!list_empty(&sh->lru));
+                BUG_ON(atomic_read(&conf->active_stripes)==0);
                 if (test_bit(STRIPE_HANDLE, &sh->state)) {
                         if (test_bit(STRIPE_DELAYED, &sh->state))
                                 list_add_tail(&sh->lru, &conf->delayed_list);
@@ -184,10 +182,8 @@ static void init_stripe(struct stripe_head *sh, sector_t sector, int pd_idx, int
         raid5_conf_t *conf = sh->raid_conf;
         int i;
 
-        if (atomic_read(&sh->count) != 0)
-                BUG();
-        if (test_bit(STRIPE_HANDLE, &sh->state))
-                BUG();
+        BUG_ON(atomic_read(&sh->count) != 0);
+        BUG_ON(test_bit(STRIPE_HANDLE, &sh->state));
         
         CHECK_DEVLOCK();
         PRINTK("init_stripe called, stripe %llu\n", 
@@ -269,8 +265,7 @@ static struct stripe_head *get_active_stripe(raid5_conf_t *conf, sector_t sector
                                 init_stripe(sh, sector, pd_idx, disks);
                 } else {
                         if (atomic_read(&sh->count)) {
-                                if (!list_empty(&sh->lru))
-                                        BUG();
+                          BUG_ON(!list_empty(&sh->lru));
                         } else {
                                 if (!test_bit(STRIPE_HANDLE, &sh->state))
                                         atomic_inc(&conf->active_stripes);
@@ -465,8 +460,7 @@ static int drop_one_stripe(raid5_conf_t *conf)
         spin_unlock_irq(&conf->device_lock);
         if (!sh)
                 return 0;
-        if (atomic_read(&sh->count))
-                BUG();
+        BUG_ON(atomic_read(&sh->count));
         shrink_buffers(sh, conf->pool_size);
         kmem_cache_free(conf->slab_cache, sh);
         atomic_dec(&conf->active_stripes);
@@ -882,8 +876,7 @@ static void compute_parity(struct stripe_head *sh, int method)
         ptr[0] = page_address(sh->dev[pd_idx].page);
         switch(method) {
         case READ_MODIFY_WRITE:
-                if (!test_bit(R5_UPTODATE, &sh->dev[pd_idx].flags))
-                        BUG();
+                BUG_ON(!test_bit(R5_UPTODATE, &sh->dev[pd_idx].flags));
                 for (i=disks ; i-- ;) {
                         if (i==pd_idx)
                                 continue;
@@ -896,7 +889,7 @@ static void compute_parity(struct stripe_head *sh, int method)
                                 if (test_and_clear_bit(R5_Overlap, &sh->dev[i].flags))
                                         wake_up(&conf->wait_for_overlap);
 
-                                if (sh->dev[i].written) BUG();
+                                BUG_ON(sh->dev[i].written);
                                 sh->dev[i].written = chosen;
                                 check_xor();
                         }
@@ -912,7 +905,7 @@ static void compute_parity(struct stripe_head *sh, int method)
                                 if (test_and_clear_bit(R5_Overlap, &sh->dev[i].flags))
                                         wake_up(&conf->wait_for_overlap);
 
-                                if (sh->dev[i].written) BUG();
+                                BUG_ON(sh->dev[i].written);
                                 sh->dev[i].written = chosen;
                         }
                 break;
@@ -995,8 +988,7 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx, in
         if (*bip && (*bip)->bi_sector < bi->bi_sector + ((bi->bi_size)>>9))
                 goto overlap;
 
-        if (*bip && bi->bi_next && (*bip) != bi->bi_next)
-                BUG();
+        BUG_ON(*bip && bi->bi_next && (*bip) != bi->bi_next);
         if (*bip)
                 bi->bi_next = *bip;
         *bip = bi;
@@ -1430,8 +1422,7 @@ static void handle_stripe(struct stripe_head *sh)
                 set_bit(STRIPE_HANDLE, &sh->state);
                 if (failed == 0) {
                         char *pagea;
-                        if (uptodate != disks)
-                                BUG();
+                        BUG_ON(uptodate != disks);
                         compute_parity(sh, CHECK_PARITY);
                         uptodate--;
                         pagea = page_address(sh->dev[sh->pd_idx].page);
@@ -2096,8 +2087,7 @@ static void raid5d (mddev_t *mddev)
 
                 list_del_init(first);
                 atomic_inc(&sh->count);
-                if (atomic_read(&sh->count)!= 1)
-                        BUG();
+                BUG_ON(atomic_read(&sh->count)!= 1);
                 spin_unlock_irq(&conf->device_lock);
                 
                 handled++;