BUG_ON conversion for fs/reiserfs

This patch converts several if () BUG(); construct to BUG_ON();
which occupies less space, uses unlikely and is safer when
BUG() is disabled. S_ISREG() has no side effects, so the
conversion is safe.

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

5 files changed, 26 insertions, 54 deletions

diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c
index 41f24369e47a..c093642fb983 100644
--- a/fs/reiserfs/file.c
+++ b/fs/reiserfs/file.c
@@ -38,8 +38,7 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp)
         int err;
         int jbegin_failure = 0;
 
-        if (!S_ISREG(inode->i_mode))
-                BUG();
+        BUG_ON(!S_ISREG(inode->i_mode));
 
         /* fast out for when nothing needs to be done */
         if ((atomic_read(&inode->i_count) > 1 ||
@@ -125,8 +124,7 @@ static int reiserfs_sync_file(struct file *p_s_filp,
         int n_err;
         int barrier_done;
 
-        if (!S_ISREG(p_s_inode->i_mode))
-                BUG();
+        BUG_ON(!S_ISREG(p_s_inode->i_mode));
         n_err = sync_mapping_buffers(p_s_inode->i_mapping);
         reiserfs_write_lock(p_s_inode->i_sb);
         barrier_done = reiserfs_commit_for_inode(p_s_inode);
diff --git a/fs/reiserfs/item_ops.c b/fs/reiserfs/item_ops.c
index 7a88adbceef6..b9b423b22a8b 100644
--- a/fs/reiserfs/item_ops.c
+++ b/fs/reiserfs/item_ops.c
@@ -75,8 +75,7 @@ static int sd_create_vi(struct virtual_node *vn,
 static int sd_check_left(struct virtual_item *vi, int free,
                          int start_skip, int end_skip)
 {
-        if (start_skip || end_skip)
-                BUG();
+        BUG_ON(start_skip || end_skip);
         return -1;
 }
 
@@ -87,8 +86,7 @@ static int sd_check_right(struct virtual_item *vi, int free)
 
 static int sd_part_size(struct virtual_item *vi, int first, int count)
 {
-        if (count)
-                BUG();
+        BUG_ON(count);
         return 0;
 }
 
@@ -476,8 +474,7 @@ static int direntry_create_vi(struct virtual_node *vn,
 
         vi->vi_index = TYPE_DIRENTRY;
 
-        if (!(vi->vi_ih) || !vi->vi_item)
-                BUG();
+        BUG_ON(!(vi->vi_ih) || !vi->vi_item);
 
         dir_u->flags = 0;
         if (le_ih_k_offset(vi->vi_ih) == DOT_OFFSET)
@@ -575,8 +572,7 @@ static int direntry_check_right(struct virtual_item *vi, int free)
                 free -= dir_u->entry_sizes[i];
                 entries++;
         }
-        if (entries == dir_u->entry_count)
-                BUG();
+        BUG_ON(entries == dir_u->entry_count);
 
         /* "." and ".." can not be separated from each other */
         if ((dir_u->flags & DIRENTRY_VI_FIRST_DIRENTRY_ITEM)
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index e6b5ccf23f15..ad8cbc49883a 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -718,8 +718,7 @@ static int add_to_chunk(struct buffer_chunk *chunk, struct buffer_head *bh,
                         spinlock_t * lock, void (fn) (struct buffer_chunk *))
 {
         int ret = 0;
-        if (chunk->nr >= CHUNK_SIZE)
-                BUG();
+        BUG_ON(chunk->nr >= CHUNK_SIZE);
         chunk->bh[chunk->nr++] = bh;
         if (chunk->nr >= CHUNK_SIZE) {
                 ret = 1;
@@ -788,8 +787,7 @@ static inline int __add_jh(struct reiserfs_journal *j, struct buffer_head *bh,
                 /* buffer must be locked for __add_jh, should be able to have
                  * two adds at the same time
                  */
-                if (bh->b_private)
-                        BUG();
+                BUG_ON(bh->b_private);
                 jh->bh = bh;
                 bh->b_private = jh;
         }
@@ -2967,8 +2965,7 @@ static int do_journal_begin_r(struct reiserfs_transaction_handle *th,
         int retval;
 
         reiserfs_check_lock_depth(p_s_sb, "journal_begin");
-        if (nblocks > journal->j_trans_max)
-                BUG();
+        BUG_ON(nblocks > journal->j_trans_max);
 
         PROC_INFO_INC(p_s_sb, journal.journal_being);
         /* set here for journal_join */
@@ -3084,9 +3081,8 @@ struct reiserfs_transaction_handle *reiserfs_persistent_transaction(struct
         if (reiserfs_transaction_running(s)) {
                 th = current->journal_info;
                 th->t_refcount++;
-                if (th->t_refcount < 2) {
-                        BUG();
-                }
+                BUG_ON(th->t_refcount < 2);
+                
                 return th;
         }
         th = kmalloc(sizeof(struct reiserfs_transaction_handle), GFP_NOFS);
@@ -3126,9 +3122,7 @@ static int journal_join(struct reiserfs_transaction_handle *th,
          ** pointer
          */
         th->t_handle_save = cur_th;
-        if (cur_th && cur_th->t_refcount > 1) {
-                BUG();
-        }
+        BUG_ON(cur_th && cur_th->t_refcount > 1);
         return do_journal_begin_r(th, p_s_sb, nblocks, JBEGIN_JOIN);
 }
 
@@ -3141,9 +3135,7 @@ int journal_join_abort(struct reiserfs_transaction_handle *th,
          ** pointer
          */
         th->t_handle_save = cur_th;
-        if (cur_th && cur_th->t_refcount > 1) {
-                BUG();
-        }
+        BUG_ON(cur_th && cur_th->t_refcount > 1);
         return do_journal_begin_r(th, p_s_sb, nblocks, JBEGIN_ABORT);
 }
 
@@ -3178,8 +3170,7 @@ int journal_begin(struct reiserfs_transaction_handle *th,
                 current->journal_info = th;
         }
         ret = do_journal_begin_r(th, p_s_sb, nblocks, JBEGIN_REG);
-        if (current->journal_info != th)
-                BUG();
+        BUG_ON(current->journal_info != th);
 
         /* I guess this boils down to being the reciprocal of clm-2100 above.
          * If do_journal_begin_r fails, we need to put it back, since journal_end
@@ -3324,8 +3315,7 @@ int journal_end(struct reiserfs_transaction_handle *th,
                 /* we aren't allowed to close a nested transaction on a different
                  ** filesystem from the one in the task struct
                  */
-                if (cur_th->t_super != th->t_super)
-                        BUG();
+                BUG_ON(cur_th->t_super != th->t_super);
 
                 if (th != cur_th) {
                         memcpy(current->journal_info, th, sizeof(*th));
@@ -3444,9 +3434,7 @@ int journal_end_sync(struct reiserfs_transaction_handle *th,
 
         BUG_ON(!th->t_trans_id);
         /* you can sync while nested, very, very bad */
-        if (th->t_refcount > 1) {
-                BUG();
-        }
+        BUG_ON(th->t_refcount > 1);
         if (journal->j_len == 0) {
                 reiserfs_prepare_for_journal(p_s_sb, SB_BUFFER_WITH_SB(p_s_sb),
                                              1);
@@ -3556,9 +3544,8 @@ static int check_journal_end(struct reiserfs_transaction_handle *th,
          ** will be dealt with by next transaction that actually writes something, but should be taken
          ** care of in this trans
          */
-        if (journal->j_len == 0) {
-                BUG();
-        }
+        BUG_ON(journal->j_len == 0);
+
         /* if wcount > 0, and we are called to with flush or commit_now,
          ** we wait on j_join_wait.  We will wake up when the last writer has
          ** finished the transaction, and started it on its way to the disk.
@@ -3592,9 +3579,8 @@ static int check_journal_end(struct reiserfs_transaction_handle *th,
                                         unlock_journal(p_s_sb);
                                 }
                         }
-                        if (journal->j_trans_id == trans_id) {
-                                BUG();
-                        }
+                        BUG_ON(journal->j_trans_id == trans_id);
+                        
                         if (commit_now
                             && journal_list_still_alive(p_s_sb, trans_id)
                             && wait_on_commit) {
@@ -4074,9 +4060,7 @@ static int do_journal_end(struct reiserfs_transaction_handle *th,
         set_commit_trans_len(commit, journal->j_len);
 
         /* special check in case all buffers in the journal were marked for not logging */
-        if (journal->j_len == 0) {
-                BUG();
-        }
+        BUG_ON(journal->j_len == 0);
 
         /* we're about to dirty all the log blocks, mark the description block
          * dirty now too.  Don't mark the commit block dirty until all the
@@ -4173,8 +4157,7 @@ static int do_journal_end(struct reiserfs_transaction_handle *th,
                                       journal, jl, &jl->j_tail_bh_list);
                 lock_kernel();
         }
-        if (!list_empty(&jl->j_tail_bh_list))
-                BUG();
+        BUG_ON(!list_empty(&jl->j_tail_bh_list));
         up(&jl->j_commit_lock);
 
         /* honor the flush wishes from the caller, simple commits can
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
index 16e9cff8f15d..abde1edc2235 100644
--- a/fs/reiserfs/namei.c
+++ b/fs/reiserfs/namei.c
@@ -67,8 +67,7 @@ inline void set_de_name_and_namelen(struct reiserfs_dir_entry *de)
 {
         struct reiserfs_de_head *deh = de->de_deh + de->de_entry_num;
 
-        if (de->de_entry_num >= ih_entry_count(de->de_ih))
-                BUG();
+        BUG_ON(de->de_entry_num >= ih_entry_count(de->de_ih));
 
         de->de_entrylen = entry_length(de->de_bh, de->de_ih, de->de_entry_num);
         de->de_namelen = de->de_entrylen - (de_with_sd(deh) ? SD_SIZE : 0);
@@ -80,8 +79,7 @@ inline void set_de_name_and_namelen(struct reiserfs_dir_entry *de)
 // what entry points to
 static inline void set_de_object_key(struct reiserfs_dir_entry *de)
 {
-        if (de->de_entry_num >= ih_entry_count(de->de_ih))
-                BUG();
+        BUG_ON(de->de_entry_num >= ih_entry_count(de->de_ih));
         de->de_dir_id = deh_dir_id(&(de->de_deh[de->de_entry_num]));
         de->de_objectid = deh_objectid(&(de->de_deh[de->de_entry_num]));
 }
@@ -90,8 +88,7 @@ static inline void store_de_entry_key(struct reiserfs_dir_entry *de)
 {
         struct reiserfs_de_head *deh = de->de_deh + de->de_entry_num;
 
-        if (de->de_entry_num >= ih_entry_count(de->de_ih))
-                BUG();
+        BUG_ON(de->de_entry_num >= ih_entry_count(de->de_ih));
 
         /* store key of the found entry */
         de->de_entry_key.version = KEY_FORMAT_3_5;
diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c
index 8b9b13127136..5240abe1a709 100644
--- a/fs/reiserfs/stree.c
+++ b/fs/reiserfs/stree.c
@@ -1476,9 +1476,7 @@ static int maybe_indirect_to_direct(struct reiserfs_transaction_handle *th,
         int n_block_size = p_s_sb->s_blocksize;
         int cut_bytes;
         BUG_ON(!th->t_trans_id);
-
-        if (n_new_file_size != p_s_inode->i_size)
-                BUG();
+        BUG_ON(n_new_file_size != p_s_inode->i_size);
 
         /* the page being sent in could be NULL if there was an i/o error
          ** reading in the last block.  The user will hit problems trying to