ocfs2: remove handle argument to ocfs2_start_trans()

All callers either pass in NULL directly, or a local variable that is
already set to NULL.

The internals of ocfs2_start_trans() get a nice cleanup as a result.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

11 files changed, 30 insertions, 46 deletions

diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index f3dbd31a85a1..354817acf8b3 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -1158,7 +1158,7 @@ static int __ocfs2_flush_truncate_log(struct ocfs2_super *osb)
                 goto out_mutex;
         }
 
-        handle = ocfs2_start_trans(osb, NULL, OCFS2_TRUNCATE_LOG_UPDATE);
+        handle = ocfs2_start_trans(osb, OCFS2_TRUNCATE_LOG_UPDATE);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 mlog_errno(status);
@@ -1365,8 +1365,7 @@ int ocfs2_complete_truncate_log_recovery(struct ocfs2_super *osb,
                         }
                 }
 
-                handle = ocfs2_start_trans(osb, NULL,
-                                           OCFS2_TRUNCATE_LOG_UPDATE);
+                handle = ocfs2_start_trans(osb, OCFS2_TRUNCATE_LOG_UPDATE);
                 if (IS_ERR(handle)) {
                         status = PTR_ERR(handle);
                         mlog_errno(status);
@@ -1860,7 +1859,7 @@ start:
 
         credits = ocfs2_calc_tree_trunc_credits(osb->sb, clusters_to_del,
                                                 fe, el);
-        handle = ocfs2_start_trans(osb, NULL, credits);
+        handle = ocfs2_start_trans(osb, credits);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 handle = NULL;
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index c36939996946..fcdcdf6aa352 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -364,7 +364,7 @@ struct ocfs2_journal_handle *ocfs2_start_walk_page_trans(struct inode *inode,
         struct ocfs2_journal_handle *handle = NULL;
         int ret = 0;
 
-        handle = ocfs2_start_trans(osb, NULL, OCFS2_INODE_UPDATE_CREDITS);
+        handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
         if (!handle) {
                 ret = -ENOMEM;
                 mlog_errno(ret);
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index 2bda5f345216..036c891c1e17 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -442,7 +442,7 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb,
                 credits = OCFS2_SIMPLE_DIR_EXTEND_CREDITS;
         }
 
-        handle = ocfs2_start_trans(osb, NULL, credits);
+        handle = ocfs2_start_trans(osb, credits);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 handle = NULL;
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 9eb60f21968d..100754de16b8 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -165,8 +165,7 @@ static int ocfs2_simple_size_update(struct inode *inode,
         struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
         struct ocfs2_journal_handle *handle = NULL;
 
-        handle = ocfs2_start_trans(osb, NULL,
-                                   OCFS2_INODE_UPDATE_CREDITS);
+        handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
         if (handle == NULL) {
                 ret = -ENOMEM;
                 mlog_errno(ret);
@@ -196,7 +195,7 @@ static int ocfs2_orphan_for_truncate(struct ocfs2_super *osb,
         /* TODO: This needs to actually orphan the inode in this
          * transaction. */
 
-        handle = ocfs2_start_trans(osb, NULL, OCFS2_INODE_UPDATE_CREDITS);
+        handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 mlog_errno(status);
@@ -496,7 +495,7 @@ restart_all:
         drop_alloc_sem = 1;
 
         credits = ocfs2_calc_extend_credits(osb->sb, fe, clusters_to_add);
-        handle = ocfs2_start_trans(osb, NULL, credits);
+        handle = ocfs2_start_trans(osb, credits);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 handle = NULL;
@@ -832,7 +831,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
                 }
         }
 
-        handle = ocfs2_start_trans(osb, NULL, OCFS2_INODE_UPDATE_CREDITS);
+        handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 mlog_errno(status);
@@ -905,7 +904,7 @@ static int ocfs2_write_remove_suid(struct inode *inode)
         mlog_entry("(Inode %llu, mode 0%o)\n",
                    (unsigned long long)oi->ip_blkno, inode->i_mode);
 
-        handle = ocfs2_start_trans(osb, NULL, OCFS2_INODE_UPDATE_CREDITS);
+        handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
         if (handle == NULL) {
                 ret = -ENOMEM;
                 mlog_errno(ret);
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index 7708c63a3554..ac78877ba14d 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -524,7 +524,7 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
         if (!fe->i_clusters)
                 goto bail;
 
-        handle = ocfs2_start_trans(osb, handle, OCFS2_INODE_UPDATE_CREDITS);
+        handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 handle = NULL;
@@ -590,7 +590,7 @@ static int ocfs2_remove_inode(struct inode *inode,
                 goto bail;
         }
 
-        handle = ocfs2_start_trans(osb, NULL, OCFS2_DELETE_INODE_CREDITS);
+        handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 mlog_errno(status);
diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c
index e927758e8cd3..752735842b1d 100644
--- a/fs/ocfs2/ioctl.c
+++ b/fs/ocfs2/ioctl.c
@@ -67,7 +67,7 @@ static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
         if (!S_ISDIR(inode->i_mode))
                 flags &= ~OCFS2_DIRSYNC_FL;
 
-        handle = ocfs2_start_trans(osb, NULL, OCFS2_INODE_UPDATE_CREDITS);
+        handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 mlog_errno(status);
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index 81fb917475fd..6d9658b0c5db 100644
--- a/fs/ocfs2/journal.c
+++ b/fs/ocfs2/journal.c
@@ -129,20 +129,16 @@ static struct ocfs2_journal_handle *ocfs2_alloc_handle(struct ocfs2_super *osb)
  * you pass it a handle however, it may still return error, in which
  * case it has free'd the passed handle for you. */
 struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb,
-                                               struct ocfs2_journal_handle *handle,
                                                int max_buffs)
 {
         int ret;
         journal_t *journal = osb->journal->j_journal;
-
-        mlog_entry("(max_buffs = %d)\n", max_buffs);
+        struct ocfs2_journal_handle *handle;
 
         BUG_ON(!osb || !osb->journal->j_journal);
 
-        if (ocfs2_is_hard_readonly(osb)) {
-                ret = -EROFS;
-                goto done_free;
-        }
+        if (ocfs2_is_hard_readonly(osb))
+                return ERR_PTR(-EROFS);
 
         BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE);
         BUG_ON(max_buffs <= 0);
@@ -153,13 +149,11 @@ struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb,
                 BUG();
         }
 
-        if (!handle)
-                handle = ocfs2_alloc_handle(osb);
+        handle = ocfs2_alloc_handle(osb);
         if (!handle) {
                 ret = -ENOMEM;
-                mlog(ML_ERROR, "Failed to allocate memory for journal "
-                     "handle!\n");
-                goto done_free;
+                mlog_errno(ret);
+                return ERR_PTR(ret);
         }
 
         down_read(&osb->journal->j_trans_barrier);
@@ -168,6 +162,7 @@ struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb,
         handle->k_handle = journal_start(journal, max_buffs);
         if (IS_ERR(handle->k_handle)) {
                 up_read(&osb->journal->j_trans_barrier);
+                kfree(handle);
 
                 ret = PTR_ERR(handle->k_handle);
                 handle->k_handle = NULL;
@@ -177,20 +172,12 @@ struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb,
                         ocfs2_abort(osb->sb, "Detected aborted journal");
                         ret = -EROFS;
                 }
-                goto done_free;
+                return ERR_PTR(ret);
         }
 
         atomic_inc(&(osb->journal->j_num_trans));
 
-        mlog_exit_ptr(handle);
         return handle;
-
-done_free:
-        if (handle)
-                kfree(handle);
-
-        mlog_exit(ret);
-        return ERR_PTR(ret);
 }
 
 void ocfs2_commit_trans(struct ocfs2_super *osb,
diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h
index d96f61abd668..3c0d15c5e49c 100644
--- a/fs/ocfs2/journal.h
+++ b/fs/ocfs2/journal.h
@@ -216,7 +216,6 @@ static inline void ocfs2_checkpoint_inode(struct inode *inode)
  * perfectly legal to go through an entire transaction without having
  * dirtied any buffers. */
 struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb,
-                                               struct ocfs2_journal_handle *handle,
                                                int max_buffs);
 void                         ocfs2_commit_trans(struct ocfs2_super *osb,
                                                 struct ocfs2_journal_handle *handle);
diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
index 9dd208dc5d7a..2ae567a7042b 100644
--- a/fs/ocfs2/localalloc.c
+++ b/fs/ocfs2/localalloc.c
@@ -238,7 +238,7 @@ void ocfs2_shutdown_local_alloc(struct ocfs2_super *osb)
         }
 
         /* WINDOW_MOVE_CREDITS is a bit heavy... */
-        handle = ocfs2_start_trans(osb, NULL, OCFS2_WINDOW_MOVE_CREDITS);
+        handle = ocfs2_start_trans(osb, OCFS2_WINDOW_MOVE_CREDITS);
         if (IS_ERR(handle)) {
                 mlog_errno(PTR_ERR(handle));
                 handle = NULL;
@@ -405,7 +405,7 @@ int ocfs2_complete_local_alloc_recovery(struct ocfs2_super *osb,
                 goto out_mutex;
         }
 
-        handle = ocfs2_start_trans(osb, NULL, OCFS2_WINDOW_MOVE_CREDITS);
+        handle = ocfs2_start_trans(osb, OCFS2_WINDOW_MOVE_CREDITS);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 handle = NULL;
@@ -896,7 +896,7 @@ static int ocfs2_local_alloc_slide_window(struct ocfs2_super *osb,
                 goto bail;
         }
 
-        handle = ocfs2_start_trans(osb, NULL, OCFS2_WINDOW_MOVE_CREDITS);
+        handle = ocfs2_start_trans(osb, OCFS2_WINDOW_MOVE_CREDITS);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 handle = NULL;
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 9a56bfdf45c6..d63ab7be89a5 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -379,7 +379,7 @@ static int ocfs2_mknod(struct inode *dir,
                 }
         }
 
-        handle = ocfs2_start_trans(osb, NULL, OCFS2_MKNOD_CREDITS);
+        handle = ocfs2_start_trans(osb, OCFS2_MKNOD_CREDITS);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 handle = NULL;
@@ -696,7 +696,7 @@ static int ocfs2_link(struct dentry *old_dentry,
                 goto out_unlock_inode;
         }
 
-        handle = ocfs2_start_trans(osb, NULL, OCFS2_LINK_CREDITS);
+        handle = ocfs2_start_trans(osb, OCFS2_LINK_CREDITS);
         if (IS_ERR(handle)) {
                 err = PTR_ERR(handle);
                 handle = NULL;
@@ -886,7 +886,7 @@ static int ocfs2_unlink(struct inode *dir,
                 }
         }
 
-        handle = ocfs2_start_trans(osb, NULL, OCFS2_UNLINK_CREDITS);
+        handle = ocfs2_start_trans(osb, OCFS2_UNLINK_CREDITS);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 handle = NULL;
@@ -1284,7 +1284,7 @@ static int ocfs2_rename(struct inode *old_dir,
                 }
         }
 
-        handle = ocfs2_start_trans(osb, NULL, OCFS2_RENAME_CREDITS);
+        handle = ocfs2_start_trans(osb, OCFS2_RENAME_CREDITS);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 handle = NULL;
@@ -1652,7 +1652,7 @@ static int ocfs2_symlink(struct inode *dir,
                 }
         }
 
-        handle = ocfs2_start_trans(osb, NULL, credits);
+        handle = ocfs2_start_trans(osb, credits);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 handle = NULL;
diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c
index ea63a519167d..186d2c3d524d 100644
--- a/fs/ocfs2/suballoc.c
+++ b/fs/ocfs2/suballoc.c
@@ -302,7 +302,7 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
 
         credits = ocfs2_calc_group_alloc_credits(osb->sb,
                                                  le16_to_cpu(cl->cl_cpg));
-        handle = ocfs2_start_trans(osb, handle, credits);
+        handle = ocfs2_start_trans(osb, credits);
         if (IS_ERR(handle)) {
                 status = PTR_ERR(handle);
                 handle = NULL;